RNR 15048’s Water Productivity and Water Expense Efficiency during the Kharif Season in Red Loamy Soils of Paralakhemundi, Odisha

Abstract

The farmers of Paralakhemundi primarily cultivate rice in Kharif. With a potential grain yield of 6500–7000 kg ha^-1, the selected cultivar RNR 15048 is appropriate for late sowing. Implementing the U. S. Bureau of Reclamation method, effective rainfall was determined. In both years, the field was medium-puddled because it greatly reduces water percolation loss by increasing the bulk density of soil compared to an unpuddled transplanted rice field. The rate of infiltration into the metal ring column, which was positioned in the middle of the field at a depth of 20 cm, was tracked over a period of 24 hours. In the second year, the percolation rate was reduced. Following crop harvesting, grain yield was measured, water productivity and expense efficiency were computed. These were all showing the opposite trend of the water percolation rate. Grain yield, water productivity, and water expense efficiency all increased when rice was transplanted earlier in the second year in contrast to the first. Consequently, transplanting Kharif rice during the final week of June will undoubtedly increase grain yield, water productivity, and water expense efficiency in this area.