Available Macro Nutrient Status and their Relationship with Soil Physico-Chemical Properties of Sri Ganganagar District ofRajasthan, India

摘要

Soil fertility evaluation of an area is an important aspect in context of sustainable agriculture production. The macro nutrients govern the fertility of soils and control the growth and yields of crops. In the present investigation Raisingh Nagar block was selected in the district Sri Ganganagar of Rajasthan and studied the available macronutrient status and their relationship with physico-chemical properties. Sri Ganganagar district have different cropping systems and irrigated by Ganga canal and Bhakhra canal tributaries. Twenty seven representative villages were chosen and four surface soil (0-15 cm) samples collected from each village and analysed for physico-chemical properties and available N, P, K, S, exchangeable Ca and Mg status using standard laboratory procedures. Results of the study indicated that soils of Raisingh Nagar block were low to medium in organic carbon. Out of 108 collected soil samples, 97% were medium in available nitrogen and medium to high in available phosphorus, potassium and sulphur, however, available Ca and Mg found sufficient.