Effect of integrated nutrient management on particle size distribution of calcareous soil

To assess the impact of organics and chemical fertilizer on particle size distribution in calcareous soil, a field experiment was conducted at Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar. The experiment was laid out in split plot design with three replications. Four level of NPK fertilizer and four level of organics were taken as main plot treatment and sub-plot treatment, respectively. Soil samples were taken from 0-15 cm, processed and analyzed for its sand, silt and clay percentages. Integrated use of compost, crop residue either alone or in combination with chemical fertilizer improved the soil structure by adding organic matter. Since, soil texture is the permanent property of soil, therefore, addition of organic and inorganic fertilizer had not any effect of soil particle size distribution and the textural class of the experimental soil remains as sandy loam.