Assessment of Physico-chemical Properties of Soil from Different Blocks of Theni District, Tamil Nadu, India

An assessment of Physico-chemical properties of soil from different blocks of Theni district, Tamil Nadu carried out 2022. The prime objectives of this study were to carry out the physico-chemical properties of soil at different depths of various sites of Andipatti, Theni and Bodi Blocks of Theni District in the state of Tamil Nadu for assessing the availability of macro-nutrient present in soil of selected locations. Soil samples were collected with depth of 0-15 cm, 15-30 cm and 30-45 cm respectively. Soil textural classes were sandy loam. It clearly indicated that soil has good Water Holding Capacity (39.60 to 44.93%) and good physical condition, Bulk Density (0.938 Mg m-3 to 1.365 Mg m-3). Particle Density (2.124 Mg m-3 to 2.866 Mg m-3). % Pore Space (42.143% to 48.118%). The pH of soil is slightly acidic to neutral in nature (5.517 to 6.687) and the Electrical Conductivity (0.121 to 0.229 dS m-1) was suitable for all crops. Organic carbon ranged from medium to high (0.17 to 0.48%). These soils have low Nitrogen (127 kg ha-1 to 252 kg ha-1) in all villages. Phosphorus (9.74 kg ha-1 to 17.8 kg ha-1) content is Medium at eight locations and low at one location. Potassium (82.03 kg ha-1 to 164.26 kg ha-1) is low to medium. Exchangeable calcium (6.26 cmol (p+) kg-1 to 10.26 cmol (p+) kg-1) and Magnesium (1.93 cmol (p+) kg-1 to 5.13 cmol (p+) kg-1) are very sufficient in this soil. There is an including awareness of the need to pay greater attention in the role of macronutrients enhancement in the soil for good soil health and proper nutrition of plant so as to attain optimum economic yield.