National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Phosphorus is perhaps, amongst all the plant nutrients, the one with the most limited bioavailability in soils (approximately 6% of total soil P is readily available (Bray’s & Olsen’s P). 80 % of phosphorus is fixed by primary minerals, precipitate, adsorbed or organically complex form. Phosphorus fertilizer is usually applied in excess of plant requirement and accumulates in soils. As soils are complex and diverse chemical, biochemical and biological systems, strategies to access recalcitrant soil P are often inefficient, case specific and inconsistently applicable in different soils. Under acidic condition, amendment (pressmud & lime) increases the availability of phosphorus. Organic matter application in soil decreases the Al-P, Fe-P &Ca-P in soil and increase available P in soil solution. The application of phytase in combination with manure substantially improves soil biological activities as well as better nutrient supply to crop. Finding a near universal or at least widely applicable solution to the inefficiency in agricultural P use by plants is an important unsolved problem that has been under investigation for more than half a century.
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