The issues of optimising the phosphorous nutrition of corn are becoming increasingly relevant due to trends in the increasing cost of mineral fertilisers and meteorological risks in the post-sowing period. The purpose of the study is to determine the economic efficiency of liquid complex fertilisers applied during corn sowing as the main source of phosphorus and as an additional element in the nutrition system. A field experiment was performed, which included options for applying LCF, separate application of granular mineral fertiliser, joint use of LCF and granular fertiliser, and tank mixtures of LCF with zinc and a bacterial product based on Pseudomonas fluorenses to implement the set tasks. It was identified that the use of LCF in sowing contributes to a better supply of young plants with phosphorus, and, as a result, to the development of a more productive cob. Therewith, the use of LCF exclusively as a food source in doses up to 50-60 L/ha does not allow for realising the inherent potential and leads to a lack of grains from the cob compared with the option with full nutrition. The highest yield was obtained in the version using granular fertiliser and 60 litres of liquid complex fertiliser mixed with a bacterial preparation, while the yield increase relative to the version without granular fertiliser was 32% (2.8 t/ha). Separate application of liquid complex fertiliser under no circumstances provided a result comparable to the application of granular fertiliser, but the addition of 25 L/ha of LCF to the main application of granular fertiliser allowed obtaining a yield increase of 1.3 t/ha. The results obtained prove the high efficiency of the liquid form of starter fertiliser when applied on light granulometric soils and should be considered when planning resource-saving technology for growing corn in an area with a high degree of meteorological risks

Ukraine has a developed agricultural sector of the economy, where agriculture accounts for 10.4% of the gross domestic product. The relevance of the subject is due to the fact that agricultural production, which is of strategic importance for the country, is very sensitive to ongoing climate changes. Therewith, the crop industry is already undergoing a process of adaptation to the consequences of climate change and agrometeorological factors, which is manifested in the expansion of the range of cultivated crops. The purpose of this study was to predict the adaptability of heat-loving agricultural crops by their yield in various natural and climatic zones of Ukraine. In the course of the research, such methods as analysis, synthesis, factor analysis, correlationregression, and mathematical-statistical were used. Based on the results of the conducted studies, the expediency of considering climate change to obtain high yields of both conventional agricultural crops and heat-loving ones, which were not typical for Polissia and Forest-Steppe, is proved. Based on the analysis of the dynamics of crop yields, it is identified that it is advisable to reorient agricultural production to the cultivation of heat-loving crops – corn, sunflower, soy, and rapeseed in the Forest-Steppe, which in recent years give the same or slightly higher yields than in the south of Ukraine. Growing these crops in the Polissia zone is unprofitable – the yield is quite low, so in these regions, it is worth continuing to grow conventional crops (cereals, legumes, vegetables, potatoes). The established dependences of crop yields on climatic and agrometeorological factors allowed identifying a complex of factors that play a major role in the formation of the yield of specific crops. The developed crop yield models based on multiple correlation allow for predicting it. The results of the study can be useful in planning and optimising the activities of agricultural enterprises, and agriculture in general, in various natural and climatic zones of Ukraine, as a strategic branch of the economy