For crop planning, it isrecommended to use actual data on total evaporation and the probability of their values in individual years. The amount of evaporation depends on the crop, variety, level of agricultural technology, the presence of moisture in the soil and climatic conditions. For most vegetable crops, soil moisture should be around 80% HB at the start of the growing season and 70% thereafter. When optimizing agrotechnical measures, water and food regimes, vegetable crops provide the formation of 50-60 t/ha of mid-ripening seedling tomatoes during a single harvest and 60-80 - with multiple harvesting, 50-60 - seedless tomatoes, 35-40 t/ha - sweet pepper and 70-80 t/ha - late cabbage.