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Effect of stocking density and food quality on the growth and fecundity of an epigeic earthworm (Eisenia fetida) during vermicomposting

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Abstract

Physico-chemical characteristics of the feed and optimum worm density are important parameters for the efficient working of a vermicomposting system. Overcrowding of worms can affect the efficiency of a vermicomposting system even if all other parameters have been optimized. This article reports the effect of stocking density and feed quality on the growth and fecundity of Eisenia fetida under laboratory conditions. The feed mixtures contained cow dung and textile mill wastewater sludge in different ratios. Three feed mixtures and five stocking rates (1, 2, 4, 8, and 12) were tested for 12 weeks. The results showed that E. fetida growth rate was faster at higher stocking densities; however, biomass gain per worm was faster at lower stocking densities. Sexual maturity was attained earlier at higher stocking densities. Growth rate was highest in 100% cow dung at all the stocking densities when compared to textile mill wastewater sludge containing feed mixtures. A worm population of 27–53 worms per kg of feed was found to be the most favorable stocking density.

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Authors and Affiliations

  1. Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India

    V. K. Garg, Priya Kaushik & Y. K. Yadav

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  1. V. K. Garg
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  2. Priya Kaushik
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  3. Y. K. Yadav
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Correspondence to V. K. Garg.

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Garg, V.K., Kaushik, P. & Yadav, Y.K. Effect of stocking density and food quality on the growth and fecundity of an epigeic earthworm (Eisenia fetida) during vermicomposting. Environmentalist 28, 483–488 (2008). https://doi.org/10.1007/s10669-008-9173-5

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  • DOI: https://doi.org/10.1007/s10669-008-9173-5

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