Stepanchenko D.A., Stepanchenko V.I., Bochkareva Yu.V., Efremova I.G., Semin D.S.

Effect of chelated micronutrients on the elements of seed productivity of grain sorghum varieties in the Volga region

As a result of the research, the effectiveness of leaf treatment of crops with chelated micro fertilizers in the formation of productivity elements of grain sorghum varieties selected by RosNIISK "Rossorgo" in the conditions of the Lower Volga region was revealed. The complex of agronomic features included the following elements of the productivity of grain sorghum: grain yield, weight of 1000 grains, panicle length, grain weight from one panicle, number of grains from one panicle. A significant effect of chelated micronutrients on the increase in the size of the signs of inflorescence length, grain weight from one panicle in the varieties Assistant, RSK Cascade and Prince was revealed. There is also a tendency to increase the number of grains from one panicle and the mass of 1000 grains of the Garant variety when spraying crops with all doses of chelated micronutrients. Leaf treatment of vegetative plants of grain sorghum with chelated micro-fertilizers had a significant effect on grain yield. The greatest increase in grain yield was revealed when processing crops of the RSK Cascade variety with zinc fertilizer up to 5.93-6.28 t/ha, as well as with a preparation with calcium up to 6.03-7.65 t/ha. The grain yield of the Assistant variety increased to 4.95-6.80 t/ha (21.3-66.7% higher than the control), the Garant variety when treated with both preparations increased to 7.43-9.85 t/ha, the excess of the control variant was 15.7-53.4%.

Keywords: SORGHUM, VARIETY, CHELATED MICRO FERTILIZERS, BIOMASS PRODUCTIVITY AND YIELD, MASS OF 1000 GRAINS, INFLORESCENCE LENGTH, GRAIN WEIGHT AND NUMBER OF GRAINS FROM ONE PANICLE, GENERATIVE SIGNS