Baby Vaisnow, S.S. Sengar, G.K. Jatav, Tekchand Patel and R.K. Bhagat
Department of Soil Science and Agricultural Chemistry,
Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh, 492012
Email: gouravjatav143@gmail.com
Abstract: The present investigation entitled “Evaluation of soil fertility status in Vertisol of Dhamtari block, under Dhamtari district in chhattisgarh.” was carried out for soil fertility evaluation during 2009-10 and analyzed for nitrogen, phosphorus and potassium content for delineation the fertility status in Vertisols in relation to salient physicochemical characteristics. There was Grid based surface (0-15 cm) soil samples by systematic survey were collected from 69 villages in Dhamtari block where 516 samples were identified from Vertisol. The available phosphorus and potassium was negative but non-significant correlation showed with soil pH and the positive but no significant correlation with nitrogen, the pH was positively and significant correlated with electrical conductivity. The positive and significant correlation observed between organic carbon and nitrogen. The organic carbon showed the negative and non–significant correlation with phosphorus and potassium. The nitrogen, phosphorus and potassium showed no significant correlation among them. After evaluation found as the status of available nitrogen in Vertisols were found to be low nitrogen status, available phosphorus found low to high and available potassium content generally found medium to high and only 1.75 percent soil samples tested low in available potassium. The nutrient index with respect to available nitrogen, phosphorus and potassium were also calculated on village basis. Four categories of soil fertility viz. Low- Low- Low (LLL), Low-Low-Medium (LLM), Low-Medium-Medium (LMM) and Low-Medium-High (LMH) were observed in Vertisol of Dhamtari Block.
Keywords: fertility status, major nutrients, Vertisol
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