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| Registros recuperados: 154 | |
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| 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... |
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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 |
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| 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... |
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Palavras-chave: Salmonella; Escherichia coli; Pesticides; Phenolic compounds; Survival; Sample size; Entomología y Acarología; Doctorado. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/590 |
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| 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... |
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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 |
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| 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... |
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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 |
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| 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... |
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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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 (% < 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 154 | |
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