The article presents the results of scientific research on the influence of term of sowing and plant density on the field germination and survival of sunflower plants of mediumearly hybrids in the Right Bank Steppe of Ukraine. The influence of sowing terms and weather conditions on the field germination of sunflower seeds and the productivity of medium-early hybrids was established. All studied hybrids of sunflower have the highest field seed germination due to the content of productive moisture. In average years of research most productive moisture in 0-10 cm soil layer was in the first term sowing – when warming it at a depth of earnings seeds 5–6 ℃. The highest indices of field germination of sunflower seeds were recorded for the first sowing period when the soil temperature at the depth of seed placement warm up to 5-6 ℃ in the hybrid LG 55.82 - 92.5%, in LG hybrids 54.85 - 91%, LG 56.32 - 87.1%, Forward - 86.2%. According to three years of research, average hybrid survival was high and reached 96.3-92.0%
sunflower hybrids, sowing, plant stand density, productive moisture, field germination, survival, yield
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