RUDN Journal of Agronomy and Animal IndustriesRUDN Journal of Agronomy and Animal IndustriesВестник Российского университета дружбы народов. Серия: Агрономия и животноводство2312-797X2312-7988Peoples’ Friendship University of Russia named after Patrice Lumumba1951910.22363/2312-797X-2019-14-4-306-318Crop productionРастениеводствоResearch ArticleEffects of Gibberellic acid, micronutrient fertilizer and Calcium nitrate foliar fertilizer on growth and yield of tomato Solanum lycopersicum L. cultivated in VietnamВлияние гибберелловой кислоты, микроудобрения и внекорневого удобрения - нитрата кальция на рост и урожайность томатов Solanum lycopersicum L., выращиваемых во ВьетнамеLeVan TrongЛеВан ЧонгDoctor of Sciences in Biology, Faculty of Natural Sciencesдоктор биологических наук, факультет естественных наукbbt.9895@gmail.comBuiBao ThinhБуйБао ТхиньSchool of Natural SciencesШкола естественных наукbuibaothinh9595@gmail.comHong Duc UniversityУниверситет ХонгдыкFar Eastern Federal UniversityДальневосточный федеральный университет15122019144VOL 14, NO4 (2019)ТОМ 14, №4 (2019)30631829122019Copyright ©; 2019, Le V.T., Bui B.T.Copyright ©; 2019, Ле В.Ч., Буй Б.Т.2019Le V.T., Bui B.T.Ле В.Ч., Буй Б.Т.http://creativecommons.org/licenses/by/4.0https://agrojournal.rudn.ru/agronomy/article/view/19519In this study, we present the experimental results which evaluate the influence of Gibberellic acid GA3, micronutrient fertilizer and Calcium nitrate Ca(NO3)2 foliar fertilizer on the growth and yield of tomato cultivar NHP11 cultivated in a net house located in Thanh Hoa province, Vietnam. The experiment including 8 formulas was laid out in a randomized complete block design (RCBD) with three replications. In treatments with the application of GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer, plants were observed to grow better than the control (via some indicators such as plant height, leaf area index, number of flowers per plant, effective flower rate, number of fruits per plant, average fruit weight per plant). The yields differed due to different formulas on tomato. Results indicated that the highest yield was recorded at 50.73 tons ha-1 when the combination of GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer was applied in F8, followed by the record of 47.31 tons ha-1 in F6 (in presence of GA3 and Ca(NO3)2 foliar fertilizer), 46.55 tons ha-1 in F5 (in presence of GA3 and micronutrient fertilizer), 45.79 tons ha-1 in F7 (in presence of Ca(NO3)2 foliar fertilizer and micronutrient fertilizer). The yields of tomato in F2, F3, F4 when treated with supplemented separately GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer respectively were higher than those of the control (39.90 tons ha-1) but lower than the yield in mixed formulas. Results show that the treatment combination of GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer can promote the growth and yield of tomato.Приведены экспериментальные результаты, оценивающие влияние гибберелловой кислоты GA3, микроудобрения и внекорневого удобрения - нитрата кальция Ca(NO3)2 на рост и урожайность томатов сорта NHP11, выращенных в закрытом грунте. Исследования проводились в провинции Тханьхоа, Вьетнам. Эксперимент, включающий 8 вариантов, был составлен в рандомизированном полном блочном дизайне с тремя повторностями. При обработке с применением GA3, микроудобрения и внекорневого удобрения Ca(NO3)2 наблюдали более высокие показатели роста и развития растений (высота растения, индекс листовой поверхности, количество цветков на растение, эффективная норма цветения, количество плодов на растение, средняя масса плодов на растение) по сравнению с контрольным вариантом. Показатели урожайности томата отличались по вариантам эксперимента. Наивысшая урожайность 50,73 т/га была обнаружена в варианте F8 при применении комбинация GA3, микроудобрения и внекорневого удобрения Ca(NO3)2, в F6 с использованием GA3 и внекорневого удобрения Ca(NO3)2 урожайность составила 47,31 т/га, в F5 с использованием GA3 и микроудобрения - 46,55 т/га, в F7 с использованием внекорневого удобрения Ca(NO3)2 и микроудобрения - 45,79 т/га. Урожайность томатов в вариантах F2, F3, F4 при обработке с использованием GA3, микроудобрения и внекорневого удобрения Ca(NO3)2 в отдельности была соответственно выше, чем в контроле (39,90 т/га), но ниже, чем в комбинированных вариантах. Полученные результаты показывают, что комбинация GA3, микроудобрения и внекорневого удобрения Ca(NO3)2 может способствовать росту и урожайности томатов.tomatoSolanum lycopersicumGAmicronutrient fertilizerCa(NO) foliar fertilizergrowthyieldSolanum lycopersicