SORPTION STUDIES ON P, K, Cu, Mu, zn, S AND B IN VERTISOL, INCEPTISOL AND ENTISOL SOILS
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Date
01-01-00
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI - 413 722, DIST.AHMEDNAGAR, MAHARASHTRA, INDIA
Abstract
Sorption behaviour of P, K, Cu, Mn, Zn, S and B were studied for representative soil orders viz., Vertisol (Otur), Inceptisol (Sawargaon) and Entisol (Pargaon) soils of C.C. Farm of M.P.K.V., Rahuri. All these soils were alkaline in reaction, calcareous in nature and clay to sandy clay loam in texture. Equilibration studies revealed that at low levels of equilibration, maximum amount of each element was sorbed on all the soils. Vertisol soil was found to possess high sorption capacity, followed by Inceptisol and Entisol soil. To assess the balanced nutrition of Pearl millet (Jaint Bajra) a pot culture study was conducted in three soils representing low to high sorption capacity. The results showed that the dry matter yield as well as per cent relative yield were significantly influenced by the balanced nutrition applied on the basis of sorption capacity of soils. The magnitude of N, P, K, Zn, S and B limiting the yield of test crop were estimated in all three soils. The clay, CaC03 Organic carbon, cation exchange capacity were found to be the main important soil factors which govern the sorption behaviour of Vertisol (Otur), Inceptisol (Sawargaon) and Entisol (Pargaon) soils of M.P.K.V., Rahuri.