Aspectos da interação do homem com pesticidas no ambiente: focando a cotonicultura e com ênfase às bordas do Alto Pantanal, Mato Grosso, Brasil.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The interaction man-pesticide-environment (M-P-E), in cotton areas was characterized and, a laboratorial study on mobility of the pesticide parathion methyl (PM) into soil columns was developed. Antropic impacts and risk indicators of environmental contamination by pesticides and risks to human health were identified (RCDPEH). This study was carried on in two cotton communities (Facão - C1 and Barra Nova - C2), municipality of Cáceres, at the High Pantanal borders, Mato Grosso state (MT), Brazil, during six harvest periods (1992-97). For the characterization of the MP- E interaction, data were collected with support of the service of assistance to the cotton farmers of MT, as well as through perceptions in situ. Assays on mobilization of pesticide residues were carried on in laboratory using columns filled with top soil from three topographical positions (Pi=1,2,3) with three depths (Ei=1,2,3) collected in cotton farms (Gossypium hirsutum L.) of two communities (Ci=1,2). PM was applied at the top of soil columns and leaching was induced in three time intervals (ti=0,1,2). The percolate was collected to analyze PM residues, using gas chromatography with termoionic detector N/P (CG 500) and an integrator processor (CG 300). Results showed that the characteristics related to the M-P-E factors and their interactions can also consist in risk indicators (RCDPEH). These indicators expressed in terms of greater (r1) and lesser risk (r2) showed that the two communities were similar in the factor pesticide (P: r1 = 40,5 %), but distinct in the factors man (M: C1, r1 = 48,2 % >C2, r1 = 33,2 %), environment (E: C1, r1 = 49.1 %

ASSUNTO(S)

algodão - cultivo pesticidas quimica avaliação de riscos ambientais pantanal mato-grossense (ms e mt) pesticidas aspectos ambientais saúde e meio ambiente

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