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The present paper discusses the role of earthworms in recycling of sugar industrial wastes. The wastes generated from sugar industry are pressmud, bagasse, bagasse fly ash, sugar cane trash, sugar beet mud, sugar beet pulp, molasses etc. These wastes when mixed with other organic substrates become ideal mixtures for growth of earthworms. These wastes if stored in open field’s causes contamination in the environment and may cause several diseases in public health. But the governments have been unable to tackle the menace of solid waste pollution due to dearth of appropriate technologies, finance and space. Therefore, environment friendly and cost effective technologies for nutrient recycling or remediation of wastes are being advocated as an alternative means for conserving and replenishing natural resources of the ecosystems. Vermicomposting is one such technology that synergises microbial degradation with earthworm’s activity for reducing, reusing and recycling waste materials in a shorter span of time. Earthworm technology can convert sugar industrial wastes into valuable fertilizing material. The final product (vermicompost) produced during the process of vermicomposting is nutrient rich organic fertilizer with plant available nutrients such as nitrogen, potassium, calcium and phosphorus. In the present study an attempt has been made to document the role of earthworms in reuse of sugar industry waste.
A single dose of 10, 25 and 50% (weight percentage) of the soil collected from sugar-processing plant was added to loose sand and brown soil. A four –year - pot experiment was set where the following were cultivated, in turn: corn, buckwheat, spring wheat and corn. It was observed that the content of phenolic acids in soil grew proportionally to the dose of soil introduced and it was positively correlated with the contents of C-org, N-org, available P, K and Mg forms, floatable forms and sorption capacity, as well as the plant yield and its nitrogen and magnesium contents. However, the content of phenolic acids in brown soil did not show a linear dependence on the sediment dose, it correlated negatively with the amount of C fraction most susceptible to biological oxidation and with microbiological respiration activity, yet positively with the concentration of potassium available in soils, yield and its nitrogen content.
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