EFFECTIVENESS OF TREATMENT OF SUNFLOWER HYBRIDS WITH MICROBIOLOGICAL INOCULANTS AND FERTILIZERS IN THE STEPPE ZONE OF UKRAINE

Keywords: biofertilizers, bacterial preparation, seed preparation for sowing, foliar feeding, yield

Abstract

Purpose: To determine the effect of treating sunflower hybrids with microbiological inoculants and foliar feeding (one-time) with fertilizers in the critical phase of development (6-8 leaves) on plant productivity in the steppe zone of Ukraine. Method: Conducting field experiments using randomized replicates to evaluate the effects of biological preparations and fertilizers on sunflower plant productivity indicators to provide a statistical basis for quantitative differences between the studied variants. Results. The results of productivity and yield structure indicators obtained during two-year studies on testing 2 fertilizers (Mikrokat, p. and Mikro-Mineralis, RK), 3 microbiological preparations (Cidox Pro, Florabacillin suspensions, NitroMais, RN) and 1 inoculant (BINOC/Cornex, p.) on 3 sunflower hybrids are presented, (ES Rosalia with a medium- early maturity group and belonging to the moderately intensive type, medium-early intensive hybrid 5053L SU and medium-early moderately intensive high-oleic hybrid LID 5038X) with a density recommended for a zone of insufficient moisture (50 thousand plants/ha). These preparations have a high potential for intensification of reproductive processes, which contributes to increased yield (formation of a larger number of baskets, creation of their increased diameter, and increase in grain size) by using them as a biological catalyst due to the formation of a developed root system, better and faster absorption of nutrients, increased immunity and protection against pathogens. Conclusions. The use of a combination that includes seed treatment with both inoculant and microbiological preparations with foliar fertilization with fertilizers ensures optimization of the crop structure due to the growth of productive achenes on plants of each of the studied sunflower hybrids.

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Published
2026-05-30
Section
MELIORATION, ARABLE FARMING, HORTICULTURE