Abstract
Ecologically sustainable and economically feasible crop cultivation technologies, including application of biologically active substances, are required for formation of a consistently high and excellent soybean yield. These substances, when used in minimal doses for pre-sowing treatment of seeds and vegetative plants, provide high field germination and plant resistance to unfavorable environmental factors, promote an increase in productivity by ensuring accelerated germination of seeds, their increased germination capacity and resistance to unfavorable agro-climatic conditions of the growing season. The aim of the research was to determine the degree of influence of various combinations of biological products and treatment methods on growth processes and productivity of soybean of the northern ecotype. The influence of various types of pre-sowing seed treatment on germination energy, germination capacity and morphometric parameters of soybean shoots was studied. The biological product “Floravit” was used in the experiments in combination with rhizotorphin, seeds were treated before sowing; the germination energy, laboratory and field germination capacity were found. Also, additional treatment of vegetating plants was carried out with the biological product “Floravit”. Observations of the symbiotic activity of plants were carried out, the productivity of plants was recorded at the end of the growing season. It was found that soaking of soybean seeds in water solution of “Floravit” (concentration - 1.4 · 10-4 g / ml; consumption - 1 l / kg) with subsequent treatment with rhizorphin (consumption - 3–5 g / kg) has a growth-stimulating effect at the initial stages of plant development, promotes fast and friendly shoots. Afterwards, the plants form a more powerful symbiotic apparatus and higher productivity. The obtained results - an increase in germination energy, laboratory and field germination capacity, symbiotic activity of plants and parametres of crop yield structure indicate a fairly high efficiency of “Floravit” application.
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