Consulta: subjectFacets:"Pesticides"
Registros recuperados: 154
Data/hora: 09/06/2024 06:14:43

Evaluación de insecticidas para el control del psílido asiático de los cítricos (Diaphorina citri) Kuwayama (Hemíptera: Liviidae) en sus diferentes estados biológicos, en limón persa.
Provedor de dados: 32
Autores: Ruíz Galván, Isabel.
Se evaluaron seis formulaciones comerciales de insecticidas para el control de los diferentes estados biológicos de Diaphorina citri (Kuwayama) en limón persa en condiciones de invernadero y en laboratorio. Los insecticidas estudiados fueron Imidacloprid + Betacyflutrin, Spirotetramat, Imidacloprid, Thiametoxam + Lambda cyalotrina, Imidacloprid + Lambda cyalotrina, Aceite parafínico de petróleo y un testigo sin aplicación. Se utilizaron especímenes de una cria de D. citri establecida en enero de 2012 sobre plantas de limón persa con más de un año de no tener aplicaciones de insecticidas. Los parámetros evaluados fueron toxicidad de los insecticidas en huevecillos, ninfas y adultos. Los ensayos se dispusieron en un diseño completamente al azar, con 10...
Palavras-chave: Huevecillo; Ninfa; Adulto; Aceite parafínico de petróleo; Imidacloprid; Pesticides; Nymphs; Adult; Paraffinic oil; Entomología y Acarología; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2154

Calidad sanitaria en la producción de nopal verdura (Opuntia sp.) en Otumba, México.
Provedor de dados: 32
Autores: Martínez Martínez, Talina Olivia.
La calidad sanitaria en los productos hortofrutícolas debe considerarse una prioridad en la producción de alimentos. Actualmente en México, existe una gran preocupación por las asociaciones de productores y gobierno federal para adoptar sistemas de producción que reduzcan riesgos de contaminación (SRRC). Para la implementación de estos sistemas, es necesario cumplir con una serie de requisitos, entre ellos se encuentra la validación de procesos. Un método inmediato para efectuar este requerimiento, es la evaluación de la calidad sanitaria desde el punto de vista microbiológico y toxicológico, lo que hace necesario determinar un plan de muestreo y las técnicas apropiadas para la detección y cuantificación de patógenos indicadores. Con este propósito, en...
Palavras-chave: Salmonella; Escherichia coli; Pesticides; Phenolic compounds; Survival; Sample size; Entomología y Acarología; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/590

Toxicidad de cuatro insecticidas sobre Tamarixia triozae (Burks) (Hymenoptera: Eulophidae) y su hospedero Bactericera cockerelli (Sulc) (Hemíptera: Psyllidae).
Provedor de dados: 32
Autores: Luna Cruz, Alfonso.
Bactericera cockerelli es una de las plagas más importantes en solanáceas en México. Su manejo se basa en el uso de insecticidas y recientemente se ha explorado el uso del parasitoide Tamarixia triozae dentro de un programa de MIP. El objetivo del presente trabajo fue explorar la compatibilidad de insecticidas con este parasitoide. En este trabajo se evaluó, en condiciones de laboratorio (25±2ºC, 60±5% H.R.), la toxicidad de Azadiractina, Spinosad, Imidacloprid y Abamectina sobre T. triozae y B. cockerelli. Los cuatro insecticidas resultaron tóxicos tanto para el psílido como para el parasitoide, aunque el grado de toxicidad dependió de la especie, insecticida, estado biológico específico, dosis y forma en que los insectos se expusieron a los productos. De...
Palavras-chave: Psyllidae; Plaguicidas; Control biológico; Manejo integrado; Pesticides; Biological control; Pest management; Entomología y Acarología; Maestría.
Ano: 2010
URL: http://hdl.handle.net/10521/119

Toxicidad de insecticidas sobre Catolaccus hunteri Crawford (Hymenoptera: Pteromalidae) parasitoide de Anthonomus eugenii Cano (Coleoptera: Curculionidae).
Provedor de dados: 32
Autores: Murillo Hernández, Juan Eduardo.
Cuando no se puede evitar el uso de insecticidas es recomendable que la propuesta de manejo de sus plagas incluya el efecto de dichos insecticidas sobre los enemigos naturales (EN). En el presente estudio se evaluó el efecto de la residualidad y la toxicidad letal y subletal de los insecticidas beta-cyfluthrin, bifenazate, clorantraniliprol, flonicamid, spirotetramat y thiametoxam sobre Catolaccus hunteri, un ectoparasitoide del picudo del chile, Anthonomus eugenii. En las evaluaciones se empleó el método de contacto residual, se utilizaron discos foliares de plantas de chile como superficies de exposición. Se encontró diferencia significativa en la toxicidad letal, según la clasificación de la IOBC, thiametoxam resultó moderadamente nocivo (98% de...
Palavras-chave: Picudo del chile; Control biológico; Enemigos naturales; Plaguicidas; Efectos subletales; Pepper weevil; Biological control; Natural enemies; Pesticides; Sublethal effects; Entomología y Acarología; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2321

Toxicidad de cuatro insecticidas sobre Tamarixia triozae (Burks) (Hymenoptera: Eulophidae) y su hospedero Bactericera cockerelli (Sulc) (Hemíptera: Psyllidae).
Provedor de dados: 32
Autores: Luna Cruz, Alfonso.
Bactericera cockerelli es una de las plagas más importantes en solanáceas en México. Su manejo se basa en el uso de insecticidas y recientemente se ha explorado el uso del parasitoide Tamarixia triozae dentro de un programa de MIP. El objetivo del presente trabajo fue explorar la compatibilidad de insecticidas con este parasitoide. En este trabajo se evaluó, en condiciones de laboratorio (25±2ºC, 60±5% H.R.), la toxicidad de Azadiractina, Spinosad, Imidacloprid y Abamectina sobre T. triozae y B. cockerelli. Los cuatro insecticidas resultaron tóxicos tanto para el psílido como para el parasitoide, aunque el grado de toxicidad dependió de la especie, insecticida, estado biológico específico, dosis y forma en que los insectos se expusieron a los productos. De...
Palavras-chave: Psyllidae; Plaguicidas; Control biológico; Manejo integrado; Pesticides; Biological control; Pest management; Entomología y Acarología; Maestría.
Ano: 2010
URL: http://hdl.handle.net/10521/119

A conceptual framework to evaluate human-wildlife interactions within coupled human and natural systems
Provedor de dados: 7
Autores: Morzillo, Anita T.; University of Connecticut; anita.morzillo@uconn.edu; de Beurs, Kirsten M.; University of Oklahoma; kdebeurs@ou.edu; Martin-Mikle, Chelsea J.; University of Oklahoma; chelseajane.martin@gmail.com.
Landscape characteristics affect human-wildlife interactions.  However, there is a need to better understand mechanisms that drive those interactions, particularly feedbacks that exist between wildlife-related impacts, human reaction to and behavior as a result of those impacts, and how land use and landscape characteristics may influence those components within coupled human and natural systems.  Current conceptual models of human-wildlife interactions often focus on species population size as the independent variable driving those interactions.  Such an approach potentially overlooks important feedbacks among and drivers of human-wildlife interactions that result from mere wildlife presence versus absence.  We describe an emerging conceptual framework...
Tipo: Peer-Reviewed Reports
Palavras-chave: Coupled human and natural systems; Human-wildlife conflict; Human-wildlife interactions; Landscape ecology; Pesticides; Rodenticides; Wildlife management.
Ano: 2014

Challenges in Regulating Pesticide Mixtures
Provedor de dados: 7
Autores: Lydy, Michael; Southern Illinois University at Carbondale; mlydy@siu.edu; Belden, Jason; Southern Illinois University at Carbondale; jbelden@siu.edu; Wheelock, Craig; University of California at Davis; cewheelock@ucdavis.edu; Hammock, Bruce; University of California at Davis; bdhammock@ucdavis.edu; Denton, Debra; U.S. Environmental Protection Agency; Denton.Debra@epamail.epa.gov.
This paper introduces the field of mixture toxicity and the challenges in regulating pesticide mixtures. Even though pesticides are unique chemical stressors designed to have biological activity that can affect a number of nontarget species, they are intentionally placed into the environment in large quantities. Currently, methods and terminology for evaluating mixture toxicity are poorly established. The most common approach used is the assumption of additive concentration, with the concentrations adjusted for potency to a reference toxicant. Using this approach, the joint action of pesticides that have similar chemical structures and modes of toxic action can be predicted. However, this approach and other modeling techniques often provide little insight...
Tipo: Peer-Reviewed Reports
Palavras-chave: EPA; Additive toxicity; Concentration addition; Independent action; Mixtures; Pesticides; Regulations; Risk cup; Toxicity; Toxicity assessment.
Ano: 2004

USE OF REMOTELY PILOTED AIRCRAFTS FOR THE APPLICATION OF PLANT PROTECTION PRODUCTS
Provedor de dados: 70
Autores: Cunha,João P. A. R. da; Alvarenga,Cleyton B. de; Rinaldi,Paula C. N.; Marques,Matheus G.; Zampiroli,Renan.
ABSTRACT The use of remotely piloted aircrafts (RPAs) to apply plant protection products has grown a lot in agriculture worldwide. However, little research data are available regarding the efficiency and safety of this method, especially in Brazil. Thus, this review aimed to present the current scenario of scientific research involving RPAs in the application of pesticides. Several factors interfere with the quality of this type of application. Among them are height and flight speed, droplet generator elements, application rate, and spray solution properties. In general, applications have been performed between 1.0 m and 3.0 m of height and 1.0 m s-1 and 7.0 m s-1 of speed. As for the droplet generator element, there is still no clarity as to the ideal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Drones; Pesticides; Spraying.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000200245

KNOWLEDGE ON ADJUVANT PROPERTIES, DISPOSAL OF PESTICIDERESIDUES AND SPRAY DRIFT OCCURRENCE IN THE STATE OF MATO GROSSO
Provedor de dados: 70
Autores: CARVALHO,FERNANDO K.; ANTUNIASSI,ULISSES R.; MOTA,ALISSON A. B.; CHECHETTO,RODOLFO G.; CARVALHO,LÍDIA R. DE.
ABSTRACT This paper aimed at investigating the knowledge level of people working on pesticide spraying activities concerning spray adjuvant properties, as well as collecting information on disposal locations for residues from internal spray tank cleaning, and finally the understanding of pesticide spray drift occurrence in the state of Mato Grosso, Brazil. The information was gathered through a questionnaire answered by participants of a rural extension program in application technology located in nineteen grain and fiber producing regions of Mato Grosso state. Among the mentioned adjuvants, 49.0% belonged to the mineral oil class and 17.9% of participants did not know the functions performed by such products. In addition, 58.5% of the participants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Spraying; Environmental safety; Application technology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200352

BLADE ANGLE EFFECT ON DROPLET SIZE SPECTRUM OF ROTARY ATOMIZERS USED IN BRAZIL
Provedor de dados: 70
Autores: Carvalho,Fernando K.; Antuniassi,Ulisses R.; Chechetto,Rodolfo G.; Mota,Alisson A. B.; Kruger,Greg R.
ABSTRACT The effect of blade angle on droplet size spectrum of five rotary cage atomizers and one rotary disc atomizer used in Brazil was evaluated in a high speed wind tunnel, with an air speed of 180 km h−1. This study included the characterization of the droplet size spectrum, via laser diffraction instrument, generated by three blades angles, of 45, 60 and 75 degrees. The spray solution was composed of Picoxystrobin+ Cyproconazole fungicide (SC), at 20 mL c.p. L−1, and at a flow rate of 6 L min−1. As the angle decreased from 75 to 45 degrees, the rotational speed of the atomizers increased and the volume median diameter (VMD) decreased. However, increasing the rotational speed also increased the percentage of droplets smaller than 100 µm (% &lt; 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Atomization; Spray drift; Pesticides.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601118

Effect of working pressure at different spray nozzles on drift quantification in wind tunnel
Provedor de dados: 70
Autores: Gandolfo,Marco A.; Carvalho,Fernando K.; Chechetto,Rodolfo G.; Gandolfo,Ulisses D.; Moraes,Eder D. de.
Each year, there is an increase in pesticide consumption and in its importance of use in the large-scale agricultural production, being fundamental the knowledge of application technology to the activity success. The objective of the present study was to evaluate the influence of working pressure on the drift generated by different spray nozzles, assessed in wind tunnel. The treatments were composed of two spray nozzles AXI 110015 and AXI 11002 with pressure levels of 276 and 414 kPa. The spray solution was composed by water and NaCl at 10%. The applications were conducted at wind speed of 2.0 m s-1, being the drift collected at 5.0; 10.0 and 15.0 m away from the spray boom and at heights of 0.2; 0.4; 0.6; 0.8 e 1.0 m from the tunnel floor. To both spray...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Pesticides; Environmental contamination.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100008

Assessment of the genotoxic impact of pesticides on farming communities in the countryside of Santa Catarina State, Brazil
Provedor de dados: 74
Autores: Salvagni,Jaqueli; Ternus,Raquel Zeni; Fuentefria,Alexandre Meneghello.
The aim of this study was to assess the use of pesticides on farms located in the Lambedor River watershed in Guatambu, State of Santa Catarina, as well as to determine, by micronucleus testing, the risk of genotoxic impact. Samples from locally collected Cyprinus carpio, Hypostomus punctatus, Rhamdia quelen and Oreochromis niloticus gave evidence of a mean increase in micronuclei frequency from 6.21 to 13.78 in 1,000 erythrocytes, a clear indication of the genotoxic potenciality of pesticide residues in regional dams, and their significant contribution to local environmental contamination.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Environment; Micronucleus test.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000100021

Occupational exposure of workers to pesticides: Toxicogenetics and susceptibility gene polymorphisms
Provedor de dados: 74
Autores: Adad,Lúcia Maria de Miranda; Andrade,Heloísa Helena Rodrigues de; Kvitko,Kátia; Lehmann,Mauricio; Cavalcante,Ana Amélia de Carvalho Melo; Dihl,Rafael Rodrigues.
Farm workers are often exposed to pesticides, which are products belonging to a specific chemical group that affects the health of agricultural workers and is mostly recognized as genotoxic and carcinogenic. The exposure of workers from Piauí, Brazil, to these hazardous chemicals was assessed and cytogenetic alterations were evaluated using the buccal micronucleus assay, hematological and lipid parameters, butyrylcholinesterase (BChE) activity and genetic polymorphisms of enzymes involved in the metabolism of pesticides, such as PON1, as well as of the DNA repair system (OGG1, XRCC1 and XRCC4). Two groups of farm workers exposed to different types of pesticides were evaluated and compared to matched non-exposed control groups. A significant increase was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human monitoring; Buccal micronucleus test; Pesticides; PON 1; DNA repair genes.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300308

Esterase profile in a pyrethroid-resistant Brazilian strain of the cattle tick Boophilus microplus (Acari, Ixodidae)
Provedor de dados: 74
Autores: Baffi,Milla Alves; Pereira,Cícero Donizete; Souza,Guilherme Rocha Lino de; Bonetti,Ana Maria; Ceron,Carlos Roberto; Gourlart,Luiz Ricardo.
The cattle tick Boophilus microplus causes great damage in livestock and is considered one of the most important tropical ectoparasites. The traditional method of control is based on the intensive use of pesticides, however the indiscriminate use of these compounds over the years has led to the selection of resistant ticks. Hydrolases, particularly esterases (EST), have been reported to be associated with acaricide resistance in B. microplus. We compared the esterase profile of susceptible and cypermethrin-resistant strains of adult B. microplus and a pyrethroid susceptible reference strain (the Mozzo strain) using polyacrylamide gel electrophoresis and specific staining. The electrophoretic profiles of protein extracts revealed the presence of four...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Boophilus microplus; Pesticides; Resistance; Esterases.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000500016

Nova Metodologia para avaliar a deposição de micoinseticida granulado, aplicado via aérea, para controle de cigarrinhas-da-raiz da cana-de-açúcar.
Provedor de dados: 14
Autores: ALVES, R. T.; CRUVINEL, P. E.; SOARES, R. M.; MALAQUIAS, J. V.
O controle biológico é uma importante ferramenta para ser utilizada no manejo integrado de insetos-praga. A formulação granulada de fungo Metarhizium anisopliae ainda é uma das mais utilizadas em canaviais do Brasil, porém existe uma dúvida sobre quantos esporos do fungo chegam na base da planta de cana quando aplicados de avião. O objetivo deste estudo foi desenvolver metodologia para avaliar a deposição de micoinseticida granulado, aplicado via aérea, para controle de cigarrinhas-da-raiz da cana. Aplicou-se o fungo M. anisopliae na dose de 1,4 x 1013 conídios/ha, na forma granulada, por meio de avião agrícola com aplicador Swathmaster, na quantidade de 8 kg/ha, e dose de 1,8 x 1013 para 10 kg/ha. Cada parcela teve 48 placas de Petri para coleta dos...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Metarhizium anisoplieae.; Cana-de-açúcar; Praga de planta; Inseticida; Pesticida; Fungo; Controle biológico.; Sugarcane; Plant pests; Insecticides; Pesticides; Fungi; Biological control.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1059281

Panorama da contaminação ambiental por agrotóxicos e nitrato de origem agrícola no Brasil: cenário 1992/2011.
Provedor de dados: 14
Autores: GOMES, M. A. F.; BARIZON, R. R. M.
O objetivo deste trabalho foi identificar e avaliar o cenário de uso e presença de agrotóxicos e fertilizantes nitrogenados no Brasil, com destaque para o nitrato (N-NO3-), tendo como referência a legislação pertinente ao tema e à base de dados gerados pela comunidade científica nas últimas duas décadas. Com isso, espera- se obter um diagnóstico mais próximo da realidade sobre a presença e contaminação do solo e da água por estas substâncias, para que assim esse diagnóstico sirva de alerta, e principalmente, de apoio às iniciativas direcionadas ao controle e uso racional dessas substâncias.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Brasil; Meio ambiente; Poluição ambiental; Agrotóxico; Nitrato; Pollution; Environment; Pesticides; Agrochemicals; Nitrate fertilizers.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/987245

Princípios da determinação de íons em amostras ambientais por eletroforese capilar.
Provedor de dados: 14
Autores: MARCHI, G.; SILVA, C. A.; GUILHERME, L. R. G.; PIRES, A. M. M.; GUERREIRO, M. C.
ABSTRACT: This work presents theory and applications in capillary electrophoresis. This technique is a powerful tool representing a large saving in chemicals (0.5 to 4 nL s-1 flux), samples (1 to 100 nL), and method development time. In addition, this work pictures applications such as separation and determination of analytical compounds. Recent reviews were cited to provide essential information for users regarding data sources, pioneer works, and theoretical treatments. The technique is reliable to study air, soil, and water samples in order to be able to determine trace amounts of pollutants. Examples of trace elements, pesticides, and humic substances analyses were showed. Separation and determination of proteins, peptides, aminoacids, nucleic acids,...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Análise Química; Pesticida; Química do Solo.; Chemical composition; Pesticides; Soil chemistry.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/571969

Tecnologia da aplicação de agrotóxicos visando o controle de Rhopalosiphum padi (L., 1758) e Schizaphis graminum (R., 1852) no trigo, em Mato Grosso do Sul.
Provedor de dados: 14
Autores: SILVA, J. J. C. da; RUMIATTO, M.
bitstream/item/40084/1/COT-24.85.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Tecnologia de aplicacao; Brasil; Mato Grosso do Sul; Pests of plants.; Afídeo; Controle Químico; Defensivo; Cerrado; Praga de Planta; Rhopalosiphum Padi; Schizaphis Graminum; Trigo; Triticum Aestivum.; Aphidius; Brazil; Pesticides; Wheat.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/233377

