The article evaluates the effect of foliar application of such micronutrients as molybdenum and cobalt on soybean yield in the soil and climatic conditions of Western Polissya, Ukraine. The use of molybdenum and cobalt on legumes promotes the development of nitrogen-fixing bacteria on the plant’s root system. With the simultaneous use of molybdenum with cobalt, a synergistic effect of these two micronutrients is observed and the processes of additional nitrogen absorption are activated. Readily available molybdenum affects nitrogen fixation by soybean. It is an integral part of the nitrogenase enzyme, which is responsible for the fixation of molecular nitrogen in nitrogen-fixing microorganisms. Cobalt is part of cobalamin (vitamin B12) – an indispensable enzyme for the reproduction of Rhizobium and Bradyrhizobium (nitrogen-fixing microorganisms). When used foliarly, cobalt stimulates respiratory processes, which ensures active growth, accumulation and transfer of photosynthesis products in the plant. The domestically produced EnerGreen Premium MOLLIUM preparation was chosen for the research. The preparation simultaneously contains molybdenum and cobalt, with cobalt chelated by 100 percent. Research has shown that the use of the EnerGreen Premium MOLLIUM preparation contributes to an increase in soybean yield and an increase in the protein content in the grain. The greatest increase in yield was observed when the preparation was applied at a rate of 0.9 l/ha, where the yield was 3.27 t/ha, which is 27.7% more than the control. The protein content in soybean grain also increased from 37.0% to 38.6%. The range of EnerGreen Premium MOLLIUM application rates from 0.3 l/ha to 0.7 l/ha was the most effective and economically beneficial. The results of the research confirmed that the use of molybdenum and 100 percent chelated cobalt has a positive effect on the formation of the crop and the quality of soybean grain.
Author Biographies
O. V. Kedrun, National University of Water and Environmental Engineering, Rivne
Post-graduate Student
А. М. Pryshchepa, National University of Water and Environmental Engineering, Rivne
