Carbon-to-Nitrogen Optimization for Vermicomposting Broiler Poultry Litter

The potential benefits of bioconversion of commercial broiler poultry litter (PL) to vermicompost (with Eudrilus eugeniae) were studied by optimizing the carbon-nitrogen ratio (C/N) using coconut (Cocos nucifera) coir pith (CP) and farmyard manure (FM) as co-substrate. In this experiment, after optimizing the carbon to nitrogen ratio (C/N) at the levels of 25, 30, and 35, the pre-composting of the PL followed by vermicomposting was done, and the PL and FM alone were used as the control group. After pre-composting, the earthworms (Eudrilus eugeniae) were introduced, and the vermicomposting process was continued for 90 days, and the samples were analyzed on the 45th and 90th days of vermicomposting