Influence of Chemical fertilizers and Organic fertilizers on pH and available Nitrogen content of Vermicompost with earthworm Eisenia foetida

Intensive agriculture with the use of chemical fertilizer in huge amount has no doubt made possible manifold increase in the crop productivity but the adverse effect of these chemicals are clearly visible on the soil environment including soil physiochemical properties and inhabiting soil organisms .The present study is an attempt to find out the residual effect of inorganic and organic fertilizer input on selective soil parameter such as pH and available nitrogen which are crucial in terms of earthworm survival and abundance. Residual effects of applied organic and inorganic soil fertilizers on soil properties are found to vary based on different factors including type, rate and timing of fertilizer application and soil characteristics. Results of our investigation revealed changes in soil available nitrogen and soil pH leaving acidic effect on the vermicompost which predominantly affects earthworm survival.