Bulletin Samara State Agricultural AcademyBulletin Samara State Agricultural Academy1997-32252782-4225Samara State Agrarian University50919Research ArticleINFLUENCE OF COORDINATION COMPOUNDS OF MICRONUTRIENT ELEMENTS ON COTTON PLANT GROWTH AND YIELDPirakhunovaF. N.Candidate of Biological Sciences, Associate Professor of the Department «Medical and Biological Sciences»Farida.piroxunova@mail.ruAbzalovA. A.Candidate of Biological Sciences, Professor of the Department «Medical and Biological Sciences»akmal.38@yandex.ruTurakulovA. A.Dean of the faculty of «Agrologistics and Business»termizdau@agro.uzTashkent Pharmaceutical InstituteTermez Branch of the Tashkent Agrarian University1502202051232923112020Copyright © 2020, Pirakhunova F.N., Abzalov A.A., Turakulov A.A.2020The aim of the research is increasing the viability and stability of seeds of various cotton varieties in unfavorable soil and climatic conditions of Uzbekistan. Trace elements with different ligand compounds effect favorably on cotton boll bursting. Cobalt-34 facilitates the cotton boll bursting by 28% in comparison with the control. The copper stimulating effect on early maturity of cotton boll is 14.5-26.5%, in control one - 1.6%. Seed soaking seed before sowing takes place and cotton fertilization during budding contributed to more intensive growth and greater productivity. The yield of cotton in the control was 33.1 C/ha, in experimental versions - 37.5-39.3 C/ha. Processing of seeds with trace elements before sowing activates seed germination, accelerates the phenophase start and leads to early cotton boll bursting (up to 32%) compared to the control. Secondary seed tillage with compounds of cobalt and copper of different ligands nature increases the yield to 6.2 C/ha due to reducing the early fall of cotton boll. Under the influence of trace elements, the hydrolytic breakdown of proteins increases. Copper-12 and cobalt-34 24 hours later after seed soaking accelerate the breakdown of proteins, which have 11 and 12 electrophoretic albinotic bands against 13. In these variants, the breakdown of albinotic substances into simpler ones (amino acids, ammonia, etc.) contributes to the germination of cotton seeds. After the second day of soaking cotton seeds in all variants, there is a quantitative decrease in electrophoretic protein bands especially in ones containing Copper-12 and cobalt 8. Seed soaking for a period of 72 hours accelerates the breakdown of proteins from 13 to 7 electrophoretic lbinotic bands, while there is increased seed germination. Soaking cotton seeds for more than 24 hours reduces the quality of the seed, increases the breakdown of protein substances that are vigorously spent on cotton germination, which makes difficult to sow, damaging a large number of seeds. 24-hour soaking of cotton seed is recommended to get early and good shoots.processingseedscottontrace elementscompoundsобработкасеменахлопчатникмикроэлементсоединения[Кариев, А. Поглощение и потребление хлопчатником и некоторыми лекарственными растениями азота из мочевины и карбамидоформальдегидных удобрений (КФУ) в различных почвенных условиях / А. Кариев // Материалы V съезда общества почвоведов и агрохимиков Узбекистана. - 2010. - С. 160-163.][Абзалов, А. А. Влияние координационных соединений микроэлементов на продуктивность хлопчатника / А. А. Абзалов // Вестник аграрной науки Узбекистана. - 2006. - № 2 (24). - С. 7-10.][Зикиряев, А. Физиология и биохимия хлопчатника : монография / А. Зикиряев. - Ташкент : Наука и технологии, 2010. - С. 135-148.][Зикиряев. А. Особенности обменных процессов в плодоорганах хлопчатника : монография / А. Зикиряев. - Ташкент, 2011. - С. 121-128.][Нуритдинова, Ф. Р. Физиолого-биохимическое изучение плодообразования новых перспективных сортов хлопчатника / Ф. Р. Нуритдинова, Ф. Н. Пирохунова, Ф. А. Джураева // Биологическое разнообразие мирового генофонда хлопчатника - основа фундаментальных и прикладных исследований : материалы международной научной конференции. - 2010. - С. 34-37.][Джураева, Ф. Влияние новых регуляторов на рост, развитие, плодообразование различных сортов хлопчатника / Ф. Джураева, А. Зикиряев // Эффективное использование земельных ресурсов и проблемы улучшения их биологического, экологического и мелиоративного состояния : материалы республиканской практической конференции. - 2009. - С. 125.][Джураева Ф.А. Влияние диацетатмоноэтаноламина на рост и развитие различных сортов хлопчатника // Доклады АН РУз. - 2010. - № 1. - С. 5-8.]