Preparation of Geo-spatial Soil Fertility Map of KVK Farm, Gariyaband, Chhattisgarh, India

Abstract

The present study was carried out during the year, 2023-24 at KVK farm Gariyaband, Chhattisgarh with the objectives to study the soil available macro and micro nutrients status of KVK farm Gariyaband. GPS based surface soil samples (0-15) at random sampling of studied area in each plot with the goal to create a GPS-based soil fertility map. The soil samples were analysed by standard procedures with respect to pH, EC, OC, macronutrients (N, P, K, S) and micronutrients (Fe, Mn, Cu, Zn, and B). The pH of soils of research farm varied from 6.02-7.13 with a mean of 6.45. It indicates that the pH of the soil is in the slightly acidic to neutral range. The electrical conductivity of the soil ranged from 0.10-0.25 dSm-1 with a mean of 0.14 dSm-1. This depicts that all of the samples were in fair range (<1.0 dSm-1) with no harmful effect of soil salinity. The organic carbon ranged from 0.24-0.66 %, with mean value 0.43 %. The available nitrogen ranged from 150.44-188.16 kg ha-1, with a mean of 170.95 kg ha-1. The available phosphorus varied from 13.38-31.63 kg ha-1 with mean of 22.60 kg ha-1. The available potassium varied from 335.10-440.72 kg ha-1, with mean of 389.94 kg ha-1. The available sulfur ranged from 22.5-53.48 kg ha-1, with mean value of 35.55 kg ha-1. Among micronutrients, the available iron, manganese, zinc, copper and boron varied from 8.84-35.90 mg kg-1 (mean 20.39 mg kg-1), 6.20-27.74 mg kg-1 (mean 17.79 mg kg-1), 0.60-1.44 mg kg-1 (mean 0.86 mg kg-1), 1.04-2.74 mg kg-1 (mean 1.85 mg kg-1), and 0.52-0.98 mg kg-1 (mean 0.71 mg kg-1), respectively. All the samples were found under sufficient fertility classes for micronutrients.