The method of foliar nutrition is widely used for the intensive pear crop. It balances the imbalances of nutrients in plants quickly and purposefully. It is used when the efficiency of the nutrient absorption by the plant root system is reduced, due to adverse weather conditions and reduced soil condition. Using this method, there is a rapid supply of nutrients at the time of the greatest need at certain stages of plant growth, especially in the case of trace elements. Mono and multi component fertilizers are used for this purpose. The introduction of these or other fertilizers is carried out throughout the entire vegetation.
Results of the study on pear tree yield and fruit quality of Osnovianska variety on Quince A rootstock grown on dark gray podzolized soil in Right-Bank Forest-Steppe, depending on the application of foliar fertilizing with nitrogen and DripFert complex fertilizer with optimal soil provision with main macro elements, are shown.
The study was conducted in the pear tree garden of Uman National University of Horticulture with tree allocation scheme of 5x3 m. The experimental design includes variants with foliar application of carbamide (0.5 % solution) and DripFert complex fertilizer of different contents of N, P2O5, K2O and trace elements. The first spraying with carbamide was carried out 10 days after flowering and next two spraying procedures were at intervals of 10-14 days. DripFert water-soluble fertilizer was applied in the phase of bud pushing (18-18-18 +МЕ), pink budding (18-18-18+ МЕ and 13-40-13+МЕ) and fruit growth (18-18-18+ МЕ, 13-40-13+МЕ і 5-15-40+МЕ). The liquid consumption was at a rate of 1000 l/ ha.
Foliar fertilizing of pear trees of Osnovianska variety with DripFert complex fertilizer 18-18-18+МЕ (three time fertilizing during the growing season) provided a yield increase of 39.2 % and 13.6 % compared to the yield in absolute and production control variants. Variants with fertilizers provided an increase in the pear yield of the highest and first commercial grade (at 84.3-84.7 %).