An investigation was conducted on farmers field with an objective to study the “Residual effect of distillery effluent spent wash on properties of soil solum” in the jurisdiction of Padmashri Vitthalrao Vikhe Patil Sahakari Sakhar Karkhana, Pravaranagar, Taluka-Rahata, Dist- Ahmednagar during 2007-08. Ten farmers from factory area of Pravaranagar and Gogalgaon village were selected, where spent wash was applied @ 70-75 m3 ha-1 before kharif season. Soil profiles were dug in the treated farms at harvest of the crop to study the effect of post biomethanated spent wash application on soil profile characteristics. The untreated fields were selected, adjacent to treated fields, where no spent wash was applied and were treated as control check to assess the effect of spent wash treated profiles in comparison to untreated soil profiles. The effect of spent wash application was assessed for pearl millet which was grown as test crop.
The result revealed that post biomethanated spent wash was neutral in reaction with high concentration of soluble salt. The application of post bio-methanated spent wash showed improvement in bulk density and hydraulic conductivity and water retention, while no residual effect on soil texture was observed. Slightly build-up salinity with distillery effluent application. The application of distillery effluent showed significant improvement in physical properties of soil. The Mean Weight Diameter (MWD), saturated hydraulic conductivity, water retention of field capacity and available water content were significantly higher, while bulk density (BD) and penetration resistance of the surface soil were significantly lower (Hati, 2003).