Assessment of Physico- Chemical Properties of KVK, Shahjahanpur Soil

Abstract

A study entitled “Assessment of Physico-Chemical Properties of KVK, Shahjahanpur Soil.” was carried out during 2020-21. Soil Samples collected from different depths viz. 0- 15, 15-30 cm were processed and analyzed for various physical and chemical properties. The overall quality of KVK, Shahjahanpur soil appears to be poor to medium except for certain parameters. Majority of soil samples showed moderate in hydraulic conductivity (1.8-1.8 cm/hr) and infiltration rate (2.0-6.5 cm/hr) which may be attributed due to poor OC, low porosity and high BD. A positive and significant relation was observed between HC, IR with OC and Porosity while negative correlation was found between HC, IR and Bulk density. Soil pH range between 8.13 to 8.73 at surface and all the samplers belongs to moderately alkaline range. The electrical conductivity of the surface soil ranged from 0.20 to 0.28 dSm-1. The percent organic carbon content of surface soil samples was in the range of 0.41-0.76 %. Soils of KVK, Shahjahanpur classified based on pH, EC ( 1:2 soil: water ratio), OC, HC, IR and BD were moderately alkaline to strongly alkaline , majority of soils falls under low EC (0.15-0.50 dSm-1) and low organic carbon (<0.5%), the available nitrogen of samples was in the range of 201.19 to 287.84 kg ha-1 and were in low nutrient index range (1.38 NI), the available phosphorus of samples range between 16.34 to 21.67 kg ha-1 for and falls in medium nutrient index range (2 NI) while the available potassium of samples range between 357.54 to 484.98 kg ha-1 and falls in high nutrient index range (2.67 NI). As per the nutrient status of the study area and each nutrient index level (i.e. low, medium and high), the soils of KVK, Shahjahanpur were categorized into low-medium-high (LMH) category based on available N, P and K concentrations. Ca/Mg ratio of the study area varied from 1.99-2.01 while Mg/K ratio varied from 1.20 to 2.26. Soils of study area were found in sufficient range for available Cu, Zn, Fe, and Mn.