MELO, I. S. de

MONTEIRO, R. T. R.

SPESSOTO, A. M.

English

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4"' E uropean7$Ío7ZemedLatÍOn ConferertceMINERALISATION OF 14C-LABELLED METALAXYL FUNGICIDE IN BRAZILIANSOILSANDREA M. SPESSOTO13, ITAMAR S. MELO13, REGINA T. R  MONTEIROba Laboratory of Microbiology, Embrapa Environment, Jaguariúna-SP, Brazil b Laboratory of Ecotoxicology, Cena-USP, Piracicaba-SP, BrazilABSTRACTLaboratory incubation experiments were carried out to estimate the mineralisation of metalaxyl 14C {N-(2-6 dimethyphenyl)-N-(methoxyacetyl) alanine methyl ester} in four Brazilian soils with different physico-chemical properties, at 3 and 30 |ig a.i. g 1. In the Petrolina sandy soil the mineralisation presented liigher 14C 02 production rates, at two essayed concentrations, after 70 days. Microbiological studies were done to determine the numbers of bacteria, actinobacteria and fungi (CFU g'1 soil). In relation with other microbial community, bacterial population demonstrated to be a major component of the cultivable heterotropliic community after the applicationof the compound. No detectable metabolites were found in this study. The results suggest that soil properties and application history may have a strong influence on the fungicide behavior in these soil samples.ID 2641

Mineralisation of 14c-labelled metalaxyl fungicide in Brazilian soils.

http://www.alice.cnptia.embrapa.br/bitstream/doc/16159/1/2008RA021.pdf

Mineralisation of 14c-labelled metalaxyl fungicide in Brazilian soils.

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