Soil fertility status of regional agricultural research station, Warangal. (Telangana)

Abstract

This study was carried out to determine the soil fertility status and preparing the soil fertility maps of the Regional Agricultural Research Station (RARS), Warangal. The total extent of farm area is 62 hactares from which 64 soil samples were identified by GPS device and soil sampling was done to a depth of 0-20 cm by using soil sampling auger. The collected soil samples were analyzed to find out their Texture, pH, EC, Organic carbon (OC), Available N, P2O5, K2O, Ca, Mg, S, B, Fe, Zn, Cu, and Mn. The soil fertility status maps were prepared using the analyzed data. The observed data revealed that soil was grayish brown in colour and sub-angular blocky in structure. The sand, silt and clay content were 35.72 ± 2.50%, 14.58 ± 0.61% and 49.69 ± 2.2%, respectively and categorized as three different classes of texture. The soil was slightly alkaline in reaction pH (7.85 ± 0.07). The electrical conductivity (Ec) is 0.67 + 0.07 dSm-1. The organic carbon percent (OC %) was 0.70 + 0.04.The available nitrogen status(209±11 kg ha-1)was low, whereas available phosphorus (49±2.2 kg P2O5 ha-1) was medium and available potassium (552±30 kg K2O ha-1) was high. The available zinc (1.24±0.23 ppm), copper (1.87±0.31 ppm), iron (24.42+4.25) and manganese (9.59 + 1.49) were sufficient.