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The optimal parameters of agrophysical soil properties are important for ensuring favorable conditions for plant development. This study found a significant impact of various tillage technologies on the agrophysical state of ordinary chernozem. The long-term use of the no-till technology decreased soil density in the arable and root-inhabited (0-60 cm) layers. Before sowing winter crops using the no-till method, the soil had the best porosity level - more than 57%. Due to the reduction of agricultural machinery passes through the field, the structural aggregates increased to 52.6%, which was 12.7% more than during the dump treatment. Improving the agrophysical state of the soil with the no-till technology had a significant impact on the water permeability of the soil and its water regime. When using the no-till technology, the best agrophysical soil properties in the arable layer had a decisive influence on the yield of the field crops. In 2006-2018, the no-till technology provided a steady yield gain of 3.1-5.2 kg / ha or 6.5-38.2%. The long-term use of the no-till technology ensured the conservation of the soil, demonstrating the environmental benefits of this technology. The optimal agrophysical properties of ordinary chernozem when using the no-till technology ensured the effective use of moisture, improved the field crop productivity, and enabled more effective conservation of arable land in the arid conditions of the Rostov region. Keywords: agrophysical soil properties, porosity, water permeability, productivity, no-till technology

Agrophysical Properties of Ordinary Chernozem as the Basis of Stability of Modern Agriculture