Método analítico multirresíduo para determinação de inseticidas no Bicho-da-seda (Bombyx mori L).
Provedor de dados: 14
Autores: SCORZA JUNIOR, R. P.; PORTILHO, I. E. R.
Diante dos crescentes relatos de perdas de produção na sericicultura pela intoxicação e morte do bicho-da-seda por inseticidas aplicados em áreas adjacentes aos sericicultores, torna-se importante a realização de estudos de monitoramento para caracterizar a problemática como subsídio para ações futuras na proposição de soluções. No entanto, para trabalhos de monitoramento, é fundamental possuir um método analítico confiável e validado no laboratório para a matriz alvo. Este trabalho teve como objetivo o desenvolvimento e a validação de um método analítico multirresíduo para identificação e quantificação de 26 inseticidas e produtos de degradação em amostras de bicho-da-seda, utilizando o protocolo QuEChERS e cromatografia líquida de ultraperformance...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Monitoramento ambiental; QuEChERS; Agrotóxico; Sericicultura; Bicho da Seda; Bombyx Mori; Pesticides; Sericulture; Environmental monitoring.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136504

Áreas críticas nas porções de recarga do Aquífero Guarani localizadas nas nascentes do Rio Araguaia.
Provedor de dados: 14
Autores: GOMES, M. A. F.; FILIZOLA, H. F.; PAULA, M. M. de; DIOGO, A.; CERDEIRA, A. L.
O presente trabalho tem por objetivo apresentar os dados de reconhecimento e de seleção de áreas de recarga visualmente mais críticas do Aquífero Guarani, localizadas no município de Mineiros, GO, dentro da porção noroeste da Bacia Sedimentar do Paraná. Os locais selecionados serão objeto de estudo do projeto denominado "Uso agrícola das áreas de recarga do Aquífero Gurani e implicações na qualidade da água subterrânea", principalmente no que se refere à caracterização de áreas que oferecem maior risco de ocntaminação (potencial e efetivo) para a água subterrânea, à partir das atividades agrícolas, como também do projeto intitulado "Recuperação ambiental das nascentes do Rio Araguaia.
Tipo: Folhetos
Palavras-chave: Aquífero; Área de recarga; Agricultura; Impacto ambiental; Agrotóxico; Desmatamento; Erosão do solo; Agriculture; Environmental impact; Pesticides; Deforestation; Soil erosion.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/963895

Avaliação de perdas de pulverização em culturas de feijão e de tomate.
Provedor de dados: 14
Autores: CHAIM, A.; VALARINI, P. J.; OLIVEIRA, D. de A.; MORSOLETO, R. V.; PIO, L. C.
O objetivo deste trabalho foi avaliar a quantidade de agrotóxico perdida durante a pulverização da cultura de feijão e de tomate. Na de feijão, os testes foram realizados quando as plantas se apresentavam com 15, 35 e 60 cm de altura, enquanto, para o tomate, com 40 e 70 cm de altura. Em todos os testes, a deposição no topo das plantas foi maior do que a da região mediana e basal. As perdas para a cultura do feijão ficaram entre 49 e 88% do total do traçador aplicado e, as do tomate, entre 44 e 70%.
Tipo: Folhetos
Palavras-chave: Perdas; Deposição; Pulverização; Agrotóxico; Feijão; Tomate; Método de Aplicação; Spraying; Pesticides.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/13120

Manual de tecnologia de aplicação de agrotóxicos.
Provedor de dados: 14
Autores: CHAIM, A.
Este livro visa à maior eficiência na aplicação de agrotóxicos. Estruturado em seis capítulos, esta publicação aborda os principais fatores que afetam tanto a eficiência das aplicações quanto a regulagem de pulverizadores. Descreve ainda, de forma detalhada, a calibração da pulverização, numa abordagem simples e fácil entendimento.
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Pulverização; Agrotóxico; Método de aplicação; Tecnologia agrícola; Pulverizador; Manutenção.; Application technology.; Pesticides.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/663946

Resíduos de agrotóxicos em águas do Rio Dourados, Mato Grosso do Sul.
Provedor de dados: 14
Autores: SCORZA JUNIOR, R. P.; LANA, J. T. de O.; SILVA, G. B. S. da; LOEBMANN, D. G. dos S. W.; ALMEIDA, E. G. de.
Estudos de monitoramento dos resíduos de agrotóxicos em ? águas superficiais são necessários para avaliar os níveis de exposição de organismos não alvos, incluindo os seres humanos. Este trabalho teve como objetivo monitorar resíduos de 46 diferentes agrotóxicos e seus produtos de degradação em amostras de água do Rio Dourados, Mato Grosso do Sul. Amostras foram coletadas mensalmente ou quinzenalmente, em três pontos de amostragem, durante o período de dezembro de 2019 a dezembro de 2020. Para análise, utilizou-se um método multirresíduo, com extração em fase sólida (SPE) e separação e identificação com cromatografia líquida de ultraperformance acoplada à espectrometria de massas (UPLC-MS-MS). Os limites de quantificação (LQ) para os diferentes agrotóxicos...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Contaminação; Meio Ambiente Aquático; Águas Pluviais; Águas Superficiais; Pesticida; Recurso Hídrico; Aquatic environment; Pesticides; Water pollution; River water.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1130741

Bioensaios de toxicidade genética com Tradescantia.
Provedor de dados: 14
Autores: RODRIGUES, G. S.
Resumo: Dentre a variedade de bioensaios disponíveis para estudos de detecção e monitoração dos efeitos tóxicos genéticos de substâncias e ambientes contaminados, os bioensaios que empregam a planta Tradescantia destacam-se pela sensibilidade e facilidade de realização de estudos de curto prazo in situ. Este trabalho apresenta uma revisão extensiva dos estudos de mutagênese ambiental empregando Tradescantia como bioindicador, e é complementado com resultados experimentais e indicações metodológicas.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bioensaio; Toxidez; Mutação; Agrotóxico; Tradescantia; Bioassays; Mutagenesis; Genotoxicity; Pesticides.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1051547

Risco de contaminação das águas superficiais e subterrâneas por agrotóxicos em cultivos de cebola no Entorno do Lago de Sobradinho, estado da Bahia.
Provedor de dados: 14
Autores: SILVA, P. T. de S. e; MEDEIROS, L. R. de A.; CUNHA, T. J. F.; COSTA, N. D.; SALVIANO, A. M.
Com este trabalho, avaliou-se o risco de contaminação de águas superficiais e subterrâneas pelo uso de agrotóxicos aplicados em plantios de cebola dos munícipios de Casa Nova e Sento Sé, Bahia. Foram empregados o método de GOSS, para a avaliação das águas superficiais, e o índice GUS, para águas subterrâneas. Verificou-se o uso de 34 princípios ativos no cultivo de cebola nesses municípios. Destes, 62,9% foram classificados de extremamente a altamente tóxicos e mais de 70% classificados como muito perigosos para o meio ambiente. Dos agrotóxicos empregados, cerca de 80% apresentam de médio a alto potencial de contaminação, quando dissolvido em água. Quanto à água subterrânea, a maioria dos compostos apresenta baixa suscetibilidade à lixiviação, ficando...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Entorno do Lago de Sobradinho; Recursos hídricos; Contaminação ambiental; Índice GUS; Método de GOSS; Cebola; Agrotóxico; Resíduo Quimico; Lago Artificial; Água; Hortaliça de Bulbo; Allium Cepa; Pesticida; Onions; Pesticides.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1113099

Defensivos agrícolas como um fator ecológico.
Provedor de dados: 14
Autores: CASTRO, A. G. de.
Os defensivos agrícolas têm assumido uma importância cada vez maior no mantenimento de sistemas de produção agropecuários, seu uso consistindo em questão logicamente inegável. No entanto, dois fatores básicos merecem atenção imediata quando tratamos da utilização destes produtos: adequacidade das técnicas de uso e aplicação; complexidade estrutural/funcional do meio ambiente, principal receptor dos processos de distúrbios ocasionados pelos mesmos.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Defensivos agrícolas; Aspectos ecológicos; Agrotóxico; Defensivo; Ecologia; Meio ambiente; Pesticides.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/964266

Tecnologia da aplicação de agrotóxicos em trigo visando o controle de Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), em Mato Grosso do Sul.
Provedor de dados: 14
Autores: SILVA, J. J. C. da.
bitstream/item/39163/1/COT-19.85.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Tecnologia de aplicacao; Brasil; Mato Grosso do Sul; Pests of plants.; Controle Químico; Defensivo; Cerrado; Praga de Planta; Trigo; Spodoptera Frugiperda; Triticum Aestivum.; Brazil; Pesticides; Wheat.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/233378

Modelo PestLCI: parametrização para os cenários brasileiros de produção agrícola.
Provedor de dados: 14
Autores: BARIZON, R. R. M.; MATSUURA, M. I. da S. F.; SCACHETTI, M. T.; SILVA, G. B. S. da; COSTA, M. P.; GAROFALO; LANES, V. F. de; PICOLI, G.; PIGHINELLI, A. L. M. T.; MORANDI, M. A. B.
Resumo: Diversas metodologias têm sido utilizadas para avaliar os impactos dos pesticidas utilizados na agricultura. O PestLCI Consensus v.1.0, ferramenta apresentada neste trabalho, traz contribuições para a estimativa de emissões de pesticidas em processos agrícolas, para a elaboração de inventários para estudos de avaliação do ciclo de vida (ACV), de gestão ambiental, que tem sido aprimorada para incorporar os potenciais impactos desses compostos em sistemas de produção agropecuários. Além da apresentação do PestLCI, este trabalho objetiva também parametrizar cenários de produção agrícola relevantes para o Brasil. Com isso, espera-se o aprimoramento dos estudos de ACV que abordem os possíveis impactos dos pesticidas sobre a saúde humana e meio ambiente.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Avaliação do ciclo de vida; Agrotóxico; Pesticida; Impacto Ambiental; Águas Superficiais; Águas Subterrâneas; Solo; Ar; Pesticides; Environmental impact; Molecular dynamics; Groundwater; Surface water; Life cycle assessment; Air.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1134598

Contaminação potencial dos corpos hídricos por agrotóxicos em áreas de produção de uva.
Provedor de dados: 14
Autores: SILVA, P. T. de S. e; SILVA, G. de S.; AMORIM JÚNIOR, A. C.; ALBUQUERQUE JÚNIOR, E. C. de; CUNHA, T. J. F.; MOURA, M. S. B. de.
A videira (Vitis vinifera L.) é uma das mais importantes culturas da região do Submédio do Vale do São Francisco. Os insumos agrícolas utilizados para o seu desenvolvimento e controle fitossanitário podem acarretar risco de contaminação aos recursos hídricos. O objetivo deste trabalho foi avaliar o potencial de contaminação das águas superficiais e subterrâneas pelos agrotóxicos empregados na produção de uva, utilizando o Índice de GUS (Groundwater Ubiquity Score) e o método de Goss. Para isso, foi realizado um levantamento dos principais agrotóxicos utilizados na região estudada, por meio de questionários e foi verificado a sua classificação toxicológica e ambiental. Foi observado que mais de 50% dos agrotóxicos utilizados nas áreas de videira,...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Contaminação da água; Índice de GUS; Método de Goss; Videira; Vitivinicultura; Uva; Agrotóxico; Solo; Fertilidade do Solo; Resíduo Quimico; Vitis Vinifera; Grapes; Water resources; Pesticides.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1088285

Manejo de agrotóxico e qualidade ambiental:manual técnico.
Provedor de dados: 14
Autores: CHAIM, A.; FRIGHETTO, R. T. S.; VALARINI, P. J.
Este manual traz informações sobre cuidados no manuseio e uso de agrotóxicos, apresentando técnicas adequadas de aplicação, com vistas à redução de perdas e minimização da contaminação ambiental, humana e animal. Foi exclusivamente preparado para servir de guia nos treinamentos de técnicos em ciências agrárias, agricultores e aplicadores. Espera-se que os monitores possam multiplicar essas informações e, dessa forma, contribuir para a melhoria da qualidade ambiental.
Tipo: Folhetos
Palavras-chave: Calibração; Tríplice lavagem; Meio ambiental; Agrotóxico; Pulverização; Método de aplicação; Toxicologia; Descarte; Pesticides; Pesticide application; Toxicology; Environment.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/964433

Medidas para comparação entre requerimentos legais e práticos de campo no uso de produtos fitossanitários: indicadores DAC.
Provedor de dados: 14
Autores: OLIVEIRA, D. de A.; SILVA, A. de S.; SPADOTTO, C. A.
O uso de pesticidas no Brasil é regulamentado pelos ministérios da Agricultura e Abastecimento, da Saúde, e do Meio Ambiente. Este estudo propõe um modelo matemático para relacionar as prescrições legais e o uso real de pesticidas. O modelo permite deduzir índices e indicadores, desde o nível mais baixo de agregação (uso de um pesticida por pulverização no campo), até o nível mais alto (estudo dos produtores). Três índices são deduzidos para: a) o ingrediente ativo; b) pulverização; c)cultura. Dois indicadores são também deduzidos para a) cultura por produtor; e b) produtores. A informação numérica permite, então, comparar entre diferentes produtos agrícolas e diferentes produtores, usando os chamados indicadores DAC, que medem a conformidade do uso de...
Tipo: Folhetos
Palavras-chave: Indicador de qualidade; Qualidade de agua; Guaira; Monitoramento; Culturas agricolas; Produtor rural; Agrotóxico; Pulverização; Modelo matemático; Qualidade da água; Feijão; Milho; Soja; Tomate; Impacto Ambiental; Pesticides; Mathematical models.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/12997

Sistema plantio direto: o produtor pergunta, a Embrapa responde.
Provedor de dados: 14
Autores: SALTON, J. C.; HERNANI, L. C.; FONTES, C. Z.
Introdução; Conceitos, Adoção, Palha; Manejo do material orgânico; Culturas, sucessões e rotações; Água e temperatura no solo; Biologia do solo; Compactação do solo; Terraços; Correção do solo; Adubação; Coleta de amostras de solo e de planta; Mecanização; Tecnologia de aplicação de defensivos agrícolas; Plantas daninhas e seu controle; Manejo de pragas; Manejo de doenças; Integração agricultura-pecuária; Custos de produção; Agricultura de precisão.
Tipo: Col Criar Plantar ABC 500P/500R Saber (INFOTECA-E)
Palavras-chave: Adubação; Agricultura de Precisão; Biologia do Solo; Cerrado; Compactação do Solo; Custo de Produção; Doença de Planta; Matéria Orgânica; Mecanização Agrícola; Plantio Direto; Rotação de Cultura; Sistema de Cultivo; Tecnologia; Disease control; Fertilizer application; No-tillage; Organic matter; Pesticides; Soil biology; Technology; Weed control.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124531

Manual técnico para subsidiar a mistura em tanque de agrotóxicos e afins.
Provedor de dados: 14
Autores: GAZZIERO, D. L. P.; OLIVEIRA, R. B. de; OVEJERO, R. F. L.; BARBOSA, H. N.; PRECIPITO, L. M. B.
bitstream/item/228162/1/DOCUMENTOS-437-1.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Mistura; Pesticida; Tanque; Tratamento Fitossanitário; Mixers; Pesticides; Sanitation standard operating procedures.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132371

PestLCI Model: parameterization for scenarios of Brazilian agricultural production.
Provedor de dados: 14
Autores: BARIZON, R. R. M.; MATSUURA, M. I. da S. F.; SCACHETTI, M. T.; SILVA, G. B. S. da; COSTA, M. P.; GAROFALO; LANES, V. F. de; PICOLI, G.; PIGHINELLI, A. L. M. T.; MORANDI, M. A. B.
Abstract: Several methodologies have been proposed to assess the impact of pesticides applied to agricultural crops. The PestLCI Consensus v.1.0 tool presented herein helps estimating pesticide ewwmissions in agricultural processes to prepare inventories for life cycle assessment (LCA) studies. This important environmental management tool was improved to enable the incorporation of the potential impacts of these compounds on agricultural production systems. In addition, the present work also aimed to parameterize relevant agricultural production scenarios for Brazil. With this, it is expected to lead to the improvement of LCA studies that address the possible impacts of pesticides on human health and the environment.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Avaliação do ciclo de vida; Agrotóxico; Pesticida; Impacto Ambiental; Águas Superficiais; Águas Subterrâneas; Solo; Ar; Pesticides; Environmental impact; Molecular dynamics; Groundwater; Surface water; Life cycle assessment; Air.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137347

Índice de segurança, uma forma racional de compreender-se o perigo dos agrotóxicos.
Provedor de dados: 14
Autores: SILVA, J. J. C da.
bitstream/item/40081/1/COT-12.83.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cerrado; Pesticida; Toxicologia.; Pesticides; Toxicology.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/232202

Micorrizas vesicular-arbusculares em plantas forrageiras - Aspectos agronômicos e interações microbiológicas.
Provedor de dados: 14
Autores: SOUTO, S. M.; PAULA, M. A. de; FRANCO, A. A.
Importância e limitações das MVA.Infecção de forrageiras por fungos micorrizicos vesicular-arbusculares (FMVA). Seleção de MVA para forrageiras.Simbiose leguminosa + FMVA + Rhizobium. Efeito de agrotóxicos na simbiose FMVA+Rhizobium+ leguminosa.Efeito de FMVA na nodulação e FBN em leguminosas. Competição da tríplice simbiose por fotossintatos.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Fixação biológica de nitrogênio; FBN; Biological nitrogen fixation; BNF.; Agrotóxico; Infecção; Nodulação; Micorriza Vesicular Arbuscular; Planta Forrageira; Rhizobium; Simbiose.; Infection; Nodulation; Pastures; Pesticides; Symbiosis; Vesicular arbuscular mycorrhizae.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/623721

Modeling pesticide movement in soils.
Provedor de dados: 14
Autores: SPADOTTO, C. A.
Resumo: A publicação sintetiza as discussões e contribuições resultantes da "lnternational Conference on Modeling Pesticide Movement in Soils" sobre a modelagem do movimento de pesticidas (agrotóxicos) nos solos com ênfase em ambientes tropicais e subtropicais , especialmente nas condições brasileiras de solo e clima.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Pesticide.; Belém (PA); Agrotóxico; Solo; Modelo de simulação; Modelo matemático.; Pesticides; Soil transport processes; Simulation models.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1023292

Dissipação de permetrina em pepino utilizando princípios de boas práticas agrícolas e de laboratório.
Provedor de dados: 14
Autores: BARIZON, R. R. M.; FERRACINI, V. L.; QUEIROZ, S. C. do N. de; SOUZA, M. D. de; SPADOTTO, C. A.; SOUZA, D. R. C. de.
Resumo - Este trabalho teve como objetivo realizar testes de campo e de laboratório, utilizando os princípios das boas práticas de laboratório (BPL) e boas práticas agrícolas (BPA). Esses princípios foram criados para harmonizar procedimentos e garantir a aceitação dos resultados em diferentes países e regiões da Organização para Cooperação e Desenvolvimento Econômico (OCDE), além de serem obrigatórios para registro de agrotóxicos. Para adequar à instalação de teste desses princípios foi realizado um estudo de campo com aplicação de permetrina no cultivo de pepino, que é considerado uma cultura com suporte fitossanitário insuficiente (ou minor crops). Este pesticida foi selecionado por duas razões: (a) vem sendo detectado nos programas de monitoramento, e...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Boas práticas de laboratório; Boas práticas agrícolas; Permetrina; GC-MS/MS; Espectrometria de massas; Agrotóxico; Espectrometria; Análise Química; Pepino; Cucumis; Pesticides; Good laboratory practices; Good agricultural practices; Mass spectrometry.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1111785

