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E3 Journal of Scientific Research

E3 Journal of Scientific Research Vol. 2 (3) pp. 047-051, September 2014; © E3 Journals; ISSN 2276-9919

Nutrient composition of rock phosphate enriched compost from various organic wastes

Sohail Ahmed Qureshi1 * , Ambrin Rajput1 , Mehrunisa Memon2 , Muhammad Azam Solangi1
1 Agriculture Research Sindh Tandojam, Agriculture Department, Government of Sindh, Pakistan
2 Sindh Agriculture University Tandojam
*Corresponding Author E-mail: ambrin2004@gmail.com
Accepted 11 September 2014


In this study, rock phosphate enriched composts was prepared by mixing rock phosphate with Farm Yard manure (FYM), Poultry manure (PM), Sugar press mud (SPM) with effective microorganism (EM). For this, an experiment was carried out to determine the concentrations of total C, total N, P, K, Fe, Zn, organic matter (%) and C:N ratio of composted manures. Laboratory results of fresh manure data showed that the total N varied in the order: green manure > FYM > poultry manure > pressmud; total P in the order: pressmud > FYM > poultry manure > green manure while total K was in the order: green manure > poultry manure > FYM > preemud. The results showed that the extractability of elements of composted manure revealed that there was a slow reduction in pH (7.34), EC (3.29) and narrowing of C:N ratio (18.32). There was gradual increase in macro (total NPK) and micronutrients (Fe and Zn). Thus, rock phosphate enriched compost could be an alternative and viable technology to utilize low grade rock phosphate

Keywords: Rock Phosphate; Raw organic material; (FYM, PM, SPM, EM); Compost enriched rock phosphate; Nutrient contents

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