International Journal of Science, Engineering and TechnologyAuthors: Feba. R. Philip, Dr Reji P.G
Abstract: The unrivalled increase in the human population has resulted in the large-scale generation of biowaste, which serves as a rich source of plant nutrients. This study aims to determine the optimal composting duration, the appropriate quantity of Eudrilus eugeniae for efficient vermicomposting, and the best distribution of biowaste during the composting process. The composting was carried out for a period of two weeks, with sampling performed at the end of the second week. The macronutrient contents—organic carbon (C), nitrogen (N), and potassium (K)—were analysed to assess nutrient enrichment. Organic carbon was determined using a carbon analyser, total nitrogen through the Kjeldahl method, and total potassium using an Atomic Absorption Spectrophotometer (AAS). The pH of the compost was found to be 7.5, indicating a slightly alkaline nature. The organic carbon content was 3.11% in compost and 3.8% in vermiwash. Nitrogen was recorded as 1.98% in compost and 2.1% in vermiwash, while potassium was 1.98% in compost and 1.95% in vermiwash. These results indicate that vermiwash contains relatively higher NPK values compared to compost manure, making it a superior biofertilizer.
