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Solubilization of low-grade rock phosphate by spent wash and its effect on germination, yield and P uptake by sorghum as a fodder crop

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Title Solubilization of low-grade rock phosphate by spent wash and its effect on germination, yield and P uptake by sorghum as a fodder crop
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Creator Kiran Kumari and Phogat, V.K.
 
Subject rock phosphate, germination, yield and P uptake by sorghum , fodder crop.
 
Description Not Available
For manufacture of P fertilizer a high grade quality rock phosphate (>30% P 2 O 5) is required. 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. 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 (6.8xl0 10 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 P solubilized, increased with increasing rate up to RP:SW::1:20 and thereafter, decreased.
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Date 2019-12-13T05:06:06Z
2019-12-13T05:06:06Z
2012-01
 
Type Article
 
Identifier Kiran Kumari and Phogat, V.K. 2012. Solubilization of low-grade rock phosphate by spent wash and its effect on germination, yield and P uptake by sorghum as a fodder crop.Journal of the Indian Society of Soil Science 60: 244-248
Print ISSN: 0019-638X Online ISSN: 0974-0228
http://krishi.icar.gov.in/jspui/handle/123456789/29007
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Soil Science