Different Substrate on the reproduction rate of earthworms (Eudrilus eugeniae) and NPK content of its Castings
Description
In response to concerns over chemically produced crops using synthetic fertilizers, organic farming has turned to earthworm composting as an alternative. This study evaluates the effects of locally available substrates on earthworm reproduction rates and the NPK content of their castings. Conducted in a Completely Randomized Design with seven treatments replicated three times, the substrates included 75% goat manure combined with 25% of banana leaves, grass clippings, rice straw, legume leaves, cassava leaves, banana bracts, and sawdust. After 45 days, castings were collected, weighed, and analyzed. Treatments with sawdust and legume leaves showed the highest reproduction rates, while banana bracts and legume leaves yielded higher Nitrogen and Phosphorous levels. Sawdust and legume leaves produced castings with elevated Potassium. Using goat manure with legume leaves and sawdust is recommended for increased vermicomposting efficiency and enriched NPK content.