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A mathematical model to estimate the volume of grey water of pesticide mixtures. Repositório Alice
PARAIBA, L. C.; PAZIANOTTO, R. A. A.; LUIZ, A. J. B.; MAIA, A. de H. N.; JONSSON, C. M..
The usual method to calculate grey water footprint does not take into account the volume of water required to dilute concentrations of pesticide mixtures in freshwater and it also depends on maximum concentration limit acceptable in water. We propose a model to estimate the grey water footprint of crops by calculating the volume of water necessary to dilute pesticide mixtures reaching freshwaters. The model requires short-term toxicity data from aquatic organisms based on EC50 values, soil pesticide half-life and soil sorption coefficient values, and does not require maximum concentration limit acceptable in water. The lixiviation rate and runoff rate of each pesticide was estimated by attenuation factor and by Soilfug model, respectively. The usefulness...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pesticide management; Water quality objective; Agrotóxico; Herbicida; Cana-de-açúcar; Qualidade da água; Modelo matemático; Herbicides; Environmental impact; Water quality; Water footprint; Sugarcane; Mathematical models.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1000149
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Pesticide-handling practices of smallholder coffee farmers in Eastern Jamaica JARTS
Henry, Dwayne; University of the West Indies, Mona, Jamaica; Feola, Giuseppe; University of Reading, Whiteknights, RG66AB Reading, UK Dwayne Henry, University of the West Indies, Kgn. 7, Mona, Jamaica.
Pesticide use among smallholder coffee producers in Jamaica has been associated with significant occupational health effects. Research on pesticide handling practices, however, has been scarce, especially in eastern Jamaica. This explorative study aims at filling this gap and provides a first basis to develop effective interventions to promote a safer pesticide use. A random sample of 81 coffee farmers was surveyed. The majority of farmers reported to suffer from at least one health symptom associated with pesticide handling, but safety practices were scarcely adopted. There was also the risk that other household members and the wider local community are exposed to pesticides. The lack of training on pesticide management, the role of health services and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronomy and Crop Science; Sustainability studies; Public health smallholding farmers; Pesticide management; Safety; Personal protective equipment; Coffee; Jamaica.
Ano: 2013 URL: http://www.jarts.info/index.php/jarts/article/view/2013030542613
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