The realisation of the genetic potential of sunflower hybrids under the influence of feeding conditions

The use of microfertilisers against the background main fertiliser helps to increase efficiency using nutrients mineral fertilisers and soil by plants, which ensures an in yield improvement quality indicators grown crop. purpose study was establish influence crop nutrition conditions select highly productive hybrids (NK Diamantis, SI Kupava, NK Neoma) for specific climatic through formation their productivity. Field studies were conducted during 2018-2019 on typical low-humus chernozems Chernihiv region. programme provided laying a three-factor field experiment, (factor A) options (Factor B), foliar top dressing C) examined phases 4 8 sunflower leaves with Ecoline Boron, Nertus Bast Boron products. Sunflower under are Neoma. Studies showed that most Kupava hybrid maximum indicator option application N36R56K108S28 + N23 (in 1 l/ha) – 3.46 t/ha. fat content seeds determined morphobiological features options. microelements had positive effect hybrids, allowed obtaining (5-6 leaves) plants 51.1%. oleic acid identified added N27R42K81S21 77.2%. Due containing boron, this polyunsaturated can be increased, improving seed oil. highest oil yield, according calculations performed, obtained N36R56K108S28+N23 hybrid, amounted 1.64 tonnes per hectare