The article deals with the effect of soil tillage and mineral fertilizers on the change of water-physical properties of the soil in irrigated gray-brown (chestnut) soils in the Western region of Azerbaijan. It was determined that in the N60P90K60 variant cultivated at a depth of 8-10 cm compared to the control (without fertilizer) variant, the moisture in the 0-30 cm soil layer at the beginning of vegetation was 9.60-10.10%, and the total porosity increased 3.76-4.54% and the bulk density decreased by 0.10-0.12 g/cm3, and the moisture content increased by 5.50-6.60%, and the total porosity increased by 4.88-5.68%, and the bulk density 0.13-0.15 g/cm3 decreased at the end of the vegetation. In the 0-30 cm soil layer in the 13-15 cm deep area conducted a disk trowel, in the N60P90K60 variant, moisture increased by 9.1-9.5%, total porosity increased by 3.39-4.15% and bulk density by 0.09 -0.11 g/cm3 decreased, at the begining of the vegetation and at the end of vegetation, the moisture content increased by 6.70-7.70%, the total porosity increased by 5.30-6.43%, and the bulk density decreased by 0.14-0.17 g/cm3. Observing the highest indicators in the N60P90K60 variant in the soil layer of 0-30 cm in the ploughed field at a depth of 20-22 cm, at the begining of the vegetation moisture by 10.90-11.60%, and total porosity increased by 3.40-5.60% ,and the bulk density decreased by 0.09-0.15 g/cm3, at the end of the vegetation, the moisture content increased by 9.70-11.80 %, and the total porosity increased by 5.66-7.56%, and the bulk density 0.15-0.20 g /cm3 decreased. Numerous studies have determined that the use of different soil tillages in the cultivation of agricultural plants has a significant impact on the maintenance of moisture in the soil, nutrient regime, physical properties of the soil, phytosanitary condition, the height and growth and finally, productivity of plants