Heba M.A. Khalil, Elham M. Aref and Amal E. Hanna( 2009). In Vivo Evolution Of Rock Phosphate Solubilizing Potential In CompostingAustralian Journal of Basic and Applied Sciences, 3(4): 4601-4609, 2009
ISSN 1991-8178
Abstract: Some of the Egyptian soils are deficient in organic matter, nitrogen, available phosphorus and micronutrients. The chemical fertilizers have been intensively used as alternative source of organic fertilizer. Therefore preparing compost from bagasse mixed with rock phosphate and inoculated with. viride and A. niger fungal strains for phosphate dissolving and farmyard manure, not only used as fertilizers but also increase the availability of the fertilizer in compost. Qualities of the produced composts using the fungal activators were compared with those obtained with farmyard manure and physical, chemical and microbial community structure during the composting process were determined.
To evaluate the resulting compost as organic phosphatic fertilizers, cowpea seeds were planted in pots and fertilized with different types of the obtained composts. The factors taken in consideration to evaluate the quality of composts by estimating plant dry weight, NPK uptake and determination of microbial change in soil. It was found that, inoculation of pile with microbial activators increased compost quality by increasing C/N ratio, phosphorus uptake and content, nitrogen content, potassium content compared with non-inoculated pile, as well as decreasing in pathogenic bacteria. Macro- nutrients uptake i.e NPK and total microbial in rhizosphere increased with the application of the inoculated pile.
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