Influence of sugar cane farming systems on the leaching of triazine herbicides and nitrates to recharge area of Guarani aquifer

• Processo: 02/05067-1
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Data de Início da vigência: 01 de março de 2003
• Data de Término da vigência: 31 de julho de 2004
• Área do conhecimento: Ciências Agrárias - Agronomia - Ciência do Solo
• Pesquisador responsável: Antonio Luiz Cerdeira
• Beneficiário: Antonio Luiz Cerdeira
• Instituição Sede: Embrapa Meio-Ambiente. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). Jaguariúna , SP, Brasil
• Assunto(s): Plantio direto Herbicidas Cana-de-açúcar Nitratos
• Palavra(s)-Chave do Pesquisador: Agua | Cana De Acucar | Herbicidas | Nitratos | Plantio Direto | Solo

Resumo

A recharge area of the Guarani groundwater aquifer is located in Ribeirão Preto city, in Brazil, which is an important sugarcane and grain producing area. Groundwater quality surveys conducted during the past decade indicate that some U.S. aquifers are contaminated with several herbicides and it appears that several current agricultural practices may have adverse impacts on groundwater quality. Among these practices are mechanical sugar cane harvesting and notillage grain production in Brazil. Triazine herbicides such as atrazine, ametryn, simazine and nitrogen fertilizers, which are known to have high potential of groundwater contamination are used in this area of Brazil. The objective of this proposal is to evaluate the potential of ground water contamination and analyze water quality in response to mechanical sugar cane harvesting, no-tillage and conventional peanut production in rotation after sugar cane. We will determine the amount of ground water contamination and the potential movement triazines and nitrates in soil. (AU)