FIELD EXPERIMENTS OF EFFICIENT USE OF FERTILIZER GUMISTIM ON MAIZE

The article considers the study results of the efficiency of organic fertilizer Gumistim for seeds and plants of maize. Three doses of the drug for seed processing have been studied and the optimal one has been established. The most positive effect has been obtained after Gumistim use for seed processing at the dose of 5 l/t and double perfusion of plants with 5-8 leaves by the dose 2 l/ha. Seed processing and non-root top-crossing with Gumistim had a good effect on the growth of maize. In 2012 a height of hybrid ‘Mashuk 355 MV’ increased on 8 cm, a height of hybrid ‘Beshtau’ – on 6 cm, in 2013 Gumistim use increased the height of hybrid ‘Mashuk 355 MV’ on 7,2 cm, the fertilizer increased vegetation mass of maize. During two years of study we found out that seeding processing by Gumistim (5 l/t) in the period of milky-wax maturity of grain and double non-root top-crossing (2 l/t) increased the green mass of the hybrid ‘Mashuk 355 MV’ on 4,31 t/ha or 8%. Grain productivity of the hybrid increased on 0,63 t/ha or 7,1% in average. Fertilizing ammonium nitrate before sowing maize in the dose N30 increased grain harvest on 0,78 t/ha or 8,8%. Fertilizing of maize with Gumistim is a low-cost mean to increase grain productivity. As for payback of ammonium nitrate in the dose N30 and Gumistim, the organic fertilizer is preferable. Seed and plant processing with Gumistim is economically more profitable, than fertilizing ammonium nitrate in the dose N30 in soil before sowing