ABSTRACT

Galega orientalis Lam. refers to legumes with prevailing symbiotrophic nutrition [1]. It is an excellent nitrogen fixer. This is of particular importance to energy saving, environmental protection, and production of environment-friendly products. Under favorable growing conditions, Galega rapidly accumulates fixed biological nitrogen from the air in the roots, the amount of which increases with the age of the plants. Simonov [2] found that the nitrogen content increased from 146 to 819 kg/ha in the grass root residues of G. orientalis from the first to sixth year of life. In the research conducted by Kshnikatkina [3], it was found that for 3 years, the amount of fixed nitrogen from the air, depending on the mineral nutrition supply, varied from 275 to 650 kg/ha.