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Composting of Municipal Solid Waste Using Earthworms and Ligno-Cellulolytic Microbial Consortia for Reclamation of the Degraded Sodic Soils and Harnessing Their Productivity Potential

Author

Listed:
  • Yash Pal Singh

    (Regional Research Station, ICAR-Central Soil Salinity Research Institute, Lucknow 226002, India)

  • Sanjay Arora

    (Regional Research Station, ICAR-Central Soil Salinity Research Institute, Lucknow 226002, India)

  • Vinay K. Mishra

    (Regional Research Station, ICAR-Central Soil Salinity Research Institute, Lucknow 226002, India)

  • Arjun Singh

    (Regional Research Station, ICAR-Central Soil Salinity Research Institute, Lucknow 226002, India)

Abstract

The management of municipal solid waste (MSW) and the reclamation of degraded sodic soils are two serious environmental and socio-economic problems experienced by the developing nations. To overcome these problems, a technology has been developed for the composting of MSW using earthworm and ligno-cellulolytic microbial consortia and its utilization for the sustainable reclamation of degraded sodic soils, as well as for harnessing their productivity potential. To standardize on-farm composting under aerobic conditions, the field experiment consisted of seven treatment combinations, replicated thrice with municipal solid waste (MSW) sole and in combination with agricultural wastes (AW) treated with earthworms ( Eisenia foetida ) and consortia of lingo-cellulolytic microbes such as Aspergillus spp., Trichoderma spp. and Bacillus spp. It was conducted at ICAR-CSSRI, Research farm, Shivri, Lucknow, India. The results revealed that the thermophilic phase was achieved at 60 days of composting and thereafter the temperature decreased. Marked changes in pH and EC were found and they changed from acidic to neutral. The reduction in total C, from initial to maturity, varied from 4.45 to 14.14% and the increase in total P and total K from 4.88 to 88.10% and 12.00 to 35.71%, respectively. The nutrient-rich quality compost based on the lowest C: N ratio, highest nutrient contents, microbial population (bacteria and fungi) and enzymatic activities was obtained from a mix of MSW and AW, enriched with earthworms and consortia of lingo-cellulolytic microbes. The efficacy of this enriched compost was evaluated for the reclamation of sodic soils and their potential for sustaining productivity of the rice-wheat cropping system was harnessed through combined application with a reduced dose of gypsum. The results indicated that the application of on-farm compost @10 t ha −1 in conjunction with a reduced quantity of gypsum (25% GR) significantly ( p < 0.05) improved the physico-chemical and microbial soil properties, and enhanced productivity of the rice-wheat cropping system over the use of only gypsum. This study proved that on-farm compost of MSW and its utilization for the reclamation of degraded sodic soils can be an alternate solution for useful disposal and management of MSW, thereby improving the health and productivity of sodic soils.

Suggested Citation

  • Yash Pal Singh & Sanjay Arora & Vinay K. Mishra & Arjun Singh, 2023. "Composting of Municipal Solid Waste Using Earthworms and Ligno-Cellulolytic Microbial Consortia for Reclamation of the Degraded Sodic Soils and Harnessing Their Productivity Potential," Sustainability, MDPI, vol. 15(3), pages 1-18, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2317-:d:1048093
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    References listed on IDEAS

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    1. Mariangela Diacono & Francesco Montemurro, 2015. "Effectiveness of Organic Wastes as Fertilizers and Amendments in Salt-Affected Soils," Agriculture, MDPI, vol. 5(2), pages 1-10, April.
    2. Xin Wu & Liheng Ren & Lin Luo & Jiachao Zhang & Lihua Zhang & Hongli Huang, 2020. "Bacterial and Fungal Community Dynamics and Shaping Factors During Agricultural Waste Composting with Zeolite and Biochar Addition," Sustainability, MDPI, vol. 12(17), pages 1-13, August.
    3. Elango, D. & Thinakaran, N. & Panneerselvam, P. & Sivanesan, S., 2009. "Thermophilic composting of municipal solid waste," Applied Energy, Elsevier, vol. 86(5), pages 663-668, May.
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