European Journal of Molecular & Clinical Medicine

The resource that grows agricultural products is the soils of this country and will
always need to be registered and evaluated. Soil quality assessment is a comparative
assessment of soil quality and natural fertility when agricultural crops are at a moderate level.
Soil valuation is carried out taking into account the soil properties and characteristics, which
in many respects are related to crop yields. The assessment of soil quality takes into account
the main properties and natural conditions of soils: genetic origin of soils, mechanical
composition, humus content, salinity, erosion, stonyness, gypsum and other natural factors.

The resource that grows agricultural products is the soils of this country and will always need to be registered and evaluated. Soil quality assessment is a comparative assessment of soil quality and natural fertility when agricultural crops are at a moderate level. Soil valuation is carried out taking into account the soil properties and characteristics, which in many respects are related to crop yields. The assessment of soil quality takes into account the main properties and natural conditions of soils: genetic origin of soils, mechanical composition, humus content, salinity, erosion, stonyness, gypsum and other natural factors.

The article elaborates on the possibility of increasing cotton yields by improving the agrophysical, agrochemical and microbiological properties of fallow soils by deep tillage at different depths between rows of cotton grown on irrigated fallow soils in the southern regions of the Republic of Uzbekistan. In variants 4 and 5 of the experiment, an increase in cotton yield was observed as a result of improved agrophysical, agrochemical and microbiological properties of the soil when cotton was cultivated at depths of 26-28 cm and 30-32 cm, respectively. In the experiments, when the cotton row spacing was loosened to a depth of 30-32 cm, the mass volume of the soil in the drive and subsoil layers decreased by 0,02-0,03 g/cm3, porosity by 2,0-2,1%, water permeability by 100-120 m3/ha increase in; humus content was higher by 0,004%, nitrogen content was higher by 0,007%, and phosphorus content was higher by 0,006%; As a result of the rapid development of the cotton root system, the efficiency of moisture and nutrient utilization has increased, and an additional 4-5 ts/ha of cotton has been proven to be obtained. The best results are obtained by cultivating cotton at a depth of 30-32 cm between rows. additional yield was obtained.