FORMATION OF CORN PRODUCTIVITY DEPENDING ON THE USE OF MODERN BIOLOGICAL FERTILIZERS IN THE FOREST-STEPPE RIGHT BANK

Abstract

Corn is one of the oldest agricultural crops. It is one of the most productive cereals of universal purpose, which is grown for food, feed and technical purposes. In the countries of the world about 20% of corn grain is used for food needs, 15-20% for technical needs, 60 - 65% for fodder for farm animals. In our country, corn is the most important fodder crop. At its expense, livestock is provided with concentrated feed, silage and green mass. The most valuable feed is corn grain, which contains 9-12% protein, 65-70% carbohydrates, 4-8% oil, 1.5% minerals. 100 kg of it contains 134 feeds, units, up to 8 kg of digestible protein. In the current conditions of agricultural production, biological fertilizers and drugs with different mechanisms of action on plants are in increasing demand among agricultural producers. Particular attention is paid to biological products that promote the active settlement of root and root zone mycorrhizal fungi and saprophytic rhizosphere bacteria, one of which is Melanoriz and complex fertilizers based on potassium humate type Gumifrend, which are created with additional content of beneficial microorganisms and their products. These biological preparations ensure the development of soil biota, increase soil fertility, while activating its suppression against phytopathogens, increase crop yields, including corn. The research was conducted with the use of modern promising biological products, manufactured by BTU Center, which were used for pre-sowing seed treatment and application to foliar fertilization. Based on the obtained results, it was found that the treatment of seeds before sowing with Melanoriz with a rate of 3 l / t and the application of humic fertilizer Gumifrend (0.5 l / ha) and its combination with plant growth regulator Stimpo (25 ml / ha) provided the best plant productivity parameters. Under these growing conditions, the maximum plant height in the experiment was 236.1 cm, leaf surface area 44.6 thousand m 2 / ha, grain weight from the beginning of 152.6 g, weight of 1000 grains 286.6 g and grain yield 11, 75 t ha-1.