Plant and Soil Science

Studied the question of the optimal density of standing plants parent forms of corn, as the self-pollinated lines and simple interline hybrids in areas that affect hybridization yields and their seed productivity. The research was conducted during 2014-2017 in the Right-bank Forest-steppe of Ukraine in the LLC "Agrofirma Kolos" of the Skvyra district of the Kyiv region. Field experiments included options for studying the effectiveness of the plant density of parental forms of corn: simple hybrids, Richka SV, Rushnik SV, River C (75, 85 and 95 thousand / ha), self-pollinated lines UR 9 zS, UR 331 SV, UR 12 zS 85, 95 and 105 thousand hectares). It is marked, that the formation of crop, moisture, the mass of 1000 grains and the parameters of the release of conditioned seeds are influenced by: the density of plant standing, morphological signs of parental forms and meteorological conditions that are formed during the vegetative period. It has been established that the recommended plant densities contribute to the formation of higher yields, low harvesting moisture and increased yield of conditioned seeds

corn, sowing norms, parental forms, self-pollinated lines, hybrids, seed productivity, seed moisture, weight of 1000 grains, yield of conditioned seeds, climatic conditions