Efficacy of Novel Phosphatic Fertilizer Derived from Sagar Rock Phosphate
2014
Adhikārī, Tapana | Kundu, S. | Biswas, A.K.
In the present investigation nano rock phosphate particles were prepared (top down approach) and characterized by using modern tool of nano-science and nano-technology to utilize the vast deposits of rock phosphate of India. Subsequently a pot culture experiment was conducted with maize crop in four diverse soils (Vertisol, Alfisol, Aridisol and Inceptisol) to test the efficacy of nano rock phosphate as a phosphatic fertilizer. Experimental results clearly indicated relatively higher yield response to nano-rock phosphate in all the soils as compared to micron sized rock phosphates. Further, the results suggested that crop utilization of P from nano rock phosphate was at par with that of P from single superphosphate (SSP) in Vertisol and Inceptisol, while the yield response to P from nano rock phosphate was marginally lower than to P from SSP in Alfisol and Aridisol. Rock phosphate nano particles could be utilized as a source of potential phosphatic fertilizer in the cultivation of crops.
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