Search academic texts

Information × Registration Number 0225U004840, (0124U001517) , R & D reports Title Agro-ecological approach in growing sunflower in the conditions of climate change popup.stage_title Агроекологічний підхід в вирощуванні соняшника в умовах зміни клімату Head Tyshchenko Andrii V., Доктор сільськогосподарських наук Registration Date 19-12-2025 Organization Institute of climate smart agriculture of the national academy of agrarian sciences of Ukraine popup.description1 To identify sunflower hybrids adapted to abiotic factors and to establish the effectiveness of seed inoculation popup.description2 The analysis of the resistance of sunflower hybrids to stress was carried out using various mathematical indices and adaptability indicators. The results of the study showed that under optimal conditions, the highest number of seeds in the basket (869 seeds), the weight of 1000 seeds (70.44 g) and the biological yield (3060 kg/ha) were obtained in the variant with N40P60, while the highest oil content of 50.3% and actual yield of 2763 kg/ha were obtained in the variant with N20P30 and polycomponent inoculation (nitrogen-fixing + phosphorus-solubilising bacteria + arbuscular mycorrhizal fungi), while under limiting conditions, the highest number of seeds in a basket of 500 seeds, oil content of 42.3%, biological yield of 1173 kg/ha and actual yield of 1167 kg/ha were obtained in the variant with N40P60, and the highest weight of 1000 seeds, 47.01, was obtained in the variant with N20P30 and polycomponent inoculation (nitrogen-fixing + phosphorus-solubilising bacteria + arbuscular mycorrhizal fungi). Under optimal conditions, the highest number of seeds in the basket was 841 seeds, the weight of 1000 seeds was 69.27 g, the biological yield was 2915 kg/ha, and the actual yield was 2641 kg/ha obtained in the Niagara hybrid, while the highest oil content was obtained in the Hysun 232 IT H0 and P63LE113 hybrids – 49.7 and 49.4%, respectively. Under limiting conditions, the highest number of seeds per pod (493 seeds), weight of 1000 seeds (46.74 g), oil content (41.4%), biological yield (1153 kg/ha) and actual yield (1068 kg/ha) were obtained from the P63LE113 hybrid. Based on the results of two experiments and adaptability indicators: Niagara was found to be the most intensive hybrid, i.e. the hybrid requires optimal growing conditions; Hysun 158 IT was found to be the most stable hybrid, i.e. the hybrid is optimally suited to limiting conditions; the Hysun 280, Bella and P64LE136 hybrids are of the plastic type, i.e. they are well adapted to a variety of growing conditio Product Description popup.authors Olena D. Tyshchenko Serhii S. Stepanov popup.nrat_date 2025-12-19 Close