Efficiency of the irrigation norm for winter wheat and soy varieties in the typical land of Uzbekistan
Аннотация
Abstract In this article, in the conditions of grassland soils of Andijan region, pre-irrigation varieties of winter wheat Tanya, Vershina, Kalym, Andijan-4 have a high yield when the soil moisture is irrigated in the order of 75-75-75% relative to the limit field moisture capacity. In particular, the average yield of soybeans was 66.0 quintals (q)/ha from Tanya, 69.5 q/ha from Vershina, 69.2 q/ha from Kalym and 67.2 q/ha from Andijan-4. and Oyjamol cultivars received high yields when irrigated in the order of 70-75-65% of the pre-irrigation soil moisture limit, including the average yield of 26.8 q/ha from Tomaris and 27.0 q/ha from Oyjamol. Water consumption of winter wheat and soybean varieties was determined, the minimum water consumption for the cultivation of one quintal of grain was 75.45-75% of the soil moisture before the threshold field moisture capacity, which is 58.5 m 3 /sec in “Kalym” variety, 59.6 m 3 /sec in “Andijan-4” variety, pre-irrigation soil moisture of soybeans cultivated as a secondary crop in 70-75-65% of the field moisture capacity 81.3 m 3 /sec in the variety “Oyjamol” and 86.4 m3/sec.