Eficiência comparativa de inseticidas no controle das pragas do arroz armazenado no Estado do Acre.
Provedor de dados: 14
Autores: FAZOLIN, M.
No Brasil, as perdas de grãos durante o armazenamento têm atingido níveis médios de 20%. No Acre, devido as precárias condições de armazenamento e os fatores climáticos favoráveis ao desenvolvimento das pragas, os níveis de perdas são superiores a 30%. Os insetos têm sido os agentes responsáveis por essas perdas, causando prejuízos quantitativos determinados pela perda de peso e prejuízos qualitativos causados pela depreciação do produto devido a presença de ovos, larvas, pupas, adultos e alterações na composição química do produto, além de facilitar o desenvolvimento de micro-organismos. Nas condições locais, 35% do arroz armazenado é atacado pelo gorgulho (Sitophilus zeamais) e 65% pela traça (Sitotroga cereealella). No controle dessas pragas alguns...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Maize weevil; Angoumois grain moth; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Oriza sativa; Plagas de plantas; Control químico; Malatión; Plaguicidas.; Arroz; Praga de planta; Gorgulho dos cereais; Sitophilus zeamais; Traça dos cereais; Sitotroga cerealella; Controle químico; Inseticida; Campo Experimental.; Rice; Plant pests; Chemical control; Pesticides; Malathion.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492345

Programme de recherche sur les produits phytosanitaires en zones littorales et estuaires
Provedor de dados: 5
Autores: Tronczynski, Jacek.
This report represents sorne thoughts and the bibliographical review focused on an appraisal of the geochemical fate in freshwater and marin environments of principal pesticides used on French littoral. The sources and routes of entry, concentrations, distribution between non-living compartments and main degradation processes of these xenobiotic substances in the aquatic environment are presented.
Tipo: Text
Palavras-chave: Produits phytosanitaires; Pollution; Environnement aquatique; Littoral.; Pesticides; Pollut~on; Aquatic environment; Littoral.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00132/24302/22300.pdf

Pollutant effects on Pacific oyster, Crassostrea gigas (Thunberg), hemocytes: Screening of 23 molecules using flow cytometry
Provedor de dados: 5
Autores: Gagnaire, Beatrice; Thomas Guyon, H; Burgeot, Thierry; Renault, Tristan.
The shellfish industry is an important economic activity in France, occurring mostly in estuarine zones subject to pollution due to anthropogenic activities. The harmful effects of pollutants on species inhabiting these estuarine zones are not well known. Among marine species, bivalve mollusks---particularly Pacific oyster, Crassostrea gigas-may serve a model of interest. The species is sedentary and filter-feeding, which favors bioaccumulation of pollutants in their tissues. Oysters may be suitable for studies on disturbance by pollutants of physiological activities, among which defense mechanisms are poorly documented in bivalves. In this study, effects of pollutants on hemocyte functions were monitored in Pacific oyster, C. gigas. Hemocytes were exposed...
Tipo: Text
Palavras-chave: Toxicity; Pesticides; PCBs; PAHs; Crassostrea gigas; Pacific oyster; Hemocytes; Flow cytometry; Cellular activities.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1695.pdf

Parental exposure to the herbicide diuron results in oxidative DNA damage to germinal cells of the Pacific oyster Crassostrea gigas
Provedor de dados: 5
Autores: Barranger, Audrey; Heude-berthelin, Clothilde; Rouxel, Julien; Adeline, Beatrice; Benabdelmouna, Abdellah; Burgeot, Thierry; Akcha, Farida.
Chemical pollution by pesticides has been identified as a possible contributing factor to the massive mortality outbreaks observed in Crassostrea gigas for several years. A previous study demonstrated the vertical transmission of DNA damage by subjecting oyster genitors to the herbicide diuron at environmental concentrations during gametogenesis. This trans-generational effect occurs through damage to genitor-exposed gametes, as measured by the comet-assay. The presence of DNA damage in gametes could be linked to the formation of DNA damage in other germ cells. In order to explore this question, the levels and cell distribution of the oxidized base lesion 8-oxodGuo were studied in the gonads of exposed genitors. High-performance liquid chromatography...
Tipo: Text
Palavras-chave: Crassostrea gigas; Oxidative stress; DNA damage; Germ cell; Pesticides.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00295/40655/39753.pdf

Toxicite relative de deux insecticides organo-phosphores l'abate et le fenitrothion
Provedor de dados: 5
Autores: Maggi, Pierre.
The effect of the 2 pesticides most frequently used against mosquitoes was tested on a number of marine organisms. Growth inhibition was tested using Phaeodactylum tricornutum and Gyrosigma spencer (algae). To 0.5 ml of culture inoculum containing similar to 100000 cells in exponential growth phase, 9.5 ml of insecticide in varying concentrations were added and the growth was recorded every 48 hour; LG sub(50) was determined. Muscular activity and filtration rate of Crassostrea angulata were tested. The acute toxicity was tested using 4 species of gastropods, 2 lamellibranchs, 5 crustaceans, 1 coelenterate and 3 fishes; the species used were: Gibbula umbilicalis, Purpura lapillus, Littorina littorea, Patella vulgata, Mytilus edulis, Cardium edule, Artemia...
Tipo: Text
Palavras-chave: Marine organisms; Toxicity test; Fenitrothion; Abate; Pesticides.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2229.pdf

Evaluation des effets délétères des métaux et des pesticides sur les gamètes et les premiers stades de développement de l’huître creuse, Crassostrea gigas : application à la problématique de la pollution du Bassin d’Arcachon
Provedor de dados: 5
Autores: Mai, Huong.
The coastal areas are subject to multiple anthropogenic pressures including chemical pollution that can pose a real risk to the sustainability of aquatic species. The Arcachon Bay, macrotidal lagoon located on the French Atlantic coast, is the important ecosystem for oyster farming. But for several years, the oyster farms face lower recruitment and high mortality of oyster spat. Chemical contamination of the environment as a factor that may contribute to the observed effects on oysters has so far not been investigated.The present thesis aimed at evaluating through different approaches, of the potential toxicity of heavy metals and pesticides representative of the Arcachon Bay contamination on the early life stages of the Pacific oyster, Crassostrea gigas....
Tipo: Text
Palavras-chave: Métaux; Huitre creuse; Test embryo-larvaire; Génotoxicité; Test de fertilité; Expression de gènes; Comet assay; Gene expression; Fertilization assay; Pesticides; Metals; Pacific oyster; Embryo-larvae toxicity assay.
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00590/70183/68199.pdf

Organic micropollutants (PAHs, PCBs, pesticides) in seaweeds of the lagoon of Venice
Provedor de dados: 5
Autores: Pavoni, B; Caliceti, M; Sperni, L; Sfriso, A.
Samples of seven genera of seaweeds (Ulva, Gracilaria, Porphyra, Grateloupia, Undaria, Fucus and Cystoseira), which can be used as environmental biomonitors and in several applications like human alimentation, animal feeding and cosmetics, were collected in four sampling sites in the Lagoon of Venice in spring and autumn 1999 with the aim of determining the contamination due to organic micropollutants (polychlorinated biphenyls. PCBs; chlorinated pesticides; polycyclic aromatic hydrocarbons, PAHs). On an average, most of the considered species were contaminated especially by PAHs (up to 56 ng g(-1) dry wt. (dw)) whereas concentrations of PCBs and pesticides in macroalgal tissues were significantly correlated and did not exceed 5 ng g-1 dw. Among the...
Tipo: Text
Palavras-chave: Macro-algues; Lagune de Venise; HAP; PCB; Pesticides; Seaweeds; Venice Lagoon; PAHs; PCBs; Pesticides.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00321/43250/42981.pdf

Rapid method for determining the sensitivity of sulphate-reducing bacteria to biocides.
Provedor de dados: 5
Autores: Sharma, A; Battersby, N; Stewart, D.
The Minimal Inhibitory Concentration (MIC) of a biocide is usually determined by adding it in various concentrations to a suitable growth medium which is then inoculated with the test bacterium. These cultures are then observed for up to 28 days for growth of the organism as shown by its production of black ferrous sulphide. A method has been developed whereby the MIC of a biocide can be found within 4 days. Instead of noting ferrous sulphide production, this new method measures changes in: 1) optical density and 2) sulphate reduction of a logarithmic culture of the test strain exposed to the biocide.
Tipo: Text
Palavras-chave: Bacteria; Microorganisms; Pesticides; Analytical techniques; Sulfate reduction.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1016.pdf

Consignes de saisie Quadrige² - Echantillonneurs Passifs - Programme CHIMIE ECHPASS POCIS - Stratégie POCIS Campagne Med DCE
Provedor de dados: 5
Autores: Fabri, Marie-claire.
Manuel utilisateur pour la saisie des données la base Quadrige² concernant les analyses de chimie dans l'eau par échantillonneurs passifs, en Méditerranée. Les données ont été acquises dans le cadre de la DCE (Directive Cadre sur l'Eau).
Tipo: Text
Palavras-chave: Quadrige²; Chimie dans l'eau; DCE; Échantillonneurs passifs POCIS; Hydrophiles; Pharmaceutiques; Pesticides.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00171/28273/26525.pdf

Effets d'un mélange de pesticides sur les hémocytes d'huître creuse, Crassostrea gigas.
Provedor de dados: 5
Autores: Gagnaire, Beatrice; Geret, Florence; Haure, Joel; Martin, Jean-louis; Burgeot, Thierry; Thomas-guyon, Hélène; Renault, Tristan.
Shellfish industry is often realised in estuarine areas, subjected to pollutions due to agricultural activities. The harmful effects of pesticides on animals inhabiting these estuarine zones are poorly documented. Bivalve molluscs represent an interesting model because they are sedentary and they filter water intensively. Effects of pesticides on haemocytes functions were tested in Pacific oyster, Crassostrea gigas and analysed by flow cytometry. A combination of pesticide at environmental concentrations was tested in vivo. Animals used corresponded to two genetically selected populations produced in hatchery.
Tipo: Text
Palavras-chave: Haemocytes; Flow cytometry; Pesticides; Crassostrea gigas.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-924.pdf

TOPHYPAC. Tolérance des communautés phytoplanctoniques aux phytosanitaires dans le panache de la Charente. Programme Évaluation et réduction des risques liés à l’utilisation des Pesticides
Provedor de dados: 5
Autores: Stachowski-haberkorn, Sabine; Guesdon, Stephane; Bechemin, Christian; Chiffoleau, Jean-francois; Brach-papa, Christophe; Soudant, Philippe; Beker, Beatriz; Jadas-hécart, Alain.
TOPHYPAC is a field study that was conducted in the Charente river estuary (Marennes-Oléron bay). The main goal was to assess the possible impact of chemical contamination with copper and pesticides on phytoplankton communities. Physical, chemical (nutrients, metals and pesticides) and biological (phytoplankton community) parameters were monitored in the field during three years, from 2011 to 2014. In 2012 and 2013, field sampling was coupled with experimental exposure of phytoplankton communities to copper and to an herbicide cocktail, after transportation to the lab: the effects were assessed using photosynthesis endpoint and cellular densities. TOPHYPAC allowed to set the framework of Charente estuary contamination with pesticides: herbicides glyphosate...
Tipo: Text
Palavras-chave: Continuum eau douce/eau côtière; Pesticides; Métaux; Communautés phytoplanctoniques; Efficacité de photosynthèse; PICT; Tolérance; Cytométrie en flux; Toxicité chronique; Freshwater/coastal water continuum; Pesticides; Metals; Phytoplankton communities; Photosynthesis efficiency; PICT; Tolerance; Flow cytometry; Chronic toxicity.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00300/41115/40289.pdf

In vitro test-based comparison of pesticide-induced sensitivity in marine and freshwater phytoplankton
Provedor de dados: 5
Autores: Arzul, Genevieve; Quiniou, Francoise; Carrie, Cecile.
This study aims to assess the effects of two pesticides, namely the insecticide carbofuran and the herbicide isoproturon, on monospecifically cultivated marine and freshwater phytoplankton according to standard methods. In the presence of pesticide, growth rates were lower in marine species Chaetoceros gracilis and Phaeodactylum tricornutum than in freshwater species Chlorella vulgaris and Selenastrum capricornutum after 72 hours. The EC50 values were obtained with the REGTOX Macro software, and the NEC values by applying the DEBtox model.
Tipo: Text
Palavras-chave: REGTOX Macro; Pesticides; Marine phytoplankton; Freshwater phytoplankton; DEBtox model.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-6605.pdf

Devenir de l'atrazine dans le bassin de Marennes-Oléron. Approche par la modélisation hydrodynamique, hydrosédimentaire et biogéochimique
Provedor de dados: 5
Autores: Vanhoutte Brunier, Alice.
Atrazine is the most widely used herbicide on cultured areas. This pesticide is degraded during its transport in rivers and streams, to the coastal area. Marennes Oléron is the main french oyster farming area, receiving the fresh water from the Charente river and ail the drainage coming from the coastal cultivated marshlands. Agriculture is thus claimed to be responsible for shellfish mortality in the aquaculture area. To simulate the changing fate of atrazine in the environment, a modelling strategy has been selected. a) First, using a two-way hydrodynamic model developped by IFREMER, the atrazine dilution trail in the Marennes Oléron area was simulated.Combined with larvae bioassays of Crassostrea gigas (Japanese oyster), the results show atrazine rates...
Tipo: Text
Palavras-chave: Produits phytosanitaires; Atrazine; Cycle biogéochimique; Modélisation; Dynamique sédimentaire; Vasières intertidales; Pesticides; Atrazine; Biogeochemical cycle; Models; Sediment transport; Intertidal muflats.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00412/52312/53082.pdf

Contamination of some aquatic species with the organochlorine pesticide chlordecone in Martinique
Provedor de dados: 5
Autores: Coat, Sophie; Bocquene, Gilles; Godard, Eric.
Martinique is a French overseas department whose economy relies heavily on agriculture. Organochlorine pesticides, mainly chlordecone, were used for banana cultivation to eradicate banana weevil over a period of 40 years. Chlordecone is chemically stable,and has a strong affinity for fatty tissues. It is therefore able to bioaccumulate in animals and thereby represent a threat to ecosystems and man. Soils from banana plantations in Martinique are heavily contaminated with chlordecone. Possible transfer of these molecules from agricultural watersheds to the aquatic environment and the organisms that live in it is feared. The hypothesis that ecosystems of Martinique might be highly contaminated with this organochlorine pesticide was investigated. Chlordecone...
Tipo: Text
Palavras-chave: W Atlantic; Caribbean Islands; Food web; Aquatic organisms; Chlordecone; Contamination; Pesticides.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1662.pdf

Approche moléculaire des effets de polluants sur l'infection à virus OsHV-1 (Ostreid Herpesvirus 1) chez l'huître creuse, Crassostrea gigas
Provedor de dados: 5
Autores: Moreau, Kevin.
Des mortalités chez l'huître creuse, Crassostrea gigas, ont été associées au virus OsHV-1 (Oyster herpes virus 1) au stade larvaire et chez des juvéniles. Cependant, aucune mortalité liée à ce virus n'a été rapportée chez les animaux adultes. Cette observation laisse suspecter l'existence de mécanismes dirigés contre ce virus chez cette espèce. Il a peu de connaissances à l'heure actuelle sur les mécanismes de défense antivirale chez les bivalves, en particulier chez l'huître creuse, C. gigas, comme étant sur-exprimés en présence du virus. Ces gènes, s'ils ne peuvent être considérés comme des gènes de défense à proprement parlé, participent à la réponse de l'huître vis à vis du virus. Par ailleurs, des polluants comme les pesticides sont susceptibles de...
Tipo: Text
Palavras-chave: Crassostrea gigas; OsHV-1; Pesticides; Expression génétique; RT-PCR semi-quantative.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/00032/14339/11622.pdf

Demonstrating the need for chemical exposure characterisation in a microplate test system: Toxicity screening of sixteen pesticides on two marine microalgae
Provedor de dados: 5
Autores: Dupraz, Valentin; Stachowski-haberkorn, Sabine; Wicquart, Jérémy; Tapie, Nathalie; Budzinski, Hélène; Akcha, Farida.
Pesticides used in viticulture create a potential risk for the aquatic environment due to drift during application, runoff and soil leaching. The toxicity of sixteen pesticides and one metabolite were evaluated on the growth of two marine microalgae, Tisochrysis lutea and Skeletonema marinoi, in 96-h exposure assays conducted in microplates. For each substance, concentrations of stock solutions were analytically measured and abiotic assays were performed to evaluate the chemical stability of pesticides in microplates. For two chemicals, microalgae exposures were run simultaneously in microplates and culture flasks to compare EC50 calculated from the two exposure systems. Results from chemical analyses demonstrated the low stability of hydrophobic...
Tipo: Text
Palavras-chave: Microalgae; Microplates; Screening; Pesticides; Toxicity; Exposure characterisation.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00474/58558/61113.pdf

Devenir de l'atrazine dans le bassin de Marennes-Oléron (France) - Approche par la modélisation hydrodynamique, hydrosédimentaire et biogéochlmique
Provedor de dados: 5
Autores: Vanhoutte Brunier, Alice.
Atrazine is the most widely used herbicide on cultured areas. This pesticide is degraded during its transport in rivers and streams, to the coastal area. Marennes Oleron is the main french oyster farming area, receiving the fresh water from the Charente river and all the drainage coming from the coastal cultivated marshlands. Agriculture is thus claimed to be responsible for shellfish mortality in the aquaculture area. To simulate the changing fate of atrazine in the environment, a modelling strategy has been selected, a) First, using a two-way hydrodynamic model developped by IFREMER, the atrazine dilution trail in the Marennes Oleron area was simulated.Combined with larvae bioassays of Crassostrea gigas (Japanese oyster), the results show atrazine rates...
Tipo: Text
Palavras-chave: Produits phytosanitaires; Atrazine; Cycle biogéochimique; Modélisation; Dynamique sédimentaire; Vasières intertidales.; Pesticides; Atrazine; Biogeochemical cycle; Models; Sediment transport; Intertidal muflats.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00306/41764/40977.pdf

Comet assay in phytoplankton as biomarker of genotoxic effects of environmental pollution
Provedor de dados: 5
Autores: Akcha, Farida; Arzul, Genevieve; Rousseau, Sabrina; Bardouil, Michele.
The alkaline comet assay was tested on different microalgae: the clinofiagellates, Karenia mikimotoi and Alexandrium minuturn, and the diatom, Chaetoceros gracilis. The microalgae were exposed during their exponential growth to the model direct genotoxicant, hydrogen peroxide (1 h, 5 and 100 pM H2O2). Following H2O2 exposure, the comet assay was validated only for K. mikimotoi for which genotoxicity was observed from the lowest tested concentration of 5 pM with a concentration-dependent effect. C. gracilis was too small in size (4 mu m) to be correctly analysed. For A. minuturn, our lysis buffer was not strong enough to digest the cellulosic thecal plates. For K. mikimotoi, the comet assay was thus applied for the study of the genotoxic effects of...
Tipo: Text
Palavras-chave: Comet assay; Genotoxicity; Pesticides; Phytoplankton.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4504.pdf

Pesticide contamination of the coastline of Martinique
Provedor de dados: 5
Autores: Bocquene, Gilles; Franco, Alain.
In January and February 2002, the presence of certain agricultural pesticides throughout the coastline of the Caribbean island of Martinique was investigated. The tropical climate of the French West Indies is suitable for banana production, which requires intensive use of pesticides. An inventory of all pesticides used on the island (compounds and tonnage) was compiled. Surveys and analyses revealed the presence of pesticides in the plumes of seven rivers. The organochlorine chlordecone and metabolites of aldicarb were detected at nearly all of the monitored sites, even though the use of chlordecone has been prohibited since 1993. Two triazines (ametryn and simazine) were also identified. The concentrations of carbamates and triazines detected in the water...
Tipo: Text
Palavras-chave: Aldicarb; Chlordecone; Triazines; Pesticides; Contamination; Martinique Island.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-879.pdf

