INFLUENCE OF SHORT-TERM CROP ROTATIONS WITH DIFFERENT PROPORTIONS OF SUNFLOWER ON SOIL WATER REGIME

The article analyses the features of water consumption sunflowers in short-term crop rotations. Presents results 2020‒2021 research carried out experimental field Kharkiv National Agrarian University named after V. Dokuchaev, located area Left Bank Forest-Steppe Ukraine. soil cover is represented by typical chernozem heavy loam on loess-like loam. Soil moisture was determined gravimetric technique. Sunflower calculated using balance method. sunflower yield recorded manually. purpose our to determine how rotations with different saturation affect formation regime and itself. design included five-field 0, 20, 40, 60 %. control experiment a rotation without sunflowers. It that seeds depended variants ranged from 3,21 3,57 t/ha. increase share accompanied decrease its yield, particular, due deterioration supply. highest % (2969 m3/ha). Against background reducing 40 20%, 2713 2824 m3/ha. coefficient high an lowest. At same time, this variant has (3,57 t/ha). Increasing up should occur under conditions culture agriculture. Therefore, ways efficient use are being developed.