Enhanced Dissipation of Triazole and Multiclass Pesticide Residues on Grapes after Foliar Application of Grapevine-Associated Bacillus Species.

Disease management in vineyards with fungicides sometimes results in undesirable residue accumulations in grapes at harvest. Bioaugmentation of the grape fructosphere can be a useful approach for enhancing the degradation rate and reducing the residues to safe levels. This paper reports the in vitro and in vivo biodegradation of three triazole fungicides commonly used in Indian vineyards, by Bacillus strains, namely, DR-39, CS-126, TL-171, and TS-204, which were earlier found to enhance the dissipation rate of profenophos and carbendazim.

Kinetics of degradation of carbendazim by B. subtilis strains: possibility of in situ detoxification.

Food safety is a global concern due to the increased use of pesticides in agriculture. In grapes, carbendazim is one of the frequently detected fungicides. However, it is amenable to biodegradation.

Biodegradation of profenofos by Bacillus subtilis isolated from grapevines (Vitis vinifera).

The biodegradation of profenofos, an organophosphorus insecticide, by four Bacillus subtilis strains, namely, DR-39, CS-126, TL-171, and TS-204, isolated from grapevines or grape rhizosphere was studied in liquid culture, on grape berries, and in vineyard soil. Each of the four B. subtilis strains enhanced the degradation of profenofos in all three matrices.