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| Registros recuperados: 154 | |
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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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| 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 |
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| 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 |
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| 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 |
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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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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 154 | |
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