Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1000149
Unidade da Embrapa/Coleção:: Embrapa Meio Ambiente - Artigo em periódico indexado (ALICE)
Data do documento: 14-Nov-2014
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: PARAIBA, L. C.
PAZIANOTTO, R. A. A.
LUIZ, A. J. B.
MAIA, A. de H. N.
JONSSON, C. M.
Informaçães Adicionais: LOURIVAL COSTA PARAIBA, CNPMA; RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA; ALFREDO JOSE BARRETO LUIZ, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA; CLAUDIO MARTIN JONSSON, CNPMA.
Título: A mathematical model to estimate the volume of grey water of pesticide mixtures.
Edição: 2014
Fonte/Imprenta: Spanish Journal of Agricultural Research, Madrid, v. 12, n. 2, p. 509-518, 2014.
Idioma: en
Palavras-chave: Pesticide management
Water quality objective
Cana-de-açúcar.
Conteúdo: 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 of the proposed model was illustrated by estimating the volume of grey water required to dilute the 17 most widely used herbicides in sugarcane crops of Brazil. The grey water footprint corresponding to the recommended agronomic dose for each herbicide varied between 4.20×106 m3 yr-1 and 1.20×1012 m3 yr-1 and the grey water footprint of the mixture of herbicides was 2.36×1012 m3 yr-1 in a cultivated area of 8.4×106 ha. These results establish the ranking position of each herbicide in the composition of the grey water footprint of mixture of herbicides. The rank of each herbicide could be used to create a label to be placed on the package of the pesticide, thus informing farmers about the volume of grey water per hectare due to the use of this herbicide.
Thesagro: Agrotóxico
Herbicida
Qualidade da água
Modelo matemático.
NAL Thesaurus: Herbicides
Environmental impact
Water quality
Water footprint
Sugarcane
Mathematical models
Ano de Publicação: 2014
Aparece nas coleções:Artigo em periódico indexado (CNPMA)

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