STUDY OF THE EFFECT OF PRE-SOWING COMPLEX AND MONONUCLEATE VARIOUS BIOPREPARATIONS ON THE HEIGHT, PRODUCTIVITY AND GRAIN QUALITY OF SPRING WHEAT
The article presents the results of vegetation studies on the effect of mononucleate different bacterial drugs and mycorrhizae, as well as the results of the combined inoculation of mycorrhizal fungus (Glomus intraradices strain 8), in combination with various bacterial preparations: Flavobacterium, Mizorin, and KL-14-and 2Р-5 height and productivity of plants of spring wheat varieties Leningrad 6. Monoinoculation promoted an increase in height, dry weight, and grain productivity of spring wheat plants. With the introduction of one biological product, an increase in the total nitrogen content in the grain was noted by 15-43% (rhizobactinia), by 10% (mycorrhiza). Inoculation based on arbuscular mycorrhiza stimulated an increase in the phosphorus content in grain by 21%, and with bacterial preparation KL-14 by 12% relative to the control. The complex inoculation represented by the joint inoculation of mycorrhizal fungus with various rhizosphere bacterial preparations had an ambiguous effect on the results. In the embodiment of rhizobia with a bacterial Flavobacterium a substantial increase in grain productivity, which amounted to 19%, the rest of the options significant changes in productivity of grain and other. The use of biopreparations Flavobacterin and Mizorin in combination with arbuscular mycorrhiza increased the nitrogen content in the grain by 11-15% and potassium by 13-16% relative to mycorrhiza monoinoculation - 10% (nitrogen) and 6% (potassium). The combined use of associative rhizobacteria and arbuscular mycorrhiza did not contribute to an increase in the phosphorus content relative to the control with mycorrhiza.