Growth stimulants’ effects on productivity and quality indicators of apple fruits in the central part of the North Caucasus

The use of high-tech organochelate preparations, concentrated ballast-free humic fertilizers based on natural plant raw materials enhanced with chelates of trace elements and fulvic acids at the present stage of horticulture development is becoming increasingly widespread. The development of optimal regimen for their use in combination with microbiological preparations on apple trees of various varieties and in various soil and climatic conditions is a mandatory element in the technology of their cultivation. The efficiency of mineral nutrition elements’ fixation by trees increases when using growth stimulants in intensive gardening on apple trees. The use of these preparations on Idared variety apple trees leads to a significant increase in productivity indicators and commercial qualities of fruits due to photosynthetic activity stimulation; as a result, it leads to an increase in the economic efficiency of the orchard.