Vol. 3, Issue 5 (2018)
Effective utilization of corn cob for vermicompost making using Eudrilus eugeniae
Author(s): Sakthivel Vellaikkannu, Rajeshwari Nallusamy, Vinoth Mohan, Saralabai Viswanathan Chathlingathe
Abstract: India produced 14.7 million tonnes of maize from 7.4 million hectares of land with an average yield of 1963 kg/hectare of which 2.94 million tonnes of corn cobs are annually produced as waste. Vermicomposting is the bioconversion of organic wastes using earthworms. In this study, the role of earthworm in converting corncob into a valuable product is assessed. The powdered corn cob was mixed with cow dung and earthworm Eudrilus eugeniae and left for vermicomposting for 30 days. After 30 days, the vermicompost was collected and the physico-chemical parameters were analyzed. Organic carbon and the pH were reduced significantly at 30 days of vermicomposting. Eudrilus eugeniae is found to be the best choice for converting corn cob into nutrient rich vermicasting in a short period of time (30-day). Thus, the recycling of agrowastes through vermitechnology reduces the problem of accumulation of agrowastes. Vermicastings are found to contain nutrients like N, K, Ca, Mg and P.