Main Article Content
The aim of our work was to study the effect of some environmentally friendly biopreparations (inosectofungicides) and mineral fertilizers on the agrochemical parameters of the soils under citrus trees. For this purpose, we started preliminary testing and afterwards, in stationary field trials, we conducted experimental work on Ukrainian-made insectofungicides – “Gaupsin” and various Spanish-made drugs - Bactofert, Bitoxybacillin, Bactocid CK. Biopreparations were used in the trial garden according to the experimental scheme. We included nitrogen, phosphorus, potassium fertilizers in the form of Russian-made NPK fertilizer, where each nutrient element was 15%. Also, we were applying Bacto Fert, a fertilizer considered by the testing scheme, in June, July, August during an active phase of the relevant disease pests. .At the beginning and end of the vegetation period, according to the test options, we took soil samples at a depth of 0-20 cm and studied the agrochemical parameters in laboratory conditions. Observation and extensive production practice confirm, that the creation of a high agro-technical background in citrus plantations and orchards, in particular, the inclusion of environmentally friendly fertilizers and their application according to agro-rules, the improvement of the composition of citrus cultivars, the rational use and protection of the soil, is one of the main basis for the increasing quality of subtropical crops and for receiving of eco-clean bio products.