Study of Physico-chemical Properties of Kvk, Bulandshahr Soil

Abstract

Present investigation entitled “study of physico-chemical properties of KVK Bulandshahr soil” has been undertaken during 2021-22 to closely monitor the present health status of the soil with major impetus on to manage physico-chemical health of soil so that soil fertility in this region could be restored. The soil samples taken from the depths of 0-15 and 15-30cm analyzed for their certain physico-chemical properties and analytical results revealed that soil of KVK, Bulandshahr categorized under loam, sandy clay loam and sandy loam textural classes with neutral to slightly alkaline in reaction. Bulk and particle densities were recorded respectively in range of 1.37-1.57 and 2.51-2.72 Mg m-3 and increased with depth. Porosity in surface and sub-surface soil varied respectively between 39.92-46.95 and 36.29-40.82%. According to the calculated nutrient index, soil classified as low in available N, medium in available P and low in available K. Among the secondary macronutrient, available Ca and Mg classified as high and available S classified as medium. All DTPA extractable micronutrient i.e., Zn, Fe, Cu and Mn classified as high as per the calculated nutrient index values. A highly significant and positive correlation of OC with available N, P and S was observed. Hence, based on above mentioned analytical parameter there is a requirement of nitrogen and potassium application more than the recommended dose. To avoid further decline of phosphorus, sulphur and zinc contents, application of crop based recommended dose of the nutrients must be ensured. Integrated nutrient management approach, in-situ residues incorporation, use of residues as mulch, adoption of legume-based crop rotation etc. remedial measures should be adopted which will not only help to overcome the effect of chemical cultivation but will also improve the soil health that in turn will ensure an efficient and sustained crop production.