“…Especially from the second fortnight of February due to rise in temperature, the crop faces drought during flowering and pod formation stages which eventually resulted in poor yield of black gram. In order to evade the terminal moisture stress in rice fallow black gram, supplemental irrigation would be useful at 30–35 DAS (Pre flowering) to augment the yield [ 3 ]. In montmorillonite expanding clay, surface irrigation is determent to the crop as inundation of water leads to wilting of the crop.…”