Toxicity assessment of five emerging pollutants, alone and in binary or ternary mixtures, towards three aquatic organisms
Provedor de dados: 5
Autores: Di Poi, Carole; Costil, Katherine; Bouchart, Valerie; Halm-lemeille, Marie-pierre.
Despite a growing scientific attention on ecological impact of emerging pollutants (EPs) such as pharmaceuticals, personal care products, and pesticides, knowledge gaps remain regarding mixture toxicity and effects on aquatic organisms. Several EPs were screened in seawater (Normandy, France), and the ecotoxicity of five compounds, chosen on their occurrence in ecosystems and use worldwide, was assessed and were the biocides methylparaben (MP) and triclosan (TCS), a pesticide degradation product (AMPA), and the pharmaceuticals venlafaxine (VEN) and carbamazepine (CBZ). The acute or sub-chronic toxicity, alone or in binary/ternary mixtures of three of them (CBZ, AMPA, and MP), was assessed on one marine and two freshwater organisms: Crassostrea gigas,...
Tipo: Text
Palavras-chave: Pharmaceuticals; Personal care products; Pesticides; Mixture and single-compound toxicity; Freshwater species; Marine bivalve.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00389/50004/52260.pdf

Combination of a pesticide exposure and a bacterial challenge: In vivo effects on immune response of Pacific oyster, Crassostrea gigas (Thunberg)
Provedor de dados: 5
Autores: Gagnaire, Beatrice; Gay, Melanie; Huvet, Arnaud; Daniel, Jean-yves; Saulnier, Denis; Renault, Tristan.
To assess the impact of pollution induced by pesticides on Pacific oyster, Crassostrea gigas, health in France, in vivo effects of combined pesticide exposure and bacterial challenge on cell activities and gene expression in hemocytes were tested using flow cytometry and real-time PCR. As a first step, an in vivo model of experimental contamination was developed. Pacific oysters were exposed to a mixture of eight pesticides (atrazine, glyphosate, alachlor, metolachlor, fosetyl-alumimium, terbuthylazine, diuron and carbaryl) at environmentally relevant concentrations over a 7-day period. Hemocyte parameters (cell mortality, enzyme activities and phagocytosis) were monitored using flow cytometry and gene expression was evaluated by real-time PCR (RT-PCR)....
Tipo: Text
Palavras-chave: Gene expression; Flow cytometry; Vibrio splendidus; Pathogenesis; Phagocytosis; Hemocyte; Pesticides; Bivalve immunity; Crassostrea gigas; Pacific oyster.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3022.pdf

Characterisation and expression of four mRNA sequences encoding glutathione S-transferases pi, mu, omega and sigma classes in the Pacific oyster Crassostrea gigas exposed to hydrocarbons and pesticides
Provedor de dados: 5
Autores: Boutet, Isabelle; Tanguy, Aurelie; Moraga, Dario.
Hydrocarbon and pesticide pollution in coastal ecosystems can disturb marine bivalve metabolism. In this study, we characterised four full-length cDNA sequences encoding glutathione S-transferases (GSTs) in the Pacific oyster Crassostrea gigas. A BLAST X search showed that these four sequences encode GSTs from four different classes: GST pi, sigma, mu and omega. A phylogenetic analysis of GST was made to determine the position of oyster GST compared to invertebrate and vertebrate sequences. We developed a semi-quantitative, multiplex RT-PCR to follow the expression of these four GSTs in tissues of oysters exposed to hydrocarbons and two pesticide treatments ( glyphosate and a mixture composed of atrazine, diuron and isoproturon) under experimental...
Tipo: Text
Palavras-chave: Crassostrea gigas; Gene expression; Multiplex RTPCR; Pesticides; Hydrocarbons; CDNA sequences; Glutathione S transferases.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-431.pdf

Seasonal changes of chemical contamination in coastal waters during sediment resuspension
Provedor de dados: 5
Autores: Bancon-montigny, Chrystelle; Gonzalez, Catherine; Delpoux, Sophie; Avenzac, Muriel; Spinelli, Sylvie; Mhadhbi, Takoua; Mejri, Kaouther; Hlaili, Asma Sakka; Pringault, Olivier.
The potential of remobilization of pollutants is a major problem for anthropogenic ecosystems, because even when the anthropogenic source of pollution is identified and removed, pollutants stored in sediments can be released into the water column and impact pelagic communities during sediment resuspension provoked by dredging, storms or bottom trawling. The objectives of the present study were to assess the changes observed in the chemical composition of the water column following resuspension of a polluted marine sediment and the consequences for the chemical composition of adjacent marine waters according to season. For that purpose, an experimental sediment resuspension protocol was performed on four distinct occasions, spring, summer, fall and winter,...
Tipo: Text
Palavras-chave: Lagoon; Offshore; Trace metal elements; Pesticides; PAHs; Enrichment factor; Elutriate.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61620/65644.pdf

Étude des interactions entre infection à ostreid herpesvirus 1, immunité, autophagie et pesticides chez l’Huître creuse, Crassostrea gigas
Provedor de dados: 5
Autores: Moreau, Pierrick.
The thesis work is part of the very current issue on mass mortality outbreaks affecting Pacific oyster, C. gigas, spat and juveniles and questions about the involvement of pesticides in this phenomenon. The first part of this thesis was devoted to study the effects of pesticides on hemocyte parameters in the Pacific oyster (in vitro and in vivo). The immunomodulator effect of selected pesticides (alone or in mixture) has been explored principally through flow cytometry. The second part concerned the study of the effects of a pesticides mixture on OsHV-1 itself. No direct effects have been reported on the viral particles in presence of the pollutants. Moreover, pesticide effects on Pacific oysters were also explored through experimental pathology assays...
Tipo: Text
Palavras-chave: Pacific oyster; Pesticides; OsHV-1; Autophagy; Immunity; Hemocyte; Pathology.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00226/33740/32149.pdf

Etude des effets de polluants sur les paramètres hémocytaires de l'huître creuse, Crassostrea gigas - Interactions entre environnement, mécanismes de défense et maladies infectieuses
Provedor de dados: 5
Autores: Gagnaire, Beatrice.
Shellfish industry is mostly realized in estuary zones, which are subjected to pollutions due to anthropic activities. The harmful effects of pollutants on animals inhabiting these estuarine zones are poorly known. Among these animals, Pacific oyster, Crassostrea gigas, may represent a model because they are sedentary and they filter water intensively. Among all physiological functions possibly disturbed by pollutants, defence mechanisms are poorly studied in bivalves. Moreover, animals presenting impaired defence mechanisms may be more sensitive to infectious diseases. In this context, effects of pollutants on hemocyte functions and on sensitiveness to diseases were tested in C. gigas. After adjusting the protocols for the monitoring of hemocyte...
Tipo: Text
Palavras-chave: Real time PCR; Flow cytometry; Pesticides; Pollutants; Phagocytosis; Hemocytes; Crassostrea gigas; Pacific oyster; Pathology; Immunotoxicology; PCR en temps réel; Cytométrie de flux; Pesticides; Polluants; Phagocytose; Hémocytes; Crassostrea gigas; Huître creuse; Pathologie; Immunotoxicologie.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/these-730.pdf

Genotoxicity of diuron and glyphosate in oyster spermatozoa and embryos
Provedor de dados: 5
Autores: Akcha, Farida; Spagnol, Charlene; Rouxel, Julien.
We investigated the effects of genotoxicant exposure in gametes and embryos to find a possible link between genotoxicity and reproduction/developmental impairment, and explore the impact of chemical genotoxicity on population dynamics. Our study focused on the genotoxic effects of two herbicides on oyster gametes and embryos: glyphosate (both as an active substance and in the Roundup formulation) and diuron. France is Europe's leading consumer of agrochemical substances and as such, contamination of France's coastal waters by pesticides is a major concern. Glyphosate and diuron are among the most frequently detected herbicides in oyster production areas; as oyster is a specie with external reproduction, its gametes and embryos are in direct contact with...
Tipo: Text
Palavras-chave: Genotoxicity; Embryotoxicity; Oyster; Gametes; Pesticides; Diuron; Glyphosate.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00070/18128/15783.pdf

Effect of in vivo pesticide exposure and injection of bacteria on immune gene expression in the Pacific oyster, Crassostrea gigas
Provedor de dados: 5
Autores: Gagnaire, Beatrice; Renault, Tristan; Thomas Guyon, Hélène; Burgeot, Thierry.
Bay of Marennes-Oleron is an important French area of reproduction for sea bass, Dicentrarchus labrax. This area is often subjected to many pollutions due to anthropic activities, including pesticides and polycyclic aromatic hydrocarbons (PAH) which cause adverse effects in aquatic organisms. The harmful effects of such   contaminants on fish immune system leading to a decreased resistance against pathogens begin to be described, but remain poorly  known. In this context, influence of micropolluants, like PAH, on the defense mechanisms developed by sea bass was tested. Fish were exposed five days to a soluble fraction of PAH with environmental concentration (760 ng/L). At the end of the contamination, fish were transferred to non contaminated sea water and...
Tipo: Text
Palavras-chave: Phagocytosis; Vibrio; Pesticides; Pollutant; Crasssotrea gigas; Oysters.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/acte-3317.pdf

Experimental systems for the study of bacterial degradation of pollutants from the oil industry.
Provedor de dados: 5
Autores: Wardell, J; Brown, C.
The release of pollutants into the environment, either during normal operations or due to accidental discharges, has focussed attention on the fate and effects of xenobiotic compounds in the marine environment. This interest has been heightened by the development of the off-shore industry with the subsequent discharge of biocides from platforms. This paper describes the results obtained from investigations into the fate of biocides in the marine environment using continuous-culture techniques.
Tipo: Text
Palavras-chave: Bacteria; Continuous culture; Microbiological culture; Oil and gas industry; Pollutants; Pesticides; Biodegradation.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1018.pdf

Chitin/toxicant interactions and microbial degradation within estuarine ecosystems.
Provedor de dados: 5
Autores: Portier, R; Meyers, S.
The environmental effect and fate of several agricultural and industrial source toxicants were evaluated in controlled laboratory microcosm systems in the presence of the aminopolysaccharide polymer, chitin. Toxicants examined included methyl parathion, phenol, pentachlorophenol, 2,4 dichlorophenol, 1,2 dichloroethane and Kepone. Microcosm operating parameters, including pH/Eh, salinity, temperature, flow rate and sediment/water interface conditions, were based on comparable in situ measurements. Fate analysis predictions were based on mineralization of the parent toxicant compound as measured by chromatographic analysis or super(14)CO sub(2) expiration. Chitin, amended to continuous flow microcosms, promoted either cometabolic or cooxidative...
Tipo: Text
Palavras-chave: Controlled conditions; Chemical pollutants; Industrial wastes; Pesticides; Metabolism; Food webs; Biodegradation; Ecosystems; Microorganisms; Environmental effects; Brackishwater pollution; Estuaries; Toxicants; Chitin.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1011.pdf

Can pesticides, copper and seasonal water temperature explain the seagrass Zostera noltei decline in the Arcachon bay?
Provedor de dados: 5
Autores: Gamain, Perrine; Feurtet-mazel, Agnes; Maury-brachet, Regine; Auby, Isabelle; Pierron, Fabien; Belles, Angel; Budzinski, Helene; Daffe, Guillemine; Gonzalez, Patrice.
Dwarf eelgrasses (Zostera noltei) populations have decreased since 2005 in Arcachon Bay (southwest France). Various stressors have been pointed out, however the role of xenobiotics like pesticides or copper (Cu) and of parameters like water temperature warming have not yet been explored. To determine their impact, Z. noltei individuals were collected in a pollution-free site and transferred to the laboratory in seawater microcosms. This dwarf eelgrass was exposed to a pesticide cocktail and copper, alone or simultaneously, at temperatures (10 °C, 20 °C, 28 °C) representative of different seasons. After a two-week contamination, leaf growth, leaf bioaccumulation of Cu, and differential expression of target genes were studied. Eelgrasses bioaccumulated Cu...
Tipo: Text
Palavras-chave: Zostera noltei; Arcachon Bay; Pesticides; Copper; Cellular impacts.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00407/51831/58536.pdf

Simulated conservative tracer as a proxy for S-metolachlor concentration predictions compared to POCIS measurements in Arcachon Bay
Provedor de dados: 5
Autores: Fauvelle, Vincent; Belles, Angel; Budzinski, Helene; Mazzella, Nicolas; Plus, Martin.
The work presented here aims at comparing monitoring of S-metolachlor, the major pesticide in use in the Arcachon Bay (South West of France, transitional coastal area), by chemical analysis (monthly passive sampling) and contaminant dissipation modeling from sources (Mars-2D model). The global strategy consisted in i) identifying the major sources of S-metolachlor to the Bay, ii) monitoring these sources for 12 months, and iii) comparing modeled data in the Bay based on measured inputs, to chemical measurements made inside the Bay along with the 12-month source monitoring. Results first showed that the major S-metolachlor surface inputs to the Arcachon Bay are mainly from one single source. Modeled and measured data were in good agreement at 5 sites in the...
Tipo: Text
Palavras-chave: Passive sampling; POCIS; Mars-2D; Contaminant; Monitoring; Coastal area; Pesticides; S-metolachlor.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00445/55627/57334.pdf

Etude d’outils d’évaluation de la contamination ChimiqUe dans les eaux de la ManchE - ECUME
Provedor de dados: 5
Autores: Menet-nedelec, Florence; Halm-lemeille, Marie-pierre; Maheux, Frank; Pierre-duplessix, Olivier; Simon, Benjamin; Gonzalez, Jean-louis; Repecaud, Michel; Facq, Jean-valery.
L’étude ECUME était une opération destinée à tester localement dans les eaux côtières du littoral normand, des outils développés nationalement lors de nombreux travaux, et pressentis pour être utilisés lors des prochaines campagnes d’évaluation de la qualité chimique des masses d’eau littorales pour la DCE.  Ceci afin de déterminer la méthode la plus adaptée et opérationnelle de les déployer, et comparer leurs résultats entre eux et par rapport aux connaissances actuelles des niveaux de contamination. Trois sites ont été choisis : Chausey, baie des Veys et estuaire de Seine. Les résultats des analyses chimiques dans l’eau de mer grâce aux DGT, POCIS, SBSE, et dans les moules ont permis de confirmer le contraste du niveau de contamination en éléments traces...
Tipo: Text
Palavras-chave: Contamination chimique; Chausey; Baie des Veys; Estuaire de Seine; DGT; POCIS; SBSE; Biomarqueurs; Stabilité lysosomale; Micronoyaux; Activité catalase; Métaux; Pesticides; Substances pharmaceutiques; HAP; PCB; Phtalates; Alkylphénols.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00434/54582/55966.pdf

Pacific oyster (Crassostrea gigas) hemocyte are not affected by a mixture of pesticides in short-term in vitro assays
Provedor de dados: 5
Autores: Moreau, Pierrick; Burgeot, Thierry; Renault, Tristan.
Pesticides are frequently detected in estuaries among the pollutants found in estuarine and coastal areas and may have major ecological consequences. They could endanger organism growth, reproduction or survival. In the context of high mortality outbreaks affecting Pacific oysters, Crassostrea gigas, in France since 2008, it appears of importance to determine the putative effects of pesticides on oyster susceptibility to infectious agents. Massive mortality outbreaks reported in this species, mainly in spring and summer, may suggest an important role played by the seasonal use of pesticides and freshwater input in estuarine areas where oyster farms are frequently located. To understand the impact of some pesticides detected in French waters, their effects...
Tipo: Text
Palavras-chave: Immunity; Hemocytes; Pesticides; Pacific oyster; Crassostrea gigas; Flow cytometry; Bivalve.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00144/25555/23700.pdf

Acetylcholinesterase activity in copepods (Tigriopus brevicornis) from the Vilaine River estuary, France, as a biomarker of neurotoxic contaminants
Provedor de dados: 5
Autores: Forget, Joelle; Beliaeff, Benoit; Bocquene, Gilles.
From April 1997 to June 1998, 14 measurements of acetylcholinesterase (AChE) enzymatic activity were performed with the copepod, Tigriopus brevicornis, collected at five stations in the Vilaine River estuary (South Brittany, France). Simultaneously, four chemical analyses of triazines and one analysis of total pesticides in water were undertaken. AChE activity levels in T brevicornis were compared to the levels measured at a reference site not exposed to effluents from Vilaine River. Results reveal significant differences between AChE activity levels depending on location of stations in the plume of the river with an increasing gradient of activity from the upstream to the downstream stations, thus indicating that neurotoxic contaminants are mainly brought...
Tipo: Text
Palavras-chave: Monitoring; Estuary; Pollution; Pesticides; Tigriopus brevicornis; Acetylcholinesterase activity.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-737.pdf

Relation of Breast Cancer and Malathion Aerial Spraying in Arica, Chile
Provedor de dados: 77
Autores: Cabello,Gertrudis; Valenzuela-Estrada,Mario; Siques,Patricia; Brito,Julio; Parra,Eduardo; Valdivia,Ursula; Lavin,Claudia; Manríquez,Alejandra; Ortega,Alejandro.
Breast cancer mortality has been increasing in Arica Chile where it has surpassed the national rates 11 times between 1990 and 2010. The city of Arica was sprayed with the organophosphrous pesticide malathion in order to control the Mediterranean fly 33 years ago. Moreover we have demonstrated that a malathion treatment induces the formation of breast carcinomas in Sprague Dowley female rats. The objective of this work was to find a relationship between malathion aerial spraying and the increased mortality rate due to breast cancer that has been observed in Arica in recent years. We extracted city data bases with all breast cancer cases diagnosed from 1995 to 2005 from the Dr. Juan Noe Crevani Hospital of Arica city and Ernesto Torres Hospital of Iquique....
Tipo: Journal article
Palavras-chave: Pesticides; Organophosphates; Cholinesterase inhibitor; Metastases; Population health.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200048

Oxidative stress and comet assay in tissues of mice administered glyphosate and ampa in drinking water for 14 days
Provedor de dados: 46
Autores: Mañas,F; Peralta,L; Ugnia,L; Weyers,A; García Ovando,H; Gorla,N.
Excessive amounts of the herbicide glyphosate are incorporated daily to the soil and the ecosystems. AMPA is its major environmental breakdown product. In this study we determined the levels of thiobarbituric acid reactive substances (TBARs); quantified superoxide dismutase (SOD) and catalase (CAT) activity in liver, kidney, lung and heart, and performed the comet assay in blood and liver of mice administered glyphosate (40 or 400 mg/kg/day) or AMPA (100 mg/kg/day) in drinking water for 14 days. Exposure to glyphosate 400 mg/kg induced a statistically significant (p &lt;0.05) decrease of SOD activity in heart and an increase in CAT activity in kidney. In the comet assay there were statistically significant differences in all the treatments and tissues...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Mice; Genotoxicity.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332013000300007

BIOLOGICAL ASPECTS INVOLVED IN THE DEGRADATION OF ORGANIC POLLUTANTS
Provedor de dados: 126
Autores: Diez,M.C.
Worldwide use of pesticide has increased dramatically during the last two decades. As a consequence, pesticide residues and their transformation products are frequently found in groundwater and surface waters. This review summarizes information about polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), some chlorophenols; it mainly empathizes on pesticides, their incorporation into the environment, microorganisms involved in their degradation and, some physico-chemical aspects of pesticides behavior in soils. Details about residues of pesticides in groundwater and superficial water found in some foreign countries and in Chile are reported, as well. The fungal degradation of organic pollutants (xenobiotics) is considered as an...
Tipo: Journal article
Palavras-chave: Biodegradation; White-rot fungi; Pesticides; Biobeds.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100004

