Vol. 12, Special Issue 12 (2023)

Author(s):
RS Talole, MU Kale and MS Supe

Abstract:
Climate change is now affecting the agriculture disastrously. The yield of crops is reducing due to erratic nature of precipitation. Protective irrigation is become inevitable for sustaining the crop productivity. In this study reference evapotranspiration, effective rainfall and crop water requirement were computed using CropWat 8.0 model. The reference evapotranspiration varies from 6.39 mm day^-1 to 3.75 mm day^-1. The Cotton and Pigeon pea crop requires at least 37.3 mm/month, 120.9 mm/month, 121.4 mm/month, 114.7 mm/month, and 18.9 mm/month irrigation water during September, October, November, December and January respectively. Peak irrigation requirement of cotton and pigeon pea was found in the month of November. There is no need of protective irrigation for soybean crop due to low irrigation requirement during Kharif season. The amount of protective irrigation for Cotton and pigeon pea requires protective irrigation in the month of October (>130 mm) followed by December (>128 mm) and November (>65 mm).