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Organic Manure and Urea Effect on Metolachlor Transport through Packed Soil Columns

Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110 012, India

View larger version (29K): [in a new window]   Fig. 1. Metolachlor sorption isotherms in natural, cow manure–, and urea-amended soils.

View larger version (22K): [in a new window]   Fig. 2. (a) Breakthrough and (b) cumulative elution curves of metolachlor in unamended and cow manure–amended soil columns. The term C is the amount of metolachlor in the leachate fraction while C0 is the amount applied to the column.

View larger version (23K): [in a new window]   Fig. 3. (a) Breakthrough and (b) cumulative elution curves of metolachlor in unamended and urea-amended soil columns. The term C is the amount of metolachlor in the leachate fraction while C0 is the amount applied to the column.

View larger version (39K): [in a new window]   Fig. 4. Distribution of metolachlor in (a) cow manure– and (b) urea-amended soil columns.