Under conditions of typical sierozemous soils of the Tashkent region, application of pentine bentonite clay at a rate of 3000 kg/ha once every three years with irrigation during the growing season of winter wheat with irrigation regimes of 60-70-60 and 70-80-70% of LFMC, bulk soil weight decreased from 0,03 to 0,11 g/cm3, as a result, the water permeability of the soil increased from 30 m3/ha to 100 m3/ha compared to the control.