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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(10): 1934-1938
DOI: https://doi.org/10.20546/ijcmas.2018.710.222


Solubilization of Rock Phosphate by Spent Wash Solubilization of Phosphorus from Low-Grade Udaipur Rajasthan Rock Phosphate Using Spent Wash from Faizabad, Utter Pradesh, India
Balu Ram*, Ramawatar Meena and Raj Kumar Meena
Department of Soil Science & Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, India
*Corresponding author
Abstract:

High-grade rock phosphate (P2O5>30%) is essential for manufacturing P fertilizers. only 39% is of high grade which could meet hardly 35-40% of the demand of P fertilizers (Indian Bureau of Mines 2014). In India, there is a predominance of low grade rock phosphate reserves and out of 260 million ton only 15.3 million ton is of high grade quality. The consumption of apatite and rock phosphate in 2011-12 was about 3.96 million tonne. Rock phosphate is usually inert in alkaline and calcareous soils. While exploring the options available for increasing the solubility of low grade RP, it was thought that the spent wash which is highly acidic (pH: 3.5-4.5) and generated as a waste in huge quantities (6.8xl010 litres/year) in the country, may be utilized for this purpose. Spent wash has considerable manurial potential. The extent of P-solubilization from low-grade Udaipur rock phosphate (RP) by spent wash (SW) was studied by mixing RP and SP in different ratios i.e. 1:1, 1:2, 1:5, 1:10, 1:20, 1:40, 1:60, 1:80 and 1:100. The amount of phosphorus solubilized, increased with increasing rate up to RP: SW::1: 20 and thereafter, smaller increase solubilized phosphorus.


Keywords: Phosphorus fetilizers, Rock phosphorus, Spent wash
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How to cite this article:

Balu Ram, Ramawatar Meena and Raj Kumar Meena. 2018. Solubilization of Rock Phosphate by Spent Wash Solubilization of Phosphorus from Low-Grade Udaipur Rajasthan Rock Phosphate Using Spent Wash from Faizabad, Utter Pradesh, India.Int.J.Curr.Microbiol.App.Sci. 7(10): 1934-1938. doi: https://doi.org/10.20546/ijcmas.2018.710.222