Degradation of the herbicide diclofop-methyl in soil and influence of pesticide mixtures on its persistence.
J Biosci
;
1984 Dec; 6(6): 829-837
Artigo
em Inglês
| IMSEAR
| ID: sea-160428
ABSTRACT
The degradation of the herbicide [14C]-diclofopmethyl was investigated in moist parabrown podzol soil at 22°C. Radiochemical procedures were used to monitor the herbicide breakdown. The mineralization of the uniformly labelled aromatic ring was pursued by trapping the 14CO2 generated for 96 days. Diclofop-methyl was rapidly degraded in the soil with a half-life of about 8 days. The major breakdown product was the corresponding aciddiclofop, formed by a very rapid hydrolysis of the esterbond. With time the acid appeared to undergo strong binding or complexing to the soil. An intermediate 4-(2,4-dichlorophenoxy) phenol was recovered from the treated soil. Concentration of the phenoxyphenol increased upto 6 days followed by quick decline. Insecticide combination of parathion + Demeton-Smethylsulphoxide partially inhibited diclofop degradation in the soil.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Idioma:
Inglês
Revista:
J Biosci
Ano de publicação:
1984
Tipo de documento:
Artigo
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