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1977 Corn and sorghum insects annual report Thai Agricultural
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
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A conceptual framework to evaluate human-wildlife interactions within coupled human and natural systems Ecology and Society
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
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A EVOLUÇÃO DA INDÚSTRIA DE AGROTÓXICOS NO BRASIL DE 2001 A 2007: A EXPANSÃO DA AGRICULTURA E AS MODIFICAÇÕES NA LEI DE AGROTÓXICOS AgEcon
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
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Acetylcholinesterase activity in copepods (Tigriopus brevicornis) from the Vilaine River estuary, France, as a biomarker of neurotoxic contaminants ArchiMer
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
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Acute Toxicity of Herbicides and Sensibility of Aquatic Plant Wolffia brasiliensis as a Bioindicator Organism Planta Daninha
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
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Acute toxicity of pyrazosulfuron-ethyl and permethrin to juvenile Litopenaeus vannamei - doi: 10.4025/actascibiolsci.v33i1.6974 Biological Sciences
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® 250 SC herbicide of the pyrazosulfuron-ethyl group, and Talcord® 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 ± 0.5 g) were exposed to the following concentrations: 0, 0.1, 1.0, 10, 100 and 1000 µg L-1 Sirius® 250 SC; and 0, 0.001, 0.01, 0.1, 1.0 and 10 µg L-1 Talcord®. The Talcord® LC50 (96h) was of 0.00933 µg 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
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Acute toxicity test of agricultural pesticides on silver catfish (Rhamdia quelen) fingerlings Ciência Rural
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
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Adoption of preharvest interval in rice cultivation International Rice Research Institute
Ekanayaka, H. K. J.; Wijeratne, M..
p.81-82
Palavras-chave: Preharvest sprays; Pesticides; Insecticides; Harvesting; Sri Lanka.
Ano: 2004 URL: http://hdl.handle.net/123456789/879
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Approche moléculaire des effets de polluants sur l'infection à virus OsHV-1 (Ostreid Herpesvirus 1) chez l'huître creuse, Crassostrea gigas ArchiMer
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
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ASPECTOS TEÓRICOS E PRÁTICOS ASSOCIADOS À DECISÃO DE USO DE AGROTÓXICOS: UMA ABORDAGEM INTEGRADA ENTRE A AGRICULTURA, MEIO AMBIENTE E SAÚDE PÚBLICA. AgEcon
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
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Assessing Investment in Precision Farming for Reducing Pesticide Use in French Viticulture AgEcon
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
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Assessing Recent Trends in Pesticide Use in U.S. Agriculture AgEcon
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
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Assessment of the genotoxic impact of pesticides on farming communities in the countryside of Santa Catarina State, Brazil Genet. Mol. Biol.
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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Bioensaios de toxicidade genética com Tradescantia. Infoteca-e
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
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BIOLOGICAL ASPECTS INVOLVED IN THE DEGRADATION OF ORGANIC POLLUTANTS J. Soil Sci. Plant Nutr.
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
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BLADE ANGLE EFFECT ON DROPLET SIZE SPECTRUM OF ROTARY ATOMIZERS USED IN BRAZIL REA
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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Calidad sanitaria en la producción de nopal verdura (Opuntia sp.) en Otumba, México. Colegio de Postgraduados
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
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Can pesticides, copper and seasonal water temperature explain the seagrass Zostera noltei decline in the Arcachon bay? ArchiMer
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
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Challenges in Regulating Pesticide Mixtures Ecology and Society
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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Chapter 18: MEASURING THE FOOD SAFETY RISK OF PESTICIDES AgEcon
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
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