The effectiveness of the use of biological products on sunflower crops

Abstract

An important condition for increasing the yield of agricultural crops, including sunflower, is the stimulation of plant growth and development with appropriate preparations. Substances of biological origin deserve special attention. When using plant growth stimulants for pre-sowing seed treatment, the toxic effect of pesticides is reduced, but their protective effect is not lost.
The purpose of the article is to summarize the results of the features of the influence of biological products on the productivity of sunflower hybrids depending on biological products
During the growing season, a positive effect of biological products on plant growth and development indicators was observed, this is the effectiveness of multifunctional combined preparations. Structural analysis of sunflower generative organs makes it possible to understand the structure of crop formation and find indicators that are decisive for obtaining a particular level of yield. For sunflower, determining the diameter of the basket is an important indicator, because it fluctuates within wide limits. If we take 5 linear meters of a row, on which 18-20 plants grow, then the diameter of the basket of different plants can vary from 10-12 to 20-24 cm. When determining the number of seeds in the basket, we encountered the concept of the total number and the number of filled seeds, including, for our analyses, we determined only full seeds.
The variety and preparations improve all elements of the structure, the only thing that goes beyond the general picture is the mass of 1000 seeds, which, although it changed, but these changes were small in scope. A particularly important element of the characteristics of sunflower products are the quality indicators of oilseed raw materials. In our experiment, we studied two physical indicators (volumetric mass (nature) and seed huskiness). It is on these indicators that we can obtain the difference that will characterize the quality of oilseed raw materials.
To determine the key strategies for optimizing the technologies for growing sunflower hybrids, a review of the existing literature on the impact of biological products on the formation of yield and yield structure indicators and seed quality was conducted. According to the indicators studied, it can be concluded that the highest yield was obtained for the Rimi 2 hybrid using the Mycofriend biological product, which ranged from 2.91 to 3.32 t ha-1. According to the structural elements, the best indicators were also obtained for the use of biological products for the Sumiko and Rimi 2 hybrids.