10.1186/2251-7715-2-21

Organic manure production from cow dung and biogas plant slurry by vermicomposting under field conditions

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  • Anoop Yadav1,
  • Renuka Gupta2,
  • Vinod Kumar Garg*3,
  1. Department of Environmental Science, Central University of Haryana, Mahendergarh, India
  2. YMCA University of Science & Technology
  3. Guru Jambheshwar University of Science and Technology

Received: 2013-05-23

Accepted: 2013-10-14

Published in Issue 2013-10-31

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Yadav, A., Gupta, R., & Kumar Garg, V. (2013). Organic manure production from cow dung and biogas plant slurry by vermicomposting under field conditions. International Journal of Recycling of Organic Waste in Agriculture, 2(1). https://doi.org/10.1186/2251-7715-2-21
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Abstract

Background

Vermicomposting is a biological process which may be a future technology for the management of animal excreta. This study was undertaken to produce vermicompost from cow dung and biogas plant slurry under field conditions. To achieve the objectives, two vermicomposting units containing cow dung (CD) and biogas plant slurry (BPS) were established, inoculated with Eisenia fetida species of earthworm and allowed to be vermicomposted for 3 months.

Results

After 3 months, the vermicompost was harvested and characterized. The results showed that the vermicompost had lower pH, total organic carbon (TOC), organic matter (OM) and carbon/nitrogen ratio (C/N ratio) but higher electrical conductivity (EC), nitrogen, phosphorous and potassium (NPK) content than the raw substrate. The heavy metal content in vermicomposts was higher than raw substrates.

Conclusions

During vermicomposting, the CD and BPS were converted into a homogeneous, odourless and stabilized humus-like material. This experiment demonstrates that vermicomposting is an environmentally sustainable method for the management of animal excreta.

Keywords

  • Cattle dung,
  • Vermicompost,
  • Eisenia fetida,
  • Heavy metals,
  • C/N ratio
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