МИНЕРАЛЬНОЕ ПИТАНИЕ ЯРОВОЙ ПШЕНИЦЫ ПРИ РАЗЛИЧНЫХ НОРМАХ ВЫСЕВА НА СЕРЫХ ЛЕСНЫХ ПОЧВАХ ПРЕДКАМЬЯ РЕСПУБЛИКИ ТАТАРСТАН

Abstract

The article summarizes the results of experiments on the study and development of methods for optimizing mineral nutrition for spring wheat on the soils of the Kama region of the Republic of Tatarstan at different seeding rates in order to increase the yield and quality of grain. Field research was carried out in 2022 on the territory of Agrobiotechnopark LLC of Kazan State Agrarian University, located in the Pre-Kama zone of the Republic of Tatarstan. The object of the study was spring wheat of the Yoldyz variety, cultivated in conditions of gray forest soil. For the experiment, a soil of gray forest heavy loam was selected, containing 3.0 (according to Tyurin) units of humus, 176 mg of mobile phosphorus, 109 mg/kg of exchangeable potassium (according to Kirsanov) and 27.3 bases per 100 g of soil in a layer of 0-20 cm. The saturation of the bases was 87.7%, and the pH of the salt extract solution was 5.6. For the experiment, a series of four seeding rates was applied - 4, 5, 6, and 7 million seeds per hectare for each nutrient background. Several plots with different nutrient backgrounds and consistent seeding rates were randomly located. The total area of the plots was 60 m2, and the accounting area was 50 m2. Scheme of the experiment: I background - without fertilizers (control); II background - calculated background for the planned grain yield of 3 tons / ha; III background - calculated background for the planned grain yield of 4 tons/ha. The optimal seeding rate was 5 million/ha for the fertilized variety and 4 million/ha for the natural variety and led to an increase in yield by 1060-1200 kg per hectare compared to the control. With a seeding rate of 6 million/ha on the II and III nutrient background, the gluten content increased by 1.8% compared to the natural background.