Studying the effect of plant raw materials on the quality of the finished haylage made of Galega orientalis when preparing it at different vegetative stages of plants. Special attention is paid to haylage in the livestock ration structure because compared to silage it has higher nutritive value and contains more dry matter, protein, sugars, macro- and microelements, as well as biologically active substances. It is worth to note that haylage rations have a beneficial impact on the animal body and the productivity of animals, which, in turn, reduces production costs. it has been proved that the green mass of Galega orientalis is a good raw material for making haylage if the technological requirements for feed preparation are met.

The authors studied the possibility of cultivating fireweed in a grass mixture with nettle dioecious in the conditions of the North-Western region of the Russian Federation. It has been stated that both plants begin to grow immediately after snowmelt. The blooming phase of nettle begins simultaneously with that of fireweed. As the plants grow and develop in a grass mixture, the suppression of fireweed is noted. In the third year of life, nettle stalks were higher than those of fireweed. During the period of research, the productivity of the grass mixture was lower than that of pure fireweed plantings by 1.3 t/ha. In the single-species option, the amount of protein and the amount of metabolizable energy were 348 kg/ha and 19.5 GJ/ha respectively, which is 42 kg/ha and 2.5 GJ/ha higher than in the grass mixture. Nettle dioecious forms dense bushes in the third year of growing. Fireweed turns out to be in unfavorable conditions: its growing energy decreases, it comes into the blooming phase earlier and its suppression from the coenosis by nettle becomes evident.

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The authors studied the ability of narrow-leaved fireweed (ivan-tea) plants to form a second slope in the conditions of the North-Western region of the Russian Federation. It has been established that the intensive use of willow-tea herbage leads to the appearance of other types of herbs in it, mainly cereals, which blacken and compact the soil. As a result of this process, the shoot-producing capacity of the roots of the narrow-leaved fireweed and, as a result, the yield of the plantation decreases.