Abstract
The article considers the symbiotic activity of chickpeas and soybean crops depending on the action of various herbicides and fertilizers. In the field conditions of the forest-steppe zone of North Ossetia-Alania, the effect of mineral fertilizers on the symbiotic activity of promising varieties of chickpeas was studied and it was established that mineral fertilizers had a significant effect on the formation of the symbiotic chickpeas apparatus. Mineral fertilizers contributed to the increase in the average mass of nodules and their number. According to the mass of active nodules formed by Vilana soybean plants, increasing the dose of complex fertilizer Nagro to 0.5 l/ha is justified, since the mass of nodules on one plant in this variant increased in development phases. All options with the introduction of bio fertilizer Nagro for soybean crops were characterized by a significant increase in the mass of nodules in comparison with the control variant. Control variants formed more inactive nodules on the lateral roots, which were also characterized by smaller sizes.
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