Influence of stocking density on the vermicomposting of an effluent treatment plant sludge amended with cow dung
2016
Yadav, Anoop | Garg, V. K.
This paper reports the effect of earthworm population density on the vermicomposting of effluent treatment plant sludge of a bakery industry. Four waste mixtures containing 0, 10, 20, and 30 % sludge along with cow dung with five different worm population densities were established for 14 weeks under controlled moisture and temperature conditions. The results showed that average worm biomass, growth and cocoon production were lesser at higher population densities. Sexual maturity was attained in 3rd to 5th week in all waste mixtures. Worm growth was inversely related to worm population density in the waste mixture. Results also indicated that lower worm population is favorable to worm biomass production. On the other hand, mineralization and stabilization of the waste mixtures were more at higher worm populations.
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