Abstract
The georeferenced surface soil samples from Bhandara district of Maharashtra were collected using Global Positioning System (GPS) to study the variability in availability of N, P, K, S, Zn, Fe, Cu, Mn and B. The fertility maps were prepared using Geographical Information System for each nutrient. The results revealed that soil reaction is acidic to slightly alkaline (4.16 to 8.35), whereas organic carbon content varied from very low to very high (0.65 to 1.43 g kg-1). The available nitrogen ranged from 73.8 to 273.9 kg ha-1 and available phosphorus varied from 1.03 to 63.0 kg ha-1 indicating deficiency in 89.2 per cent samples. The available potassium and sulphur ranged from 112.0 to 795.2 kg ha-1 varied from 7.94 to 36.49 mg kg-1 respectively. The DTPA-Zn ranged from 0.10 – 2.60 mg kg-1 showing 58.01 per cent samples deficient while DTPA-Fe varied from 1.56 to 197.36 mg kg-1. DTPA-Mn and Cu were found to be sufficient. The nutrient indices of nitrogen (1.00) and phosphorus (1.13) were found low, medium for sulphur (2.08), high for potassium (2.75), low for zinc (1.44), medium for boron (1.82) and high for iron (2.63), copper (2.96) and manganese (2.91).
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