GPS AND GIS BASED SOIL FERTILITY MAPS OF RANITAL KVK FARM AND IDENTIFICATION OF SOIL RELATED PRODUCTION CONSTRAINTS
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 51
Abstract
A detailed soil fertility status of the Ranital Krishi Vigyan Kendra (KVK) farm was investigated during 2014-15 and soil related crop production constraints were identified for proper utilization of farm land. Total 58 numbers of geo-referenced (GPS based) composite surface soil samples (0-15cm) were collected from 6 blocks of KVK farm located at Ranital in Bhadrak district of Odisha, India. Soils were analyzed for mechanical composition, pH, EC, OC, available N, P, K, S and micronutrients like B, Fe, Mn, Cu, Zn. About 91% soils are found to be loamy sand in nature. Around 41 percent soils are neutral and 59 percent are slightly alkaline in reaction. However, electrical conductivity (EC) remains within safe range for crops (<0.48 dSm-1). SOC varies from 2.3 to 13.7 g kg-1 with a mean value of 5.2 g kg-1.The mean available soil N, P, K and S was found to be 106.6, 15.9, 42.69 kg ha-1 and 2.34 mg kg-1 respectively. The mean hot water extractable Boron, DTPA extractable Fe, Mn, Cu and Zn was found to be 1.14, 29.8. 4.35, 0.93 and 0.16 mg kg-1 respectively. Fertilizer recommendation for different crops has been suggested on the basis of soil test values and suitability. Thematic maps were prepared for each soil parameter using ArcGIS package. The soil fertility maps provide the readymade source of information about soil fertility status and serve as the decision making tool for successful raising of field crops and development of orchards.
Authors and Affiliations
SUBHASHIS SAREN
Keywords
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