Formation of the area of the leaf surface of plants of agricultural cultures depends on the mass of the root system during its mycorization

Abstract

Goal. To establish the influence of the mass of the root system during its mycorrhization on the formation of the area of leaves of agricultural crops. Methods. Field, laboratory and statistical. The results. The use of mycorrhiza-forming fungi and nitrogen-fixing bacteria for the presowing treatment of agricultural crop seeds has a significant effect on the formation of the root system, and therefore on the area of their leaf surface. In particular, the use for this purpose of such mycorrhizal fungi as Trichoderma harzianum RIFAI. and Tuber melanosporum VITTAD. (preparation Mikofrend, Mykovital) and nitrogen-fixing bacteria Bucillus subtilis Cohn. (preparation Florobacillin) helps to increase the mass of the root system of such agricultural crops as soft winter wheat, common corn, annual sunflower and cultivated soybean by 9.3–138.8%, which in turn helps to increase the leaf surface area by 2 .9–100.2% compared to the control. A particularly significant increase in this indicator was noted for the treatment of seeds of agricultural crops with the drug Micofrend, which is 100.2% compared to the control. There is a close correlation between the mass of the root system and the leaf surface area of agricultural crops, which ranges from +0.95 to +0.99%. Conclusions. Pre-sowing application of vesicular-arboscular and bacterial preparations Mycovital, Mycofriend and Florabacillin to the seeds contributes to the stable mass of the root system and leaf surface area of soft winter wheat, ordinary corn, annual sunflower and cultivated soybeans.