Risk Assessment of Ground Water Contamination by Imidacloprid and Endosulfan Leaching in Three Different Types of Soils and Cropping Practices

Leaching of imidacloprid and endosulfan were studied in sandy, sandy-loam, and clayey soils from different agroecological zones and cropping pattern of India. Major portion of imidacloprid and endosulfan both were recovered in the top 0–5 cm soil. Only in sandy soil, imidacloprid and endosulphan could leach down to 10 cm. Texture of soil played more important role than organic C content in leaching. Under natural conditions, possibility of groundwater contamination by imidacloprid and endosulphan would be a rare possibility in sandy, sandy loam and clayey soil.