Behaviour of Herbicide Acetochlor in Three Soils

R. DONKOVA and D. PETKOVA
"H. Poushkarov" Institute of Soil Science, BG-1080 Sofia, Bulgaria

Abstract

DONKOVA, R. and D. PETKOVA, 2003. Behaviour of herbicide acetochlor in three soils. Bulg. J. Agric. Sci., 9: 553–555

The influence of acetochlor on soil biological activity and its degradation was studied in model experiment with three soils. The herbicide was applied in two doses: the recommendation for practical application and twice higher. Soil samples for the analysis have been taken periodically – on the 3th; 15th days; 1st, 3rd and 9th months for microbiological analysis and on the 1st, 3rd and 9th months for degradation studies. The results obtain show that acetochlor was with more pronounced and highs effect an soil microflora and highs persistence in light grey fores soil followed by alluvial meadow soil and calcareous chernozem

Key words: herbicide, acetochlor, persistence of herbicide, degradation of herbicide, microflora, soil respiration