Spatial and temporal biomarkers responses of Astyanax jacuhiensis (Cope, 1894)(Characiformes: Characidae) from the middle rio Uruguai, Brazil
Provedor de dados: 83
Autores: Loro,Vania Lucia; Murussi,Camila; Menezes,Charlene; Leitemperger,Jossiele; Severo,Eduardo; Guerra,Luciana; Costa,Maiara; Perazzo,Giselle Xavier; Zanella,Renato.
Due to intense agricultural activity in the rio Uruguai (South Brazil), there is the potential for aquatic contamination by agrochemicals. In this region, there are many reservoirs to meet the water demand for rice fields, forming lentic environments. In line with this information, the aim of this study was to show a comparative analysis of some biomarkers, such as lipid peroxidation (TBARS), gluthatione S-transferase (GST), non-protein thiols (NPSH), amino acids (AA) and piscine micronucleus tests (MNE) in Astyanax jacuhiensis from lentic and lotic environments in the middle rio Uruguai region, comparing warm and cold seasons. Eight pesticides were found in water samples, with propoxur having the highest concentration found in both environments and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomonitoring; Lotic and lentic environments; Pampa; Pesticides.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300569

Integrated biomarker response index using a Neotropical fish to assess the water quality in agricultural areas
Provedor de dados: 83
Autores: Vieira,Carlos Eduardo Delfino; Almeida,Mayara da Silva; Galindo,Bruno Ambrssio; Pereira,Lindalva; Martinez,Claudia Bueno dos Reis.
Aquatic ecosystems in areas with intense agricultural activity are subject to pesticide contamination, which may compromise the health of the fish. In order to verify the quality of the water and the possible effects of pesticides on fish, a method that combines different biomarker responses into an index named "integrated biomarker response" (IBR) was applied using the biological alterations in the Neotropical fish Astyanax altiparanae. Fish were maintained in situ at five sites along a stream that runs in an agricultural area and in a stream within a forest fragment, considered a reference site. After seven days of exposure the following alterations were observed in fish confined at experimental sites: increased activity of glutathione-S-transferase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astyanax altiparanae; Biomonitoring; Biotransformation; Genotoxicity; Pesticides.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100153

Simple and rapid detection of pesticides and chemicals using surface enhanced Raman spectroscopy
Provedor de dados: 19
Autores: 角田, 英男; 上元, 好仁; 堀川, 洋.
独自の銀ナノ粒子・基板を試作し，小型ラマン分光装置を用いジチオカーバメート系農薬（Thiram: tetramethylthiuram disulfide）・パルノックスおよびメラミンのラマンおよび表面増強ラマン（Surface Enhanced Raman Spectroscopy：SERS）スペクトルの計測を行った。濃度が4ppm から0.04ppmの範囲では，濃度とピーク強度との間に良い直線関係が示された。同様に小麦粉に混合したメラミンのラマンスペクトルおよびSERS スペクトルを顕微ラマン分光装置により計測した。1ppm濃度程度まで特有のSERS 吸収ピークが観測され，定性的検出が可能であった。この銀ナノ粒子・基板を用いた小型で安価な装置による表面増強ラマン（SERS）スペクトル計測は，農薬や化学物質の分析法として感度が高く実用性が十分あると考えられた。
Palavras-chave: 迅速簡便; ラマン分光; SERS; 農薬; メラミン; Simple and rapid Raman spectroscopy; SERS; Pesticides; Melamine.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2651

Optimización de una red de estaciones marinas para monitoreo en una bahía de bolsa
Provedor de dados: 20
Autores: Arencibia, G.; Capetillo, N.; Castro, M.; Ortega, A.
Las redes de estaciones de monitoreo o muestreos empleadas en estudios ambientales dentro de amplios ecosistemas marinos, como extensas bahías de bolsa, ocasionan enormes gastos económicos y de tiempo en las campañas de muestreo, además de imprecisiones estadísticas que no las hacen representativas. En este trabajo se emplean una serie de criterios que dan basamento para la recomendación de una nueva red de estaciones a partir de estudios previos de metales pesados, hidrocarburos, pesticidas y del bentos, los cuales permiten elaborar una red de monitoreo óptima. Se tuvieron en cuenta criterios diferentes y pruebas estadísticas de análisis multivariado. La red propuesta para estudios de indicadores biológicos del bentos y contaminantes en sedimentos queda...
Tipo: Journal Contribution
Palavras-chave: Multivariate analysis; Sediments; Benthos; Heavy metals; Hydrocarbon analysis; Pesticides.
Ano: 2011
URL: http://hdl.handle.net/1834/4649

The status of persistent organic pollutants in Lake Victoria catchment
Provedor de dados: 20
Autores: Madadi, O.V; Wandiga, S. O; Jumba, I. O.
The use of most organochlorine pesticides has been banned or restricted in the republic of Kenya under the Rotterdam and Stockholm convention due to high levels of persistence in the environment and toxicity to nontarget organisms. Studies conducted in some parts of the country have revealed that residue levels of these compounds are still in the environment. However, the residues of these compounds have not been exhaustively studied in the Lake Victoria catchment area. This study was set to investigate the residues levels of p,p-DDT, o,p’- DDE, p,p-DDD, g-HCH, D-HCH, a-HCH, Aldrin, and Dieldrin, in water samples from Lake Victoria catchment. Samples were collected during the short rain, dry and wet seasons and analysed using gas chromatography equipped...
Tipo: Proceedings Paper
Palavras-chave: Pollutants; Catchment area; Pesticides; Chemical pollutants; Toxicity; Freshwater lakes; Pollution effects; Environmental impact; Inland water environment; Pollutant persistence.
Ano: 2006
URL: http://hdl.handle.net/1834/1475

Distribution of chlorinated pesticides in surface water and fish of El Temsah and Bitter Lakes, Suez Canal
Provedor de dados: 20
Autores: Said, T.O.; Hamed, M.A.
The potential effect of chlorinated pesticides pollutants carried by El Temsah and Bitter Lakes of the Suez Canal was investigated during four seasons of 2003. The results indicate the presence of total DDTs, total cyclodienes and total Hexachlorocyclohexane (HCHs) in surface water with ranges; 2.76-13.88 ng/l, 3.99-16.39 ng/l, and 0.39-1.25 ng/l, respectively. Total DDTs concentrations were ranged from 161-3100 ng/g (wet weight) with an average of 1087 ng/g (wet weight), while total HCHs concentrations were ranged from 30-1145 ng/g (wet weight) with an average of 316 ng/g (wet weight) recorded in three fish species; Lutjanus sp., R. haffara and S. rivulatus of the investigated area. Concentrations of chlorinated pesticides recorded in both of water and...
Tipo: Journal Contribution
Palavras-chave: Pesticides; Surface water; El Temsah; Bitter lakes; Suez Canal Accumulation Fish meal Wastes Water masses Fish meal Wastes http://aims.fao.org/aos/agrovoc/c_2925 http://aims.fao.org/aos/agrovoc/c_8307.
Ano: 2005
URL: http://hdl.handle.net/1834/1060

Organochlorine pesticides in residues in waters from the coastal area of Dar es Salaam and their effect on aquatic biota
Provedor de dados: 20
Autores: Mwevura, H.; Othman, O.C.; Mhehe, G.L.
Water samples were collected from Msimbazi and Kizinga rivers in Dar es Salaam and from the coastal marine environment receiving waters from these rivers during both the wet season and the dry season and analysed for various organochlorine pesticide residues using GC-ECD. The pesticides p,p’-DDE, p,p’-DDT, dieldrin and g-HCH were the only organochlorines detected at significantly greater concentrations above detection limits. There was a marked difference on the frequency of pesticide residue detection during the two seasons. All the wet season samples and 37.5% of the dry season samples contained p,p’-DDE at concentrations ranging from 0.05 to 0.45mg/l and 0.08 to 0.20mg/l respectively. p,p’-DDT was detected in 25% of the dry season samples at a...
Tipo: Journal Contribution
Palavras-chave: Pesticides; Water pollution; Pesticide residues; Http://aims.fao.org/aos/agrovoc/c_16154.
Ano: 2002
URL: http://hdl.handle.net/1834/819

Estudio de los procesos relacionados con la presencia de plaguicidas organoclorados en la Ciénaga Grande de Santa Marta
Provedor de dados: 20
Autores: Betancourt, J.M.; Ramírez-Triana, G.
The aim of this paper is to have an approach to the phenomena that take place in the lagoon complex of the Ciénaga Grande de Santa Marta (CGSM), which are related to the behavior of the remaining organochloride pesticides. Besides discussing the depuration processes, precipitation/sedimentation and the damping that are present in this coastal lagoon; with an environmental managing scope. The results analyzed were those obtained from the project called “Monitoring of the environmental conditions and the structural and functional changes of the vegetal communities and fishing resources during the rehabilitation of the CGSM”. The main removal type in the CGSM water system for organochloride compounds in the water column, occurs by  recipitation/sedimentation...
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Sedimentation; Degradation; Pesticides; Degradation; Pesticides; Coastal lagoons; Sedimentation; Http://aims.fao.org/aos/agrovoc/c_2159; Http://aims.fao.org/aos/agrovoc/c_5739; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_6926.
Ano: 2005
URL: http://hdl.handle.net/1834/2018

Estudios químicos y bacteriológicos del río Baradero (Argentina): calidad sanitaria del agua y aptitud de los peces para consumo humano
Provedor de dados: 20
Autores: Costagliola, M.; Seigneur, G.N.; Jurquiza, V.
As a result of an agreement signed by the Municipal Government of Baradero Buenos Aires Province, Argentina and the INIDEP, the sanitary quality of the Baradero River waters was studied and fish safety assessed. Results of five field surveys carried out between 1993 and 1997 are studied. Organochlorine and organophosphorate pesticide residues, as well as traces of heavy metals were analyzed in 49 fish specimens and aerobic heterotrophic bacteria (AHB), total coliform bacteria (TC) and fecal coliform bacteria (FC) were counted out in 7 sampling stations placed on the coast and the riverbed. Alpha Hexachlorohexane, gamma Hexachlorohexane, beta Hexachlorohexane, Aldrin, Heptachlor epoxide, pp'DDE and Dieldrin were detected in fish tissues. The values of AHB...
Tipo: Journal Contribution
Palavras-chave: Freshwater pollution; Pollution surveys; Chemical analysis; Water analysis; Microbiological analysis; Pesticides; Public health; Pathogenic bacteria; Pesticides; Public health; Water analysis; Microbiological analysis; Pathogenic bacteria; Http://aims.fao.org/aos/agrovoc/c_5739; Http://aims.fao.org/aos/agrovoc/c_6349; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_25302; Http://aims.fao.org/aos/agrovoc/c_34317.
Ano: 2003
URL: http://hdl.handle.net/1834/2417

Occurrence of white grubs in groundnut crop in uplands of south Vietnam: a new report
Provedor de dados: 30
Autores: G.V.R. Rao.
Palavras-chave: Animal developmental stages; Groundnuts; Integrated pest management; Biological interaction; Pesticides; Mangoes; Crops; Oilseeds; Castor (genus); Intercropping.
Ano: 2006
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3179

Pigeonpea Variety ICPL 332
Provedor de dados: 30
Palavras-chave: Pigeonpeas; Genotypes; Tolerance; Germplasm; Yields; Wet season; Pesticides; Tropical zones; Selection; Research methods.
Ano: 1992
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3833

Ocular tentacle malformation in Deroceras reticulatum (Mollusca: Gastropoda: Agriolimacidae)
Provedor de dados: 84
Autores: Daglio,Eduardo Daniel; Lucía,Micaela de; Robinson,David Gwyn; Gregoric,Diego Eduardo Gutiérrez.
Abstract Malformations in animals have long been known. In gastropod, natural and induced malformations are mentioned in different systems and in ocular tentacles, mainly linked to cases of parasitism and exposure to pollutants (molluscicides and chemicals). In this study we present a new malformation not documented in the ocular tentacles of slug Deroceras reticulatum that could be due to the action of pesticides. This malformation in D. reticulatum is the first malformation to be mentioned for South America in nursery gardens.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anomalies; Nursery gardens; Pesticides; Slugs.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100232

Modifications on Labels and Leaflets of Herbicides for Preventing and Managing Resistance
Provedor de dados: 87
Autores: CARVALHO,S.J.P.; ROSSI,C.V.S.; MELO,M.S.C.; CHRISTOFFOLETI,P.J.; KAGI,F.Y.
ABSTRACT: The challenge of managing herbicide-resistant weeds is an agricultural reality in Brazil that shall not be neglected. In this sense, Ministério da Agricultura, Pecuária e Abastecimento (MAPA) published Act No. 45 on July 14, 2017, provides the inclusion of a code system on labels and leaflets of insecticides, fungicides and herbicides, in order to demonstrate the mode of action of the active ingredient present in the product. In case of mix formulations, both molecules must be discriminated, adopting the same “Herbicide Resistance Action Committee - HRAC” international reference code. The Act No. 45 facilitates the process to choose and adopt products by all those involved in the chain production. It also collaborates with the possible to...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Mode of action; Mixtures; Pesticides; Label; Leaflets.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100601

Comparative Selectivity of Herbicides Used in Wheat Crop on the Predators Chrysoperla externa and Eriopis connexa
Provedor de dados: 87
Autores: PASINI,R.A.; PAZINI,J.B.; GRÜTZMACHER,A.D.; RAKES,M.; ARMAS,F.S.
ABSTRACT: The selectivity of eight herbicides registered for use in the wheat crop was assessed on the predators Chrysoperla externa and Eriopis connexa. Bioassays were conducted in the laboratory by exposing larvae, eggs, and pupae of these predators to dry residues of the herbicides 2,4-D amine, bentazon, glyphosate 1.200, glyphosate 1.440, ammonium glufosinate, iodosulfuron-methyl, metsulfuron-methyl, and pyrimidinedione. The herbicide ammonium glufosinate was classified as moderately harmful (class 3) to the larval stage of both predators. In the egg stage, only metsulfuron-methyl showed a reduction in larval hatching higher than 30% and was classified as slightly harmful (class 2) to eggs of E. connexa. The herbicide 2,4-D amine was classified as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Biological control; Chemical control; Triticum aestivum.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100334

Physical Compatibility and Stability of Pesticide Mixtures at Different Spray Volumes
Provedor de dados: 87
Autores: MORAES,H.M.F.; COSTA,J.O.; PEREIRA,G.A.M.; SOUZA,W.M.; SILVA,A.A.; PAIXÃO,G.P.
ABSTRACT: Available information on physical compatibility and stability of pesticide mixtures is scarce and often divergent. This knowledge is of fundamental importance in the success of pest, disease, and weed control programs. Compatibility and stability of two glyphosate formulations (WG and SL) in a mixture with fluazinam + deltamethrin + trifloxystrobin/cyproconazole at four diluted water concentrations and different times were evaluated under laboratory conditions. The evaluations were performed at the following time intervals: immediately after mixing and 1, 5, 10, 30, 120, 900, and 1,440 minutes after the mixing of pesticides. Scores were assigned on a scale ranging from 1 to 5, where 1 meant immediate separation of compounds and 5 the perfect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Formulation; Spraying.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100179

Acute Toxicity of Herbicides and Sensibility of Aquatic Plant Wolffia brasiliensis as a Bioindicator Organism
Provedor de dados: 87
Autores: PEREIRA,P.C.; BRUNETTI,I.A.; CASTRO,K.S.; CHIAROTTI,L.F.; SANTOS,B.E.; MORAES,J.C.; CRUZ,C.
ABSTRACT: This study aimed to establish the mass cultivation of Wolffia brasiliensis under laboratory conditions, determine the sensitivity of reference substances (potassium dichromate, sodium chloride, and potassium chloride), and estimate the acute toxicity (LC50;7d) for the herbicide glyphosate, diquat, paraquat, imazapyr, 2,4-D, saflufenacil, imazamox, penoxsulam, metsulfuron-methyl, and atrazine. Three media were tested for culture establishment: Hoagland’s medium, 5.0 g L-1 NPK fertilizer (20-5-20), a mixture of Oxisol + organic substrate of decaying aquatic plant (2:1; v v-1). Sensitivity tests with reference substances and acute toxicity for herbicides were carried out after establishing the cultivation. The species W. brasiliensis presented an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrophytes; Chemicals; Ecotoxicology; Reference substances; Pesticides.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100289

Streamside management zone (SMZ) efficiency in herbicide retention from simulated surface flow
Provedor de dados: 87
Autores: Matos,A.T.; Pinho,A.P.; Costa,L.M.; Morris,L.A.
Plot-scale overland flow experiments were conducted to evaluate the efficiency of streamside management zones (SMZs) in retaining herbicides in runoff generated from silvicultural activities. Herbicide retention was evaluated for five different slopes (2, 5, 10, 15, and 20%), two cover conditions (undisturbed O horizon and raked surface), and two periods under contrasting soil moisture conditions (summer dry and winter wet season) and correlated to O horizon and site conditions. Picloram (highly soluble in water) and atrazine (moderately sorbed into soil particles) at concentrations in the range of 55 and 35 µg L-1 and kaolin clay (approximately 5 g L-1) were mixed with 13.000 liters of water and dispersed over the top of 5 x 10 m forested plots. Surface...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution control; Silviculture; Pesticides; Runoff.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000100014

Phytochemistry and quantification of polyphenols in extracts of the Asteraceae weeds from Diamantina, Minas Gerais state, Brazil
Provedor de dados: 87
Autores: Petacci,F.; Tavares,W.S.; Freitas,S.S.; Teles,A.M.; Serrão,J.E.; Zanuncio,J.C.
Asteraceae weeds are rich in chemicals that have biological and pharmaceutical activities. The aims of this work were to describe the phytochemistry and quantify the polyphenols in ethanol extracts from leaves of 12 species of Asteraceae weeds collected in Diamantina, Minas Gerais State, Brazil. The screening of Asteraceae extracts revealed the presence of tannins, steroids, triterpenes, anthocyanins, and flavonoids. The total phenolic content was high in extracts of Lychnophora ericoides (147.97 ± 2.66), Lepidaploa lilacina (141.11 ± 1.99), and Eremanthus elaeagnus (134.61 ± 7.81) and low in extracts of Lychnophora ramosissima (32.65 ± 0.70), and Lychnophora sp. (54.03 ± 0.73). Extracts of Asteraceae weeds from Diamantina could have potential for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Campos rupestres; Diamantina; Pesticides; Phytochemistry; Polyphenols.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000100002

Hormesis Effect of Herbicides Subdoses on Submerged Macrophytes in Microassay Conditions
Provedor de dados: 87
Autores: PERES,L.R.S.; DELLA VECHIA,J.F.; CRUZ,C.
ABSTRACT: The goal of the study was to evaluate the effect of 2.4-D and clomazone doses on the growth of the submerged macrophytes Egeria densa and E. najas, in microassay conditions. Therefore, tests were conducted in a bioassay room at the temperature of 27.0 ± 2.0 °C, photoperiod of 24 light hours and illumination of 500 lux. The apical fragments (shoot tips) of the macrophytes with 5.0 cm of length were transferred to test tubes with a 100 mL capacity, containing 70 mL of water. The tested concentrations were: 0.1; 1.0; 3.5; 11.2; 36.5; and 118.0 mg L-1 and a control sample with seven replications. In the test with 2.4-D on E. densa, in the control sample treatment and the 0.1 mg L-1 treatment there was shorter length: at 1.0; 3.5; 11.2; 36.5 and 118.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth stimulation; Aquatic plants; Environmental dynamics; Pesticides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100275

