Abstract

In several developing countries bagasse is one of the major source of bio fertilizer and animal feed production. About 25 million tonnes of bagasse are available every year but 60 –75 % of dry matter of bagasse acquires in the form cellulose and hemicelluloses and its digestibility is very poor because of the presence of lignin. It is regarded as a cheap substrate, collected at the site of processing and constant supply generated within the sugarcane industry. Trichoderma harzianum T22 produce ligno cellulolytic enzyme which is used to break the indigestive compounds and help earthworm to easily digest food matters in the bagasse. In the current research three different groups each group had three different combinations of the composting beds with the size 3L×2B×1H were prepared. The first group had three different combinations of composting beds with bagasse and cow dung; then second group had three different combinations of composting beds with bagasse, cow dung and earthworm; finally third group had three different combinations of composting beds with bagasse, cow dung, earthworm and Trichoderma harzianum T22 were constructed and the beds were maintained at optimum temperature and pH. The presences of the minerals were analysed using standard method and heavy metals were analysed using the Atomic absorption spectroscopy at regular interval 30th, 60th, and 90th day of composting respectively. Finally, the results revels that the vermicast from Trichoderma harzianum T22 inoculated composed beds especially T3c have higher quantity of essential minerals with lesser heavy metals when compare to others. We concluded that the Trichoderma harzianum T22 plays a major role to enrich the essential minerals required for various plants growth in the vermicast.