This research was carried out to study the persistence rate and decomposition of carbofuran and temik
nematicides in autoclaved and non-autoclaved soil inoculated with ,S. violaceusniger or /and A. brasilense.
Results indicated that the application of either carbofuran or temik to soil led to a decrease in total microbial
counts, actinomycetes counts and dehydrogenase activity. In contrast, the above mentioned parameters were
increased in soil amended with pesticides and inoculated with either S. violaceusniger or A. brasilense as well
as mixture of them. Inoculation of soil with the above mentioned strains combined with insecticides
application accelerated the dissipation rate and transformation of both carbofuran and temik specially when the
mixture of the two strains was used. Disappearance rate of carbofuran and temik and their decomposition were
more rapid in non-autoclaved soil than that in autoclaved one. Carbofuran and temik rapidly disappeared from
the soil inoculated with the mixture of A. brasilense and S. violaceusniger compared with the inoculated soil
with each strain individually. Also, results showed that carbofuran and temik rapidly degraded in soil
inoculated with S. violaceusniger than that inoculated with A. brasilense. The main compounds produced from
carbofuran degradation were carbofuran-phenol; 3-keto carbofuran; 3-hydroxy-carbofuran and other unknown
compounds. Whereas, temik mainly degraded to temik sulfone, temik sulfoxide and other unknown
compounds.
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