Open Access Research Paper Views (262) Download (12) Toxic effect of superphosphate on soil ecosystem using earthworm Drawida willsi as test specimen Anindita Bhattacharya, Sanjat Kumar Sahu J. Bio. Env. Sci.6( 4), 220-226, April 2015. Key: EarthwormFertilizerSuperphosphateToxicity test Details