Use of Herbicides in Sugarcane in the São Paulo State
Provedor de dados: 87
Autores: REIS,F.C.; VICTÓRIA FILHO,R.; ANDRADE,M.T.; BARROSO,A.A.M.
ABSTRACT: Sugarcane is one of the main agricultural cultivations of Brazil, and one of the crops in which herbicides are most applied. In the 2017/2018 season, the estimated sugarcane production was 694.54 million tons, with an estimated increase of 0.9% in yield for this season. In order to evaluate the use of herbicides in this crop in the São Paulo State during a five-year period, a survey was carried out with sugarcane farmers. The use of herbicides applied alone and in a formulated mixture, according to their mechanism of action, were evaluated from 2010 to 2014. Photosystem II inhibitor herbicides were the most used in this period and the total amount of herbicides of almost all mechanism of action increased from 2010 to 2014, except for photosystem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marketing; Mechanism of action; Research; Pesticides; Saccharum officinarum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100262

Controlled Release of TBH Herbicide Encapsulated on Ca-ALG Microparticles: Leaching and Phytointoxication Plants
Provedor de dados: 87
Autores: MACEDO,D.F.; DOURADO JR.,S.M.; NUNES,E.S.; MARQUES,R.P.; MORETO,J.A.
ABSTRACT: The aim of this work was to demonstrate a detailed study of the controlled release of the herbicide Tebuthiuron (TBH) encapsulated in microparticles of calcium alginate (Ca-ALG), to evaluate the phytotoxicity in different concentrations of herbicide (4, 6 and 8 g L-1), and their correlation with the depth of leaching using bioindicator plants. The Ca-ALG microparticles were prepared from the crosslinking of sodium alginate by Ca++ containing varied amounts of TBH supplied in calcium chloride (CaCl2) aqueous solution. The results showed that TBH herbicide, when encapsulated, leached to shallow depths relative to the conventional, non-encapsulated herbicide (which moved to a depth of 40-50 cm). The concentration of 4 g L-1 was the one that leached...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Biodegradable polymer; Environmental impact; Encapsulation; Agriculture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100266

Computer programs for analysis of droplets sprayed on water sensitive papers
Provedor de dados: 87
Autores: Cunha,J.P.A.R.; Farnese,A.C.; Olivet,J.J.
The use of water-sensitive papers is an important tool for assessing the quality of pesticide application on crops, but manual analysis is laborious and time-consuming. Thus, this study aimed to evaluate and compare the results obtained from four software programs for spray droplet analysis in different scanned images of water-sensitive papers. After spraying, papers with four droplet deposition patterns (varying droplet spectra and densities) were analyzed manually and by means of the following computer programs: CIR, e-Sprinkle, DepositScan and Conta-Gotas. The diameter of the volume and number medians and the number of droplets per target area were studied. There is a strong correlation between the values measured using the different programs and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray quality; Pesticides; Sprayer; Droplet size; Application technology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300023

Comparing Parts with the Whole: Willingness to Pay for Pesticide-Free, Non-GM, and Organic Potatoes and Sweet Corn
Provedor de dados: 31
Autores: Bernard,   John C.; Bernard,   Daria J.
Auction experiments were used to investigate demand relationships and willingness to pay (WTP) for four versions of potatoes and sweet corn—conventional, organic, and two parts of organic: no pesticides and non-genetically modified (non-GM). Elasticities showed strong and asymmetric substitute relationships between organic and its parts. Combined premiums of the parts were not significantly different than the whole organic premium, suggesting WTP for the attributes are not additive. A two-stage heteroskedastic tobit model found significant WTP for each part dependent on demographics and beliefs about conventional versions. Results suggest segments for parts of organic could be established alongside the whole.
Tipo: Journal Article
Palavras-chave: Auction experiments; Organic; Pesticides; Potatoes; Sweet corn; Willingness to pay; Demand and Price Analysis; Livestock Production/Industries.
Ano: 2010
URL: http://purl.umn.edu/97858

ASPECTOS TEÓRICOS E PRÁTICOS ASSOCIADOS À DECISÃO DE USO DE AGROTÓXICOS: UMA ABORDAGEM INTEGRADA ENTRE A AGRICULTURA, MEIO AMBIENTE E SAÚDE PÚBLICA.
Provedor de dados: 31
Autores: Soares,   Wagner Lopes; Porto,   Marcelo Firpo De Souza.
O objetivo desse artigo é discutir o que leva o agricultor a aplicar ou não os agrotóxicos, bem como ressaltar quais são os elementos que estão por traz dessa decisão. O presente trabalho abordará o problema a partir de uma análise integrada entre agricultura, meio ambiente e saúde pública, estabelecendo elementos que dão legitimidade à agricultura sustentável como geradora de benefícios sociais, ambientais e econômicos vis-à-vis as técnicas da agricultura convencional com uso intensivo de agrotóxicos e geradoras de externalidades negativas. Para tal, lançamos mão de alguns dados e artigos da literatura específica que ilustram os aspectos teóricos aqui levantados. Com intuito de corroborar esses aspectos teóricos, processamos os microdados da Pesquisa de...
Tipo: Conference Paper or Presentation
Palavras-chave: Agrotóxico; Intoxicação; Agricultura sustentável; Agricultura convencional; Pesticides; Poisoning; Sustainable agriculture; Conventional agriculture; Crop Production/Industries; Environmental Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/109672

Why farmers continue to use pesticides despite environmental health and sustainability costs
Provedor de dados: 31
Autores: Wilson,   Clevo; Tisdell,   Clement A.
Use of chemical inputs such as pesticides have increased agricultural production and productivity.  However, negative externalities, too, have increased.  The externalities include damage to the environment, agricultural land, fisheries, fauna and flora.  Another major externality has been the unintentional destruction of beneficial predators of insects which has led to a virulence of many species of agricultural pests.  Mortality and morbidity among agricultural workers, especially in developing countries from exposure to pesticides, are also common.  The costs from these externalities are large and affect farmers’ returns.  However, despite these high costs, farmers continue to use pesticides and in increasing quantities.  In this paper, we examine this...
Tipo: Working or Discussion Paper
Palavras-chave: Pesticides; Agriculture; Environment; Human health; Sustainability; Hysteresis; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety.
Ano: 2000
URL: http://purl.umn.edu/48363

PESTICIDE TAX, CROPPING PATTERNS, AND WATER QUALITY IN SOUTH CENTRAL TEXAS
Provedor de dados: 31
Autores: Shumway,   C. Richard; Chesser,   Rayanne R.
The impact of an ad valorem pesticide tax on cropping patterns and pesticide use was examined in the South Central Texas Crop Reporting District.  Output supply equations were econometrically estimated and used in the simulation.  A 25 percent tax on pesticide was estimated to have major impacts on cropping patterns and on pesticide use.  Assuming other input and output prices were unaffected, the supply of one important crop would fall by more than half.  Demand for some of the highly soluble and persistent pesticides, which present the greatest threat to groundwater quality, would also decrease substantially (some as much as 50 percent).
Tipo: Journal Article
Palavras-chave: Crops; Dual model; Pesticides; Water quality; Supply; Crop Production/Industries.
Ano: 1994
URL: http://purl.umn.edu/15433

UNITED STATES AND CANADIAN AGRICULTURAL HERBICIDE COSTS: IMPACTS ON NORTH DAKOTA FARMERS
Provedor de dados: 31
Autores: Taylor,   Richard D.; Koo,   Won W.
Pesticides have become a major farm production cost over the past 25 years. There are price and label differences for agricultural herbicides between the United States and Canada. Trade names are different in some cases, label restrictions vary, and weights and measures are different. The reasons for the price differences are unclear. Whether they are due to increased costs in labeling requirements, different levels of competition and use, or market segmentation is not determined. The largest total impact of using lower priced Canadian herbicide is on HRSW, followed by durum and corn. The largest per acre impact is for canola, corn, and HRSW. Herbicides with the largest total impact are Puma, followed by Roundup and Fargo. Net farm income for large,...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural Herbicide Costs; Trade armonization; North Dakota Representative Farm; Land Value; Pesticides; Crop Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/23634

Assessing Investment in Precision Farming for Reducing Pesticide Use in French Viticulture
Provedor de dados: 31
Autores: Lescot,   Jean-Marie; Rousset,   Sylvain; Souville,   Genevieve.
The paper develops a mathematical programming model for assessing the impact of Environmental Policy instruments on French winegrowing farm’s adoption of pesticides-saving technologies. We model choices with regards to investment in precision farming and plant protection practices, in a multi-periodic framework with sequential decision, integrating uncertainty on fungal disease pressure and imperfect information on equipment performance. We focus on recursive models maximizing a Utility function. These models are applied on a representative sample of 534 winegrowers from the French Farm Accountancy Data Network (FADN). As expected, both ecotaxes and green subsidies make precision farming equipment more profitable, but the investment rate remains however...
Tipo: Conference Paper or Presentation
Palavras-chave: Discrete Stochastic Programming; Precision Farming; Viticulture; Pesticides; Environmental Policy; Crop Production/Industries; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/114387

Chemical Use Reductions in Urban Fringe Agriculture
Provedor de dados: 31
Autores: Adelaja,   Adesoji O.; Sullivan,   Kevin P.; Hailu,   Yohannes G.; Govindasamy,   Ramu.
Using an augmented profit function framework designed to account for externalities related to chemical use in agriculture, this paper explains the chemical use choices of farmers in an urban fringe farming environment. It further estimates empirical logit models of reduced insecticide, fungicide, herbicide, and fertilizer usage. Results suggest that farmers who perceive their regulatory environment to be strict, who have experienced right-to-farm conflicts, and who have farms larger in size are more likely to reduce their chemical use over time, vis-à-vis other farmers. The results also suggest the importance of other farm structural and business climate factors in determining chemical use reduction choices.
Tipo: Journal Article
Palavras-chave: Chemical use; Sustainable agriculture; Herbicides; Fungicides; Fertilizer; Pesticides; Urban fringe; Agricultural and Food Policy; Agricultural Finance; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/95646

Pesticides Uses in Crop Production: What Can We Learn from French Farmers Practices?
Provedor de dados: 31
Autores: Fadhuile,   Adelaide; Lemarie,   Stephane; Pirotte,   Alain.
This article focuses on the demand system of French farmers concerning pesticides uses. We estimate the demand elasticities of herbicides, insecticides and fungicides with respect to pesticide expenditure, and considering crop differentiation. Then we compare two indexes that are used in agronomic literature to measure the intensity of pesticides uses. We retain a Linear Approximated Almost Ideal Demand System (LA/AIDS) specification. A Full-Information Maximum Likelihood estimation procedure is used for dealing with the problem of censored dependent variable. We consider two cross-sections observed in 2001 and 2006 covering pesticides uses of three crops. We confirm the previous results of the literature that farmers response to price variation is very...
Tipo: Conference Paper or Presentation
Palavras-chave: Pesticides; LA/AIDS; Elasticities; Censored System of Equations; Two-Step procedure; Quasi Maximum Likelihood; Full-Information Maximum Likelihood.; Agricultural and Food Policy; Crop Production/Industries; Demand and Price Analysis; C30; C31; C34; L11; Q11; Q12.
Ano: 2011
URL: http://purl.umn.edu/103654

Free Trade, Pesticide Regulation and NAFTA Harmonization
Provedor de dados: 31
Autores: Freshwater,   David.
Pesticides are an important farm input both in terms of cost and in terms of their impact on crop yields and quality. With freer trade in agricultural output, differences in cost of production, yield and quality can have a large effect on competitiveness. Thus there is an increased demand by farmers in Canada and the United States for harmonization of pesticide regulations, and in particular for the option to import registered pesticides for their own use. Under NAFTA the three national governments are moving to make pesticide regulation more uniform, but there are still significant differences in regulatory structure and these effectively preclude direct imports by farmers at this time. Moreover, while farmers believe they would as a group benefit from a...
Tipo: Journal Article
Palavras-chave: NAFTA; Pesticides; Price discrimination; Regulation; International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/23817

Chapter 18: MEASURING THE FOOD SAFETY RISK OF PESTICIDES
Provedor de dados: 31
Autores: Day,   Kelly A.; Kuhn,   Betsey A.; Vandeman,   Ann Marie.
This book was originally published by Westview Press, Boulder CO, 1995.
Tipo: Book Chapter
Palavras-chave: Pesticides; Food safety; Risk weighting; Total risk; Food Consumption/Nutrition/Food Safety.
Ano: 1995
URL: http://purl.umn.edu/25982

Pesticides Residues and Trade: the Apple of Discord?
Provedor de dados: 31
Autores: Drogue,   Sophie; DeMaria,   Federica.
The impact of food safety standards on international trade has already been addressed. Generally, economists try to assess trade losses borne by exporters when importing countries impose stricter regulations. In this paper we assess the impact of the Maximum Residue Levels (MRL) of pesticides on the trade of apples and pears. Rather than focusing on a particular pesticide we take into account the entire list of substances set out by the various regulations with the aim is to understand how the similarity (or dissimilarity) of these can affect trade. Most studies assess the impact of sanitary standard regulations introducing directly in the analysis the MLR put in force in the importing country. We assume that what can be crucial is the difference in the...
Tipo: Conference Paper or Presentation
Palavras-chave: Food safety; Standards; Pesticides; MRL; Apple; Pear; Market access; Crop Production/Industries; International Relations/Trade; Q17; F13.
Ano: 2011
URL: http://purl.umn.edu/114445

ESTIMATING INSECTICIDE APPLICATION FREQUENCIES: A COMPARISON OF GEOMETRIC AND OTHER COUNT DATA MODELS
Provedor de dados: 31
Autores: Hubbell,   Bryan J.
The number of insecticide applications made by an apple grower to control an insect infestation is modeled as a geometric random variable.  Insecticide efficacy, rate per application, month of treatment, and method of application all have significant impacts on the expected number of applications.  The number of applications to control a given insect population is dependent on the probability of achieving successful control with a given application.  Results suggest that northeastern growers have the highest and mid-Atlantic growers the lowest probability of controlling an infestation with a given application.  Results also indicate that scales require the least and moths the most number of applications.  Growers are not responsive to per unit insecticide...
Tipo: Journal Article
Palavras-chave: Apples; Count data; Geometric; Insect control; Pesticides; Crop Production/Industries.
Ano: 1997
URL: http://purl.umn.edu/15047

Uso de defensivos agrícolas, limites máximos de resíduos e impacto no comércio internacional: estudo de caso
Provedor de dados: 31
Autores: Fermam,   Ricardo Kropf Santos; Antunes,   Adelaide Maria de Souza.
Pesticides play an important role in agriculture, prevent loses by pests which destroy cultures and causes several damages to producers and to exporting countries of agriculture products. However, pesticides leave residues where they are used. A parameter used for residue quantification is known Maximum Residue Limit (MRL). This parameter is the most important, not only in terms of public health, but mainly international trade, causing many impacts that can represent, in some cases, barriers to trade between countries, especially when established values for a country differ from those established by international organizations. The present Article show how this parameter impacts agriculture products´ trade of developing countries, based on case study.
Tipo: Journal Article
Palavras-chave: Pesticides; Residue; MRL; International trade; International Relations/Trade.
Ano: 2009
URL: http://purl.umn.edu/56853

Assessing Recent Trends in Pesticide Use in U.S. Agriculture
Provedor de dados: 31
Autores: Fernandez-Cornejo,   Jorge; Nehring,   Richard F.; Newcomb Sinha,   Elizabeth; Grube,   Arthur; Vialou,   Alexandre.
Replaced with revised version of paper 04/20/10.
Tipo: Conference Paper or Presentation
Palavras-chave: Pesticides; Herbicides; Insecticides; Hedonic models; Genetically engineered crops; Corn; Soybeans; Cotton; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 2009
URL: http://purl.umn.edu/49271

Environmentally Adjusted Agricultural Productivity in the Great Plains
Provedor de dados: 31
Autores: Rezek,   Jon P.; Perrin,   Richard K.
This study adjusts 1960-1996 agricultural productivity gains in a panel of Great Plains states to account for the discharge of pesticide and nitrogen effluents into the environment. The agricultural-environmental technology is approximated with translog distance functions that allow us to contrast traditional versus environmentally adjusted productivity gains. Findings indicate technical change has been increasingly biased toward environmentally friendly production. While the environmental adjustment reduced overall productivity gains during the sample period, in recent years adjusted productivity outpaced the traditional measure, reflecting the pro-environment bias in technical change.
Tipo: Journal Article
Palavras-chave: Agricultural productivity; Distance function; Environmental externalities; Nitrogen; Pesticides; Technical change bias; Environmental Economics and Policy; Productivity Analysis.
Ano: 2004
URL: http://purl.umn.edu/31112

A EVOLUÇÃO DA INDÚSTRIA DE AGROTÓXICOS NO BRASIL DE 2001 A 2007: A EXPANSÃO DA AGRICULTURA E AS MODIFICAÇÕES NA LEI DE AGROTÓXICOS
Provedor de dados: 31
Autores: Terra,   Fabio Henrique Bittes; Pelaez,   Victor Manoel.
Entre os anos 2001/2007, a agricultura nacional cresceu a taxas extraordinárias, superiores às dos outros setores da economia. Este excelente desempenho da agricultura nacional ocorreu sem que existisse um aparato de políticas públicas para fomentá-lo. Desta forma, o desempenho da agricultura favoreceu a atuação de grupos de pressão sobre o marco regulatório dos agrotóxicos, no qual segmentos do setor agrícola e entidades representativas de empresas produtoras de agrotóxicos têm procurado reduzir as exigências para o registro de novos produtos, sob a alegação de que isto reduziria os preços dos agrotóxicos ao produtor rural, melhorando a competitividade da agricultura nacional, e ainda promoveria a redução do grau de concentração do mercado brasileiro de...
Tipo: Conference Paper or Presentation
Palavras-chave: Agrotóxicos; Organização Industrial; Nexo econômico-jurídico; Agricultura; Pesticides; Industrial Organization; Economic-legal nexus; Agriculture; Agribusiness; Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/109607

The relation between water use and pesticides – Some remarks on the influence of integrated farming practices
Provedor de dados: 31
Autores: Noack,   Eva Maria; Bergmann,   Holger.
Agriculture is the main user of the world’s water resources. Due to increasing concern on water quality and quantity, there is a growing interest to use the scarce water resources in the most efficient way to feed the growing world population. By employing a meta-analysis, this paper shows that pesticide use in combination with other improved production technologies have tripled agricultural water use efficiency (WUE) in the last 30 years. Recently, the European Union banned several active substances, among these more than 20 pesticides formerly used in crop growing. By doing so the progress in WUE has been put into question. This paper argues that a sudden reduction of pesticides by 50 % would lead to a need for more than 55 million hectares of additional...
Tipo: Conference Paper or Presentation
Palavras-chave: Pesticides; Water use efficiency; Production technologies; Food security; Agricultural and Food Policy; Crop Production/Industries; Farm Management; Land Economics/Use; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/109394

Farmers’ acceptance of further strengthening of private certification systems
Provedor de dados: 31
Autores: Mondelaers,   Koen; Garreyn,   F.; Steurbaut,   W.; Van Huylenbroeck,   Guido.
In their continuous quest for ecologic improvements, private voluntary certification initiatives might undermine the willingness to continue of the participating farmers. In this research, the ecologic contribution and the farmers’ acceptance of changing the pesticide policy of a private certification initiative is presented. To measure the perceived farmers’ disutility, the choice preference technique is used. We can conclude that there is room for ecologic improvements but that farmers are in general change averse, primarily because of the fear that price compensation will remain largely absent.
Tipo: Conference Paper or Presentation
Palavras-chave: Choice preference; Pesticides; Certification; Crop Production/Industries; Demand and Price Analysis.
Ano: 2008
URL: http://purl.umn.edu/43927

