Эффективность подкормок йодом и вермикомпостом при выращивании огурцов в Якутии

Abstract

The article presents the results of studies to determine the optimal doses of iodine when growing cucumber in the conditions of Yakutia. The experiments were carried out in an unheated greenhouse of the Oktemsky branch of the Yakutsk State Agricultural Academy (Central Yakutia). The research program included the study of the effect of foliar feeding of iodine in doses of 5, 10, 15, 20 drops per 10 liters of water and studying the effect of liquid vermicompost produced from cattle manure on the growth and development of cucumber productivity. In this case, the effect of different doses of fertilizers on the agrochemical composition of soil and cucumber fruits was studied. When studying growth and development, it was found that the plants with 5 drops of iodine per 10 liters of water had the best indicators for leaf area. In terms of the number of leaves, 15 drops turned out to be effective, which exceeded the control group by 22.8%. By the number of flowers, the maximum number of 5.5 pieces was noted in the II experimental group where iodine supplementation was 10 drops. In terms of plant height, no significant difference between the groups was found. When studying the yield of cucumber, the maximum values were established in the I and IV experimental groups which exceeded the control group by 36.7 and 46.9%, respectively. When studying the content of nitrates in the fruits of cucumber, it was found that feeding 5 drops of iodine reduces the rate of nitrates by 29.63%. It was also found that the difference in the agrochemical composition of soils in almost all experimental groups was insignificant. Thus, during the studies, the optimal rate of iodine application per 10 liters of water was determined during the cultivation of cucumbers in the conditions of Central Yakutia and amounted to 5 and 10 drops. Keywords: FERTILIZERS, EFFICIENCY, PRODUCTIVITY, CHEMICAL COMPOSITION, CROP, GROWTH, PRODUCTIVITY, VEGETABLE GROWING