Water Use Efficiency and Bio Mass Partitioning of Indian Mustard under Different Environment Conditions of Shivalik Foot Hills

A field experiment was conducted in Rabi 2018–19 to look at the water requirements and above-ground biomass partitioning in mustard crops growing both rainfed and irrigated. The amount of biomass produced above ground was significantly influenced by the temperature environment and the crop's efficiency in using water during the growing season. The total buildup of above-ground biomass under irrigation was demonstrated to be higher than under rainfed conditions. In both irrigated and rainfed settings, the crop's total above ground biomass was found higher on October 07 than it was on October 21 and November 6. The impact of additional meteorological factors (such as maximum and minimum temperatures) was noted to have increased the Reference crop evapotranspiration (RCET) during the PS1 and PS3 phases relative to the PS2 stage. When the mustard crop was sown in early, normal, or late conditions, the total amount of water needed was 331.06 mm, 324.90 mm, and 303.65 mm, respectively. In comparison to the cultivar Pusa Mustard 26 (NPJ113), which was sown under rainfed and irrigation circumstances, the cultivar Pusa Mustard 27 (EJ17) had a greater crop water use efficiency (CWUE).