An Asian Journal of Soil Science

M. K. Inayat ¹, H. M. Aamir ², T. Tarence ¹, M. Abid ¹, S. Muzamil ¹

Affiliations
1 Department of Soil and Environmental Sciences, College of Forestry, San Higginbottom Institute of Agricultural Sciences and Technology, Deemed University, Allahabad (U.P.), IN
2 Department of Soil and Environmental Sciences, College of Forestry, San Higginbottom Institute of Agricultural Sciences and Technology, Deemed University, Allahabad (U.P.), IN

Abstract

Mussorie rock phosphate in an incubation study for 60 days was evaluated for extractable (Olsen’s) P release on sandy loam soil with a slightly alkaline reaction using different PSM’s with and without FYM. Treated soil was incubated at a temperature of 28±2° C maintaining water holding capacity at 50%. Soil samples were drawn at 15, 30, 45 and 60 days. Olsen’s P increased substantially up to 45 days and at 60 days of incubation there was a decrease in the extractable P and this decrease in the FYM treated soil was low. Among the different PSM’s the A. awamori irrespective of the application of FYM maintained higher extractable P during the whole incubation period than P. straina or B. polymyxa.

Keywords

Mussorie Rock Phosphate, PSM, FYM, Olsen’s P.

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