Impact of the seeding rate on the yield and its quality of the new sunflower hybrids

Abstract The effect of different seeding rates, providing the density of 40, 60, and 80 thousand plants/ha, on the yield and its quality of the new sunflower hybrids of VNIIMK breeding (Immi, Arneb, Gorfild) was studied at the V.S. Pustovoit All-Russian Research Institute of Oil Crops (VNIIMK) (Krasnodar) in 2019-2020. The purpose of the research is to determine the effect of different seeding rates on the elements of plant productivity, yield, oil content of seeds, and oil yield of promising sunflower hybrids. The sunflower hybrid Arneb appeared to be the most stable in terms of productivity at different seeding rates. It has a high tolerance to its increase even under a water deficiency. Hybrids Immi and Gorfild are more susceptible to plant thickening. Their productivity is decreasing in unfavorable water conditions.

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