Effect of mineral fertilizers on the yield of spring wheat varieties in the conditions of the Central Non-Chernozem Region

The studies were carried out in order to identify the responsiveness of five varieties spring wheat variants with applying mineral fertilizers and study specific features formation elements yield structure. work was 2019-2021 on dark gray forest heavy loamy soil Ryazan region. experiment scheme was: N0P0K0 (control); N 64 P K ; + 30 15 . Over years research, varied from 2.45 5.57 t/ha, depending growing conditions, variety. use background contributed a significant increase productivity by 1.02-1.69 t/ha. most responsive improvement nutrition Maestro, Arsey Agata, increased 48, 42 39 %, respectively, comparison control. All varieties, exception reacted positively nitrogen fertilization tillering phase (N30), increasing 0.48-0.62 supplementary RIMA, Lada, Agata used best way; addition 15, 12, 11 respectively. It revealed that under influence additional (N30) plant stand 7.3-11.2 number spikelets – 1.3-4.7 grains ‒ 0.3-12.3 grain weight per ear 0.9-21.4 %. second fertilizing booting (N15) led decrease productivity, especially Lada 7.9-9.5 Variety Maestro proved be indifferent fertilizing. data obtained will adjustment varietal technologies for cultivation wheat.