The effect of deep softeners on irrigation, salt washing and cotton yield on soils with heavy mechanical composition

¹ Bukhara Institute of Natural resources management of National Research University of Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, 32, Gazli shokh ave., Bukhara, 105009, Uzbekistan
² National Research University Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME), Kary-Niyaziy ave., Tashkent, 100000, Uzbekistan

^* Corresponding author: bekhruz_atamurodov@mail.ru

Abstract

In the article, studies were conducted on the economy of saline soils quality saline washing and irrigation water by deepening of medium coarse soils with a mechanical content of melioration, plaster, salinity in the conditions of Bukhara region. In experiments, basically, there were three ways to soften the field: plowing in the first experiments at 35 cm, plowing in the second experiment at 60 cm, and plowing in the third experiments at a depth of 80 cm. During the experiments, in the first variant of the studies, the norm of salt washing was set to 6480 cbm/ha, in the second variant to 5210 cbm/ha and in the third variant to 5010 cbm/ha. First of the studies in irrigation of Bukhara 102 varieties, that is, in the control variant to 5821 cbm/ha, in the second variant to 5284 cbm/ha and in the third variant to 5100 cbm/ha. Watered 5 times during the season. At the same time, high quality cotton was harvested due to the increase in cotton yield to 0.39 t/ha in the variant 2 and 0.129 t/ha in the variant 3 compared to the control, and the land reclamation situation improved. the amount of chlorine ion in the active layer is 0.003 in the variant 2 compared to the control. The amount of dry residue decreased by 0.058% in the variant 2 and the amount of dry residue by 0.063% in the variant 3.