Effects of soil salt-leaching terms on growth, development and yield of corn in Uzbekistan

Abstract

The issue of growing field crops in saline soils and increasing their resistance to salt remains a topical issue in terms of land reclamation. In saline soils, it is important to increase the resistance of field crops to salinity on the basis of the use of advanced technologies, as well as to pay special attention to soil reclamation. The study shows that the salinity of the soils of the planned area, the lack of saline leaching and the presence of a seasonal salt accumulation process, the problem is solved from a scientific point of view, as well as its complexity. Proper timing of saline leaching is an important reclamation measure in eliminating the negative effects of salt accumulation in saline soils. When washing the soil brine in October-November, a complete leaching of the salt was achieved, resulting in a 17.6% higher biomass than the unsalted variant of the salt. The optimal irrigation rate for corn is determined by soil moisture. The number of irrigations for the biomass was set to 5 times during the growing season. At this irrigation rate, the soil moisture did not fall below 75-80% of the limited field moisture capacity (LFMC) until the oats sprouted. During the growing season, the first watering was started when the plant produced 5-6 leaves.