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  • Title: Studies on production and characterization of enriched urban waste composts and their influence on crops productivity.
    Author: Salakinkop SR, Hunshal CS, Gorogi PT, Basavaraj B.
    Journal: J Environ Sci Eng; 2008 Jan; 50(1):83-8. PubMed ID: 19192932.
    Abstract:
    Enriched compost produced with use of municipal solid wastes (MSW) recorded narrow C:N ratio at the end of decomposition period than municipal solid wastes decomposed without enrichers. To enhance the decomposition rate, quality of municipal solid wastes and enrichers/amendments are found very significant for production of compost. Nutrient content particularly nitrogen, phosphorus and potassium could be enhanced with addition of organic amendment/enrichers. Response of different crops for composts produced with addition of different enrichers like night soil, 25% distillery sludge and bio-fertilizers (Azospirillum sp and Bacillus sp) was conspicuous compared to the compost derived from municipal solid wastes alone with respect to increased growth and yield of crops. Among the enriched composts, night soil enriched compost significantly increased the response of potato and groundnut crops. According to farmer's opinion obtained with matrix scoring, chemical fertilizers and sheep penning are cheaper compared to pit compost or urban solid waste compost. While chemical fertilizers are considered to have adverse effects on soil more than pit compost, tank silt, sheep penning and urban solid waste. Weed infestation is associated more with urban waste than other sources. For dry land, agriculture urban waste could be useful due to good moisture holding capacity. Crop yields could be improved under low rainfall condition whenever pit compost or urban solid waste is used.
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