The presence of an active symbiotic apparatus is important to support the adaptation of legume cultivation. The aim of this study was to quantify the ability of legumes (haricot, beans and vegetable soybeans) to symbiotic productivity using mycorrhiza and bioinoculants. In the field, the study focused on two main factors: variety and separate or combined (combined) use of mycorrhiza with bioinoculants. Studies on the effects of inoculants Anderiz, Rizolayne and Rizoaktiv bobovi together with and separately with the mycorrhizal drug Mykofrend were conducted during 2020-2021 in the research field of the Departments of Vegetable and Crop production of Uman National University of Horticulture.
In the course of studying the influence of compositions on the formation of the nodulation apparatus of legumes, significant differences between crops were revealed. Thus, the variation of the studied traits in legumes was noticeable and significant: in beans CV = 43; 21 and 12 %; in haricot CV = 23; 23 and 25 %; in vegetables soybean CV = 27, 19 and 20 %.
More effective symbiotic combinations were selected to improve the functioning of the nodulation apparatus of plants, namely: for vegetable beans and asparagus beans the composition of Anderiz 2 l/t + Mykofriend 1.5 l/t and separate use of Anderiz inoculant was the best; for vegetable soybeans - composition of Rizoline line preparations 2 l/t + Mykofriend 1.5 l/t and separate application of Rizoline line inoculant.
It was found that the bioinoculant Rizoaktiv bobovi more significantly increases the number of nodules on the roots, but less significantly increases their weight, while Anderiz has less effect on increasing the number of nodules, but significantly increases their weight, which is much better, because it is larger tubers are an active component of the symbiotic apparatus, and they leave biological nitrogen in the soil. Developed scientifically sound provisions will increase the efficiency of management and ensure the biologization of technologies for growing legumes