Do Farmers Internalise External Impacts of Pesticides in Production?
Provedor de dados: 31
Autores: Skevas,   Theodoros; Stefanou,   Spiro E.; Oude Lansink,   Alfons G.J.M.
In modern agriculture, pesticides feature so prominently in growers’ arsenal to reduce crop damage caused by various pests and diseases. But their indiscriminate use can harm human health and the environment and, eventually, impact agricultural productivity negatively. In an era of an increasing public awareness on the external effects of pesticides, the EU is trying to update its pesticide policy by establishing tax and levy schemes. An important question is whether the external impacts of pesticides are also affecting the farmers’ production environment. A damage abatement specification is used consisting of a potential output function and a damage abatement function. The damage abatement function considers both high and low toxicity pesticides, and...
Tipo: Conference Paper or Presentation
Palavras-chave: Pesticides; Externalities; Biodiversity; The Netherlands; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Security and Poverty; Land Economics/Use; Productivity Analysis.
Ano: 2010
URL: http://purl.umn.edu/109403

Potential Impacts of Bt Eggplant on Economic Surplus and Farmers’ Health in India
Provedor de dados: 31
Autores: Krishna,   Vijesh V.; Qaim,   Matin.
In this article, the potential impacts of Bt eggplant technology in Indian agriculture are analyzed. Several proprietary Bt hybrids are likely to be commercialized in the near future. Based on field trial data, it is shown that the technology can significantly reduce insecticide applications and increase effective yields. Comprehensive farm survey data are used to project farm level effects and future adoption rates. Simulations show that the aggregate economic surplus gains of Bt hybrids could be around US $108 million per year. Consumers will capture a large share of these gains, but farmers and the innovating company will benefit too. As the company has also shared its technology with the public sector, Bt open-pollinated varieties might become...
Tipo: Conference Paper or Presentation
Palavras-chave: Biotechnology; Bt eggplant; Economic surplus; Health costs; Pesticides; Public-private partnership; Health Economics and Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007
URL: http://purl.umn.edu/9909

CONTINGENT VALUATION IN FOOD POLICY ANALYSIS: A CASE STUDY OF A PESTICIDE-RESIDUE RISK REDUCTION
Provedor de dados: 31
Autores: Buzby,   Jean C.; Ready,   Richard C.; Skees,   Jerry R.
This study demonstrates how contingent valuation techniques can be used in a cost-benefit analysis of a food safety policy issue. The analysis focuses on banning a specific post harvest pesticide used in fresh grapefruit packinghouses. Benefits of the ban are measured using consumers' aggregated willingness to pay (WTP) for safer grapefruit. A national contingent valuation survey used the payment card method to obtain WTP data. Costs of the ban stem predominantly from increased post harvest losses and were estimated using a model of the market for Florida grapefruit. Results indicate that benefits of the ban outweigh costs.
Tipo: Journal Article
Palavras-chave: Contingent valuation; Cost-benefit analysis; Food safety; Pesticides; Willingness to pay; Agricultural and Food Policy.
Ano: 1995
URL: http://purl.umn.edu/15278

Tradeoffs Between Water Quality and the Economic Impacts of Low-Input Agriculture in the Coastal Plain of Virginia
Provedor de dados: 31
Autores: Diebel,   Penelope L.; Taylor,   Daniel B.; Batie,   Sandra S.; Heatwole,   Conrad D.
Agricultural activities have been identified as major contributors to the non-point pollution of the Chesapeake Bay. Low-input agricultural practices are being considered to reduce pollution in areas adjoining the Chesapeake Bay. A multiperiod mathematical programming model was used to examine the potential adoption of low-input practices and to assess the environmental consequences of these activities under different policies. The results of these analyses indicate that tradeoffs exist among the types of non-point pollution produced under each policy. Only policies that retired productive agricultural land reduced all pollutant types.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental tradeoffs; Low-input agriculture; Nitrogen; Pesticides; Farm Management; Resource /Energy Economics and Policy.
Ano: 1992
URL: http://purl.umn.edu/118176

Does It Matter Who Scouts?
Provedor de dados: 31
Autores: Lichtenberg,   Erik; Berlind,   Ayesha Velderman.
Scouting is the most widely used integrated pest management technique adopted by U.S. growers. This study applies an implicit demand formulation of the Lichtenberg-Zilberman damage abatement model to data from a survey of Maryland field crop growers to examine differences in pesticide demand between growers using scouts trained and supervised by extension and those using chemical dealer employees or scouting themselves. The results give partial support to those skeptical of the quality of scouting by farmers themselves and by consultants working for chemical dealers. Soybean growers using extension-trained scouts had significantly lower pesticide demand than those using chemical dealer employees or scouting themselves. However, no significant differences...
Tipo: Journal Article
Palavras-chave: Crop loss; Damage abatement; Extension; Integrated pest management; Pesticide demand; Pesticides; Scouting; Crop Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/31214

CONSERVATION TILLAGE AND PESTICIDE USE IN THE CORNBELT
Provedor de dados: 31
Autores: Fuglie,   Keith O.
Adoption of conservation tillage can lead to substantial environmental benefits from reduced soil erosion.  But benefits may be partially offset if adoption increases reliance on agricultural chemicals.  Using area study data from the Cornbelt, this study examines factors affecting adoption of no-till and other conservation tillage systems and their effect on chemical use and corn yield.  The results find no evidence that herbicide or fertilizer application rates are higher on fields with conservation tillage systems compared with conventional tillage.  However, insecticide use may increase somewhat and yield may be lower.  Current demographic trends in U.S. agriculture favor continued diffusion of conservation tillage.
Tipo: Journal Article
Palavras-chave: Conservation tillage; Multinomial logit model; Pesticides; Technology adoption; Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/15138

Droplets spectrum of air-assisted boom sprayers under different environmental and operational conditions
Provedor de dados: 91
Autores: Sasaki,Robson S.; Teixeira,Mauri M.; Fernandes,Haroldo C.; Zolnier,Sérgio; Maciel,Christiam F. S.; Alvarenga,Cleyton B. de.
ABSTRACT During pesticide spraying, the psychrometric conditions of the air may cause evaporation of the droplets along their trajectory from the nozzle to the target. Thus, this study aimed to evaluate the effect of air psychrometric conditions and operating pressure on the droplet spectrum of air-assisted boom sprayers. The test was performed using a prototype equipped with an axial fan, a flow homogenizer, temperature and relative air humidity sensors, a spray nozzle and a gas-heating system to warm up the airflow. With the assembled system and the aid of a particle analyser, the JSF 11002 spray nozzle was evaluated with respect to droplet spectrum in four air psychrometric conditions (7, 14, 21 and 28 hPa) and at four operating pressures (200, 300, 400...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Evaporation; Spraying; Pesticides.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100092

Performance evaluation of injection metering systems
Provedor de dados: 91
Autores: Antuniassi,Ulisses R.; Miller,Paul; Paice,Mark.
A method for measuring the performance of agricultural injection metering systems was developed and used to assess the characteristics of three commercial system designs. Steady-state characteristics were measured using both colored dyes and salt as tracers. Dynamic response characteristics were determined by measuring salt concentration downstream of the injection point by monitoring electrical conductivity of the spray solution. Salt added to a viscous test liquid changed viscosity slightly only at low shear rates and it is concluded that this liquid is appropriate for use in evaluation tests with injection systems. Results from tests with 2 systems specifically designed for operation with agricultural sprayers gave a linear response with both water and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Precision agriculture; Sprayers; Pesticides.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662002000100028

Removal of chlorpyrifos insecticide in constructed wetlands with different plant species
Provedor de dados: 91
Autores: Souza,Tamara D. de; Borges,Alisson C.; Matos,Antonio T. de; Mounteer,Ann H.; Queiroz,Maria E. L. R. de.
ABSTRACT The objective of this study was to evaluate the remediation of water containing the insecticide chlorpyrifos by using constructed wetlands (CW) cultivated with Polygonum punctatum, Cynodon spp. and Mentha aquatica, operated under different hydraulic retention times: 24, 48, 96, 144 and 192 h. The system efficiency was based on reduction of the initial concentration of chlorpyrifos and toxicity of the contaminated water. The results showed that constructed wetlands are an excellent alternative for remediation of the insecticide chlorpyrifos in aqueous medium. It was observed that the average overall removal efficiency of the insecticide was 98.6%, and in the first hydraulic retention time, 24 h, chlorpyrifos was removed to levels below the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioremediation; Phytoremediation; Organophosphate; Pesticides; Toxicity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200878

Occurrence and spatial-temporal distribution of herbicide residues in the Ipojuca River sub-basin, Pernambuco, Brazil
Provedor de dados: 91
Autores: Ferreira,Adson da S. G.; Silva,Henrique C. M. P. da; Rodrigues,Hélio O. S.; Silva,Marileide; Albuquerque Junior,Eden C. de.
ABSTRACT The intensive use of pesticides to control pests in agriculture has exposed the environment and humans to a variety of risks. Among the crops with higher consumption of these compounds there is the sugarcane, developed in regions bordered by large watersheds. In this work, the occurrence of pesticides in the water of Ipojuca River was investigated in a 50 km range of its eastern portion, in a region noted for intense agroindustrial activity, especially by sugarcane cultivation, in the state of Pernambuco. Among fungicides, herbicides, insecticides and carbamates, 238 pesticides were investigated in the Ipojuca River using the technique of liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The study, conducted in the months of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugarcane; Pesticides; Environmental contamination; LC-MS/MS.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201124

The agricultural impact of pesticides on Physalaemus cuvieri tadpoles (Amphibia: Anura) ascertained by comet assay
Provedor de dados: 103
Autores: Gonçalves,Macks W.; Gambale,Priscilla G.; Godoy,Fernanda R.; Alves,Alessandro Arruda; Rezende,Pedro H. de Almeida; Cruz,Aparecido D. da; Maciel,Natan M.; Nomura,Fausto; Bastos,Rogério P.; Marco-Jr,Paulo de; Silva,Daniela de M.
ABSTRACT Amphibians inhabiting agricultural areas are constantly exposed to large amounts of chemicals, which reach the aquatic environment during the rainy season through runoff, drainage, and leaching. We performed a comet assay on the erythrocytes of tadpoles found in the surroundings of agricultural fields (soybean and corn crops), where there is an intense release of several kinds of pesticides in different quantities. We aimed to detect differences in the genotoxic parameters between populations collected from soybeans and cornfields, and between them and tadpoles sampled from non-agricultural areas (control group). Tadpoles collected from ponds located at soybean fields had significantly more DNA damage, followed by tadpoles collected from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Bioindicators; Exposure; Genotoxicity; Pesticides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100316

Physiological selectivity of insecticides to adult of Doru luteipes (Scudder, 1876) (Dermaptera: Forficulidae)
Provedor de dados: 124
Autores: Redoan,Ana Carolina Maciel; Carvalho,Geraldo Andrade; Cruz,Ivan; Figueiredo,Maria de Lourdes Corrêa; Silva,Rafael Braga da.
Doru luteipes (SCUDDER, 1876) is considered one of the best natural enemies of the fall armyworm Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), feeding on their eggs and small caterpillars. For its conservation it is necessary to use selective insecticides to S. frugiperda and harmless to the predator. Therefore, objective of the present work was to evaluate the toxicity of insecticides registered to control of S. frugiperda. It was conducted bioassays with D. luteipes adults treated with insecticides directly by exposure to residues of compounds applied on glass plates and the consumption of eggs of S. frugiperda contaminated and offered each one, 24 and 48 hours after treatment. The insecticides were classified according to indices...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Pest; Predator; Pesticides; Toxicity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400022

Toxicities in dogs and cats caused by pesticides. Part I: Organochlorine, organophosphorous, carbamates and pyrethroids
Provedor de dados: 195
Autores: Melo, Marília Martins; de Oliveira, Neide Judith Faria; Lago, Luiz Alberto.
Toxicities caused by pesticides constitute the majority of veterinary medicine clinical emergencies. Due to their frequence, a review of the literature on pesticides toxicology is presented. Toxicities in dogs and cats in Brazil are caused mainly by organochlorine, organophosphorous, carbamates and pyrethroids, products often used in intentional or accidental poisoning of domestic animals.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Toxicity; Dogs; Cats Pesticidas; Intoxicación; Perros; Gatos pesticidas; Intoxicação; Cães; Gatos.
Ano: 2002
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3273

Rice herbicide monitoring in two Brazilian rivers during the rice growing season
Provedor de dados: 63
Autores: Marchesan,Enio; Zanella,Renato; Avila,Luis Antonio de; Camargo,Edinalvo Rabaioli; Machado,Sérgio Luiz de Oliveira; Macedo,Vera Regina Mussoi.
Irrigated rice production can involve environmental contamination with pesticides due to the proximity of the fields to rivers and to management problems. During three years (2000 to 2003) the rice herbicides clomazone, propanil and quinclorac were quantified in water during the rice growing season, in the Vacacaí and Vacacaí-Mirim Rivers, located in Rio Grande do Sul (RS) State, Brazil. Water samples were taken at several locations in each river, selected by their importance in terms of rice drainage area. The samples were analyzed by HPLC-UV. At least one herbicide was detected in 41% of the samples from the Vacacaí River and 33% from the Vacacaí-Mirim River. The most frequent herbicide in both rivers and in each year was clomazone. The amount of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clomazone; Environmental impact; Pesticides; Propanil; Quinclorac.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000200005

Compatibility between the entomopathogenic fungus Beauveria bassiana and insecticides used in coffee plantations
Provedor de dados: 63
Autores: Oliveira,Carolina Natali de; Neves,Pedro Manuel Oliveira Janeiro; Kawazoe,Lídio Sueki.
Microbial control in integrated pest management (IPM) programs of coffee plantations is an important factor for the reduction of pest population densities. The use of selective pesticides can be associated with entomopathogens, increasing the efficiency of the control and reducing the use of required insecticides. The in vitro fungitoxic effect of insecticide formulations of Thiamethoxam, Cyfluthrin, Deltamethrin, Alpha-Cypermethrin, Triazophos, Chlorpyrifos, Fenpropathrin and Endosulfan and Beauveria bassiana (CG 425 strain) was evaluated at three concentrations (FR = average field recommendation; 0.5 ´ FR and 2 ´ FR). Effects of these products on conidia germination, vegetative growth and sporulation were compared. Only five insecticides, at the FR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial control; Toxic effect; Pesticides.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400009

Investigation on the farmers opinions of the recommended corn varieties
Provedor de dados: 106
Autores: Sanga Duangratana; Sunantha Vesaurai; Amorn Vatanasan; Sutteraporn Sirisingh.
9 tables
Palavras-chave: Corn; Maize; Varieties; Seed rate; Fertilizers; Pesticides; Pest insects; Yields; ข้าวโพด; การผลิต.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3944

การใช้วิธีทางนิเวศวิศวกรรมในนาข้าวเพื่อลดความสูญเสียจากการระบาด ของแมลงศัตรูข้าวอย่างยั่งยืน
Provedor de dados: 106
Autores: Nootjarin Jungkhun; Thongma Manakul; Konsiri Srinil; Nawarat Wongkum; Kuntera Kanta; Antika Tonmit.
A study on ecological engineering on rice to develop sustainable means to reducing crop losses due to rice pest outbreaks were taken in wet season, 2011 at Chiangrai Rice Research Center and in farmer’s field at Phan District, Chiangrai Province. The main objective was to compare between of Ecological Engineering (EE) means (EE site) and farmer’s practices (control site) as well as the effects on numbers of pest and natural enemies. The numbers of species and amount of each insect pest and natural enemies were collected by visual counting, sweep net, yellow pan trap, egg bait trap and D-vac machine. It was found that : the major pest in EE site was Nephotettix spp. Whereas major natural enemies was spider such as Lycosa psedoannulata, Oxyopes sp., Argiope...
Tipo: PhysicalObject
Palavras-chave: Ecological engineering; Crop losses; Rice pest; Outbreaks; Pesticides; Sustainable rice production; Natural enemies; นิเวศน์วิศวกรรม; การสูญเสีย; แมลงศัตรูข้าว; การระบาดของแมลงศัตรู; สารเคมีกำจัดแมลง; การผลิตข้าวอย่างยั่งยืน; พืชมีดอกบนคันนา.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5582

1977 Corn and sorghum insects annual report
Provedor de dados: 106
Autores: Boonsom Meksongsee; Panya Poonyathawon; Ocha Prachuabmoh; Auranuj Kongkanjana; Arunee Wongkobrat; Malee Chawanapong; Uthai Sangkasuwan; Watchara Wongkumhang; Thalearngsak Weerawooth.
11 tables
Palavras-chave: Corn; Maize; Sorghum; Sweet corn; Pest insects; Borers; Chilo sacchariphagus; Aphids; Armyworms; Mythimna separata; Ostrinia furnacalis; Life cycle; Infestation; Insecticides; Pesticides; Insect control; Yields; Losses; ข้าวโพด; ข้าวฟ่าง; หนอนเจาะลำต้น; เพลี้ยอ่อน; หนอนเจาะฝัก; แมลงที่เป็นประโยชน์; สารกำจัดแมลง.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3930

Comunidades de aranhas (Araneae) em cultivos de seringueira (Hevea brasiliensis Muell. Arg.) no Estado de São Paulo
Provedor de dados: 104
Autores: Rinaldi,Isabela Maria Piovesan; Ruiz,Gustavo Rodrigo Sanches.
The spider fauna composition of three rubber tree commercial plantations in the Northwest part of São Paulo State, Brazil, was characterized for both canopy and litter strata. On seven occasions from April 2000 to October 2001, samples were taken by beating sheet and hand capture, resulting in a total of 946 individuals, belonging to 24 families and 119 species. The most common species were Italaman santamaria Brescovit, 1997 and Teudis sp. (Anyphaenidae), Castianeira sp. and Falconina aff. gracilis (Corinnidae), Paracleocnemis sp. (Philodromidae), Ibotyporanga naideae Mello-Leitão, 1944 (Pholcidae), Chira spinipes (Taczanowiski, 1871) and Rudra sp. (Salticidae), Achaearanea hirta (Taczanowiski, 1873) and Coleosoma floridanum (Banks, 1900) (Theridiidae)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spiders; Hevea brasiliensis; Guilds; Biodiversity; Pesticides.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300016

Characterization of pesticide consumption in the county of Santarém, Pará, Brazil
Provedor de dados: 36
Autores: SOUMIS,Nicolas; ROULET,Marc; LUCOTTE,Marc.
Many potentially harmful pesticides for both human health and the environment are used in Brazilian Amazon. However, no scientific datum on pesticide usage is presently available for this region. Consequently, it is difficult to assess which substances arc used and in which quantities. As an important premise for future work on pesticide contamination in the county of Santarém (State of Pará, Brazil), a survey was conducted in order to qualify and quantify the use of some pesticides in this region. This investigation was made between January and March 1997 and August and October 1998 and revealed use of several organophosphates, synthetic pyrethroids and carbamates insecticides. Furthermore, many herbicides and fungicides were listed. These pesticides are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Pesticides; Consumption; Utilization.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672000000400615

Fungicide and insecticide residues in rice grains
Provedor de dados: 1
Autores: Teló, Gustavo Mack; Marchesan, Enio; Zanella, Renato; Peixoto, Sandra Cadore; Prestes, Osmar Damian; Oliveira, Maurício Limberger.
The objective of this study was to analyse residues of fungicides and insecticides in rice grains that were subjected to different forms of processing. Field work was conducted during three crop seasons, and fungicides and insecticides were applied at different crop growth stages on the aerial portion of the rice plants. Azoxystrobin, difenoconazole, propiconazole, tebuconazole, and trifloxystrobin fungicides were sprayed only once at the R2 growth stage or twice at the R2 and R4 growth stages; cypermethrin, lambda-cyhalothrin, permethrin, and thiamethoxam insecticides were sprayed at the R2 growth stage; and permethrin was sprayed at 5-day intervals from the R4 growth stage up to one day prior to harvest. Pesticide residues were analysed in uncooked,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.01.-6 Oryza sativa L.; Food; Gas chromatography; Pesticides; Grains quality Manejo e Tratos Culturais.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30594

Efeito residual de inseticidas sintéticos sobre Trichogramma pretiosum Riley (Hym., Trichogrammatidae) em diferentes gerações - DOI: 10.4025/actasciagron.v30i2.1723
Provedor de dados: 1
Autores: Moscardini, Valéria Fonseca; UFLA; Moura, Alexandre Pinho de; UFRRJ; Carvalho, Geraldo Andrade; UFLA; Lasmar, Olinto; UFLA.
O presente trabalho teve por objetivo avaliar a ação residual dos produtos etofemprox, fenitrotiom, metidatiom e triclorfom sobre adultos de Trichogramma pretiosum, bem como sobre as gerações F1 e F2 desse parasitóide, em condições de laboratório. Ovos do hospedeiro alternativo Anagasta kuehniella (Zeller) (Lep., Pyralidae) foram aderidos em cartelas de cartolina azul, inviabilizados sob lâmpada germicida e tratados por imersão nas soluções inseticidas e em água destilada (testemunha) por cinco segundos. Os ovos foram expostos ao parasitismo uma, 24 e 48 horas após o tratamento, por um período de 24 horas, e posteriormente mantidos em câmara climatizada a 24&amp;plusmn;1ºC, UR de 70&amp;plusmn;10% e 12 horas de fotofase até a emergência dos parasitóides....
Palavras-chave: 5.01.02.00-1    Fitossanidade controle biológico; Inimigo natural; Parasitóide; Pesticidas; Seletividade 5.01.02.00-1    Fitossanidade biological control; Natural enemy; Parasitoid; Pesticides; Selectivity.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1723

Acute toxicity of pyrazosulfuron-ethyl and permethrin to juvenile Litopenaeus vannamei - doi: 10.4025/actascibiolsci.v33i1.6974
Provedor de dados: 3
Autores: Mello, Giovanni Lemos de; EPAGRI; Amaral Júnior, Hilton; Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri; Garcia, Silvano; Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri; Vinatea, Luis; UFSC.
The objective of this study was to determine the LC50 (96h) of two pesticides: Sirius&amp;reg; 250 SC herbicide of the pyrazosulfuron-ethyl group, and Talcord&amp;reg; insecticide of the permethrin group, on juvenile Litopenaeus vannamei. Shrimp total hemocyte count (THC) was also determined as an indication of physiological alterations caused by the pesticides. Juvenile shrimp (5.0 &amp;plusmn; 0.5 g) were exposed to the following concentrations: 0, 0.1, 1.0, 10, 100 and 1000 &amp;micro;g L-1 Sirius&amp;reg; 250 SC; and 0, 0.001, 0.01, 0.1, 1.0 and 10 &amp;micro;g L-1 Talcord&amp;reg;. The Talcord&amp;reg; LC50 (96h) was of 0.00933 &amp;micro;g L-1 or 9.33 ng L-1. There were no significant changes in the THC between control and test groups. No...
Palavras-chave: Toxicology; Pesticides; Shrimp culture; Litopenaeus vannamei Toxicology; Pesticides; Shrimp culture; Litopenaeus vannamei.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6974

Space-time variation in the composition, richness and abundance of social wasps (Hymenoptera: Vespidae: Polistinae) in a forest-agriculture mosaic in Rio Grande do Sul, Brazil
Provedor de dados: 3
Autores: Klein, Ricardo Pablo; Somavilla, Alexandre; Köhler, Andreas; Cademartori, Cristina Vargas; Forneck, Eduardo Dias.
Wasps, important agents for the control of insect population, have been scantily studied in the Brazilian State of Rio Grande do Sul. Current study investigates monthly variations of social wasps in microhabitats within a forest-agriculture mosaic. Samples were collected between February 2013 and February 2014, through active search and baited traps made from 2 L transparent PET bottles, in five microhabitats, namely, forest, monoculture, polyculture and the edges between the forest fragment and monoculture and polyculture, in the municipality of Doutor Maurício Cardoso. Statistical tests, similarity indices, dominance and constancy as well as PCoA were used for data analysis to group the collection. A total of 953 specimens were collected, distributed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.02.00-1 forest fragment; Landscape; Northwest; Pesticides; Polyculture; Seasons.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27853

Occupational risks associated with the use of pesticides in the green belt of Córdoba, Argentina
Provedor de dados: 40
Autores: Franchini,Germán; Butinof,Mariana; Blanco,Marcelo P.; Machado,Ana L.; Fernández,Ricardo A.; Díaz,María Del Pilar.
Horticulture is an activity with high occupational risk and few studies have addressed this problem in Argentina. We studied groups of horticultural workers in the Green Belt of Córdoba City (GBCC) (Argentina) and identified some determinants of occupational accidents caused by the use of pesticides. An observational study was conducted, examining demographic, productive and labor issues in 101 workers. A Multiple Correspondence Analysis (MCA) enabled distribution and covariance patterns to be visualized and typologies of individuals to be established. Logistic regression models were used to identify occupational accidents with pesticides. The MCA identified the more vulnerable groups: those using backpacks to apply pesticides, those who sprayed a great...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Accidents; Agricultural workers; Pesticides; Risk.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432016000100007

Minimizing flight time and fuel consumption for airborne crop spraying
Provedor de dados: 111
Autores: Kamal, Syed Shariq; Jackman, Patrick; Grieve, Bruce.
Abstract: With the world’s growing population and increase in urbanization, the requirement for optimized agriculture has increased.  Agricultural operations such as crop spraying and water management require rigorous monitoring of crops in order to identify the correct time to spray and irrigate the crops.  Thus managing vast properties require an affordable spraying strategy.  Advancement in computer processing speed and algorithms has made it possible to devise such strategies to optimize several agricultural operations.  One of those operations is to spray crops with pesticides and monitor crops.  This requires an airborne vehicle which can monitor and spray crops efficiently.  Several optimization techniques have been used in recent years to optimize...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop spraying; Optimisation; Airborne vehicles; Pesticides; Artificial intelligence; United Kingdom.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2368

Investigation of potential biomarkers for the early diagnosis of cellular stability after the exposure of agricultural workers to pesticides
Provedor de dados: 42
Autores: ALVES,JODEL S.; SILVA,FERNANDA R. DA; SILVA,GABRIELI F. DA; SALVADOR,MIRIAN; KVITKO,KÁTIA; ROHR,PAULA; SANTOS,CARLA E.I. DOS; DIAS,JOHNNY F.; HENRIQUES,JOÃO A.P.; SILVA,JULIANA DA.
ABSTRACT Agricultural workers involved in the harvest of tobacco crops are regularly exposed to large quantities of pesticides. In order to determine how this exposure to pesticides induces genetic alterations in these workers, blood samples were obtained from 77 exposed individuals, as well as from 60 unexposed subjects. DNA damage was analyzed by the Comet assay and by the micronucleus (MN) test. The antioxidant profile was evaluated by activity of superoxide dismutase (SOD), and the polymorphism of gene PON1 was used as a susceptibility biomarker. The content of inorganic elements in the blood samples was determined by PIXE analysis. Our results demonstrated that the damage frequency, damage index, the MN frequency, and the SOD activity were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Comet assay; Micronucleus test; Superoxide dismutase activity; PON1 gene.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100349

Validation of a liquid chromatography ultraviolet method for determination of herbicide diuron and its metabolites in soil samples
Provedor de dados: 42
Autores: FELICIO,ANA LUCIA S.M.; MONTEIRO,ALESSANDRA M.; ALMEIDA,MARIANA B.; MADEIRA,TIAGO B.; NIXDORF,SUZANA L.; YABE,MARIA JOSEFA S.
ABSTRACT Diuron is one of the most widely herbicide used worldwide, which can undergo degradation producing three primary metabolites: 3,4-dichlorophenylurea, 3-(3,4-dichlorophenyl)-1-methylurea, and 3,4-dichloroaniline. Since the persistence of diuron and its by-products in ecosystems involves risk of toxicity to environment and human health, a reliable quantitative method for simultaneous monitoring of these compounds is required. Hence, a simple method without preconcentration step was validated for quantitation of diuron and its main metabolites by high performance liquid chromatography with ultraviolet detection. Separation was achieved in less than 11 minutes using a C18 column, mobile phase composed of acetonitrile and water (45:55 v/v) at 0.86 mL...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Degradation products; HPLC-UV; Soil; Environmental control.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401235

Toxicity and motor changes in Africanized honey bees (Apis mellifera L.) exposed to fipronil and imidacloprid
Provedor de dados: 42
Autores: BOVI,THAÍS S.; ZALUSKI,RODRIGO; ORSI,RICARDO O.
ABSTRACT This study evaluated the in vitro toxicity and motor activity changes in African-derived adult honey bees (Apis mellifera L.) exposed to lethal or sublethal doses of the insecticides fipronil and imidacloprid. Mortality of bees was assessed to determine the ingestion and contact lethal dose for 24 h using probit analysis. Motor activities in bees exposed to lethal (LD50) and sublethal doses (1/500th of the lethal dose) of both insecticides were evaluated in a behavioral observation box at 1 and 4 h. Ingestion and contact lethal doses of fipronil were 0.2316 ? 0.0626 and 0.0080 ? 0.0021 μg/bee, respectively. Ingestion and contact lethal doses of imidacloprid were 0.1079 ? 0.0375 and 0.0308 ? 0.0218 μg/bee, respectively. Motor function of bees...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment; Pesticides; Pollinators; Contamination; Phenylpyrazoles; Neonicotinoids.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100239

Ecotoxicological studies on the pejerrey (Odontesthes bonariensis, Pisces Atherinopsidae)
Provedor de dados: 47
Autores: Carriquiriborde,Pedro; Ronco,Alicia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Odontesthes bonariensis; Ecotoxicology; Environmental pollution; Heavy metals; Pesticides.
Ano: 2006
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100012

Histological Alterations in Common Carp (Cyprinus carpio Linnaeus, 1758) Gills as Potential Biomarkers for Fungicide Contamination
Provedor de dados: 52
Autores: Stoyanova,Stela; Yancheva,Vesela Slavcheva; Velcheva,Iliana; Uchikova,Ekaterina; Georgieva,Elenka.
ABSTRACTThe present study aimed to investigate the histological alterations in common carp gills caused by a fosetyl-Al and fenamidone based fungicide tested in laboratory conditions at 30, 38 and 50 mg/L concentration. In general, all the tested concentrations activated compensatory-adaptive mechanisms, which caused pathological changes in the fish gills. Results showed different histological alterations in the gill structure, which included lamellar lifting, edema, proliferation of the glandular cells and epithelium, covering the gill filament, fusion and degenerative alterations. Blood circulatory system showed vasodilatation of the secondary lamellae and aneurysms. Overall, there was enhancement of the gill histological changes, which was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histology; Fish; Gills; Pesticides; Contamination; Biomarkers.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000500757

Direct effect of  p,p'- DDT on mice liver
Provedor de dados: 60
Autores: Arroyo-Salgado,Bárbara; Olivero-Verbel,Jesús; Guerrero-Castilla,Angélica.
ABSTRACT Contact with the pesticide dichlorodiphenyltrichloroethane (p,p′-DDT) can be the cause of various harmful effects in humans, wildlife, and the environment. This pesticide is known to be persistent, lipophilic, resistant to degradation, and bioaccumulive in the environment and to be slowly released into bloodstream. Growing evidence shows that exposure to DDT is linked to type 2 diabetes mellitus. Individuals exposed to elevated levels of DDT and its metabolite have an increased prevalence of diabetes and insulin resistance. To evaluate these possible relationships, experiments were performed on eight-week-old female mice, divided into three groups (n = 10 per group): Group 1 received a vehicle-control intraperitoneal (i.p.) injection of sesame...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Persistent organic pollutant; Dichlorodiphenyltrichloroethane/exposure; Type 2 diabetes mellitus/exposure to dichlorodiphenyltrichloroethane/experimental study; Insulin/resistance/exposure to dichlorodiphenyltrichloroethane; Gene expression.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502016000200287

Study of the effect of Aliette on the activity of spinach (Spinacea oleracea L.) chloroplasts
Provedor de dados: 61
Autores: Almeida,Pedro; Coutinho,João P.; Rocha,João; Gomes-Laranjo,José.
Intensification of production in modern agriculture is frequently obtained thanks to the increase of pesticide applications and chemical fertilizers. However, the use of these products sometimes causes a reduction of crop productivity. We aimed to evaluate the impact of the fungicide Aliette on in vitro activity of chloroplasts of spinach (Spinacea oleracea L.). Transmembrane potential formation, PSII oxygen evolution and PSII photochemistry were analyzed. Our results showed that the recommended concentration (2.5 g L-1) of Aliette did not impair the photosynthetic apparatus. However, at higher concentrations (&gt; 7.5 g L-1), reductions in thylakoid membrane potential and oxygen evolution were recorded, but with no evidence of photoinhibition.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioenergetics; Ecotoxicology; Pesticides; Photosynthesis; Xenobiotics.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000100009

Effect of Irrigation Levels on Dissolved Organic Carbon Soil Distribution and the Depth Mobility of Chlorpyrifos
Provedor de dados: 117
Autores: Junod,Julio; Zagal,Erick; Sandoval,Marco; Barra,Ricardo; Vidal,Gladys; Villarroel,Mario.
Water flows provided by irrigation systems may be associated with dissolved organic carbon (DOC) content in the soil solution and may modify the mobility of pesticides, such as chlorpyrifos (CHP). These compounds were analyzed under field conditions, evaluating their distribution in the soil profile under excessive irrigation in a Humic Haploxerand soil. The trial was carried out in soil columns located under the canopy of apple trees (Malus domestica Borkh.) in an orchard located in the Bío-Bío Region, Chile. The insecticide CHP was applied 120 g hL-1, and later the natural run off was collected from the foliage to the columns. Surface irrigation was used as a control, the equivalent to 4 L h-1 weekly, plus two treatments over the columns of 6 and 8 L h-1...
Tipo: Journal article
Palavras-chave: Pesticides; Organic matter; Volcanic soil.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300017

Side Effects of Fungicides Used in Cucurbitaceous Crop on Trichogrammaatopovirilia Oatman &amp;amp; Platner (Hymenoptera: Trichogramatidae)
Provedor de dados: 117
Autores: Pratissoli,Dirceu; Milanez,André M.; Barbosa,Wagner F.; Celestino,Flávio N.; Andrade,Gilberto S.; Polanczyk,Ricardo A.
Trichogramma spp. (Hymenoptera: Trichogrammatidae) can control Diaphania hyalinata Linnaeus (Lepidoptera: Pyralidae). On the other hand, pesticides may reduce the efficiency of natural enemies. The objective was to evaluate the side-effects of fungicides used in the production of cucurbitaceous crops on Trichogramma atopovirilia Oatman &amp;amp; Platner parasitizing D. hyalinata eggs. The fungicides used in bioassays were: azoxystrobin (0.08 g active ingredient [ai] L-1), chlorothalonil (2.00 g ai L-1), mancozeb (1.60 g ai L-1), tebuconazole (0.25 g ai L-1) and thiophanate-methyl (0.49 g ai L-1). Cardboards with 30 D. hyalinata eggs previously immersedin fungicide solutions and distilled water (control) were offered separately to 20 newly emerged T....
Tipo: Journal article
Palavras-chave: Cucurbit borer; Pesticides; Egg parasitoid; Selectivity.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200016

Screening of white rot fungal species for their capacity to degrade lindane and other isomers of hexachlorocyclohexane (HCH)
Provedor de dados: 118
Autores: Quintero,Juan C; Moreira,María T; Feijoo,Gumersindo; Lema,Juan M.
White-rot fungi have demonstrated a high capacity to degrade organic pollutants, including the insecticide lindane (y-HCH). The purpose of this study was to evalúate the degradative capacities of several white rot fungi species, Bjerkandera adusta, Irpex lacteus, Lentinus tigrinus, Phanerochaete chrysosporium, Phanerochaete sórdida, Phlebia radiata, Pleurotus eryngii, Poliporus cialatus, and Stereum hirsutum. Fungal tolerance to various concentrations of a-, (3-, y- and 8 isomers of hexachlorocyclohexane (HCH) was studied in both liquid and soil media samples. 8- and y-HCH isomers showed the highest inhibition of fungal growth of all HCH isomers. P. chrysosporium and B. adusta exhibited a high tolerance to HCH pollution. The 8- and y-HCH isomers were...
Tipo: Journal article
Palavras-chave: Hexachlorocyclohexane; Degradation; Pesticides; Bjerkandera adusta; White rot fungi.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000200005

Diversification strategies in the pesticide industry: from seeds to biopesticides
Provedor de dados: 65
Autores: Pelaez,Victor; Mizukawa,Gabriel.
ABSTRACT: The pesticide industry has undergone a diversification process led by six leading companies (Monsanto, Syngenta, Bayer, Dow, DuPont, BASF) that control roughly 68% of the world market. This growth, initiated in the second half of the 1990s, occurred through deals and acquisitions of companies from the seed and biopesticide markets. This paper analyzes these diversification strategies, which have involved a capital mobilization process based on the exploitation of economies of scope and management of complementary assets. This aims to minimize the risks of investment in consolidated markets as well as in new ones.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Seeds; Biopesticides; Diversification; Growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200152

Acute toxicity test of agricultural pesticides on silver catfish (Rhamdia quelen) fingerlings
Provedor de dados: 65
Autores: Kreutz,Luiz Carlos; Barcellos,Leonardo José Gil; Silva,Tális Oliveira; Anziliero,Deniz; Martins,Daiana; Lorenson,Monique; Marteninghe,Ariane; Silva,Leonardo Bolognese da.
Toxicity risks of agricultural pesticides to fishes are pivotal. Currently, many questions remain unsolved regarding to the toxicity of commonly used pesticides to silver catfish (Rhamdia quelen), a South American catfish. The present studies have been designed to investigate the acute toxicity and the lethal concentration (LC50) of four herbicides, two fungicides and two insecticides to silver catfish fingerlings. All experiments were carried out in triplicates, in a static bioassay system, using commercially available pesticides. The data was analyzed through the Trimmed Spearman-Karber method available from the Environmental Protection Agency. The 96hLC50 and 95% lower and upper confidence limits, respectively, for the following pesticides were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioassay; Toxicity; Pesticides; LC50; Rhamdia quelen.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400022

Residual action of insecticides to larvae of Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) under greenhouse conditions
Provedor de dados: 64
Autores: Costa,Denilson Bezerra; Souza,Brígida; Carvalho,Geraldo Andrade; Carvalho,César Freire.
ABSTRACT - This work was designed to evaluate the residual action of the insecticides trichlorfon, triflumuron, endosulfan, fenpropathrin, chlorpirifos, tebufenozide and esfenvalerate, sprayed on cotton plants, to second-instar larvae of Chrysoperla externa (Hagen, 1861), under greenhouse conditions. The experimental design was completely randomized with ten replicates. Three larvae were released on each plant, in the 1st, 12th and 23rd day after pesticides spray. Tebufenozide and esfenvalerate were little persistent (class one), while trichlorfon, triflumuron and endosulfan were slightly persistent, decreasing the survival of C. externa larvae over 30%, up to 14 days after spray. Fenpropathrin and chlorpirifos caused mortality over 30%, up to 25 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Selectivity; Predator; Pesticides; Cotton.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542003000400014