INFLUENCE OF THE HUMIN FERTILIZER "GUMOSTIM” ON TOMATO PRODUCTIVITY

One of the most promising areas of improving the productivity of tomato and the quality of its yield is the regulation of growth using biologically active substances. Under the conditions of OAO "Penzensky Teplichny Combinat" the effect of biologically active fertilizer of humic nature "Gumostim" on the growth, development and yield of tomato was studied. It was found that the application of "Gumostim" on the tomato seedling crop significantly affected the rate of phenological phases and contributed to a more powerful development of the above-ground part of the tomato plants. The highest percentage of fruit setting was observed in tomato plants where Gumostim was applied to both seeds and plants during the flowering and fruiting phase, and the percentage of fruit setting on the second brush was higher than on the first brush. The earliest yield was obtained when the treatment of both seeds and plants with the fertilizer Gumostim in the phase of fruiting, and was 7.1 t/ha, which was 1.7 t/ha higher than the control. The share of early harvest in the total yield was 19.7 to 20.1 %, compared to 19.1 % in the control. Yields for the variants of the experiment with the fertilizer Gumostim varied from 30.9 to 35.3 t/ha, with 28.3 t/ha. The increase in yields compared to the control was from 2.6 to 7.0 t/ha. The highest productivity per plant and per square metre was in the variant of joint treatment of seeds and plants during the fruiting phase, 4.41 g and 20.99 g respectively, which was 1.0 g more and 4.75 g more than in the control. In the same variant there were the highest indicators on the chemical composition of tomato fruits. The dry matter content was 7.6 %, sugar - 2.6 %, ascorbic acid - 26.8 %.