GPS-Based Soil Fertility Mapping of Agriculture College Farm, Pune, Maharashtra, India
Tejal Pawar, Dipti Waghdhare, Sangita Shinde, Pushpalata Bhosale, Avinash Gosavi, Shraddha Wable
Asian Journal of Research in Biochemistry · pp. 57–69 · Published 13 Sep 2025
10.9734/ajrb/2025/v15i5428Abstract
Present soil survey was carried out during 2024 in College of Agriculture, Pune (Maharashtra) India by using Global Positioning System (GPS). Fertility maps were prepared with 160 geo-referenced soil samples collected by randomized method. Out of 160 soil samples, 127 samples from Agronomy Farm and 33 samples were collected from Modi Baugh and Pathology Farm by using standard soil sampling procedure and were analysed for chemical properties at College of Agriculture, Pune with an objective to assess the soil nutrient status and delineate soil fertility maps of Agriculture College farm, Pune. The pH and EC of soils of Agronomy Farm was found in between 7.63 to 8.96 (mean 8.11) and 0.20 to 0.78 dS m-1 with mean 0.41 dS m-1 respectively. The organic carbon and calcium carbonate content of the Agronomy Farm was ranged from 0.10 to 0.73 per cent with mean 0.39 per cent and 10.25 to 27.5 per cent with mean 18.53 per cent respectively. The available nitrogen, phosphorous and potassium of Agronomy Farm was found to be between 75.27 to 326.11 kg ha-1 (mean 195.31 kg ha-1), 6.57 to 60.08 kg ha-1(mean 31.82 kg ha-1) and 114.24 to 1005.76 kg ha-1 (mean 422.24 kg ha-1) respectively. The available sulphur ranged between 16.21 to 26.46 mg kg-1 (mean 21.44 mg kg-1). The soils of Modi Baugh and Pathology Farm showed pH and EC from 7.52 to 8.45 with mean 7.85, and 0.21 to 0.64 dS m-1 with mean 0.45 dS m-1 respectively. The organic carbon content and calcium carbonate ranged from 0.17 to 0.62 per cent with mean 0.32 and 8.5 to 25.5 per cent with mean 14.1 per cent respectively. The available nitrogen, phosphorous and potassium of Modi Baugh and Pathology Farm ranged from 125.44 to 301.06 kg ha-1 (mean 222.76 kg ha-1), 13.14 to 31.6 (mean 20.17 kg ha-1) and 166.72 to 919.52 kg ha-1 (mean 400.10 kg ha-1)respectively. The available sulphur in soils ranged between 18.50 to 25.39 mg kg-1 (mean 22.31 mg kg-1). Based on the GPS locations of samples and soil test results, soil fertility maps of Agriculture College Farm, Pune were prepared by using Arc-GIS 10.8.2 for soil pH, EC, OC, CaCO3, available N, P, K and S.
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