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: Evaluation of the soil fertility status of Vertisol group of Dhamtari block of Dhamtari district in Chhattisgarh was undertaken during 2009-10. Grid based (GPS) surface (0-15 cm) soil samples by systematic survey were collected from 69 villages in Dhamtari block in such that each 10 ha area represented one sampling point and total 1450 soil samples covering all soil types out of this, 516 samples were identified from Vertisol. These samples wereanalyzed for pH, EC, organic C and DTPA-extractable Zn, Cu, Fe, Mn. The pH (soil reaction) varied from 4.70 to 7.50 with the mean value 5.89, EC ranged from 0.05 to 0.37 with the mean value 0.13 dS m-1. The variation in organic C content in sampled soils was from 0.23 to 0.83 with the mean value 0.44 %. DTPA-extractable Fe, Mn, Cu and Zn status were recorded as 4.54 to 68.70 (30.18 mg Fe kg-1), 3.72 to 59.58 (26.08 mg Mn kg-1), 0.2 to 8.78 (2.79 mg Cu kg-1) and 0.06 to 3.34 (0.68 mg Zn kg-1), respectively. Soil pH showed significant and negative correlations with DTPA-extractable Fe, Mn, Cu and Zn. EC exhibited significant and negative correlated with DTPA-extractable Mn, Cu and Zn. The organic C showed negative relationship with DTPA-extractable Fe, Mn, Cu and Zn.
Keyword: DTPA-Extractable Micronutrient, Vertisol and Fertility status
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