Utilization of Different Types of Substrates for the Production of Earthworm Biomass through Vermiculture

  • S. Patrabansh Research Centre for Applied Science and Technology, Tribhuvan University, Kirtipur Kathmandu

Abstract

Vermiculture and vermicomposting technology contributes towards eficient conversion of bio -waste intosmell-less, handable and readily available product for plant growth. Three different substrates namely sericulture wastes, Populous deltoides leaves and Eupatorium adenophorurn plants were used for vermiculture. The earthworm used for the experiment was Eisenia foetida. The experiment was carried out for 75 days after the inoculation of earthworms. The number of earthworms and cocoons were counted by hand sorting method at every 15 days interval; weight of earthworm biomass was also obtained after rinsing and blotting the worms. The cocoons were found released within 15-days in the substrate after the inoculation. Maximum number of cocoons were released by E. foetida  in sericulture waste (239+14) followed by P. deltoides (222+8.3) and E. adenophoturn (8+2.9) during the experimental period.The hatchlings from the cocoons were observed after one month of inoculation where the substrate was sericulture waste and P. deltoides. The maximum percentage of hatchlings was observed in sericulture waste (320%) followed byP. deltoides (105.72%) and E. adenophonm only 60%. Similarly, maximum earthworm biomass increase during the period was 252.29 % in sericulture wastes, followed by P. deltoides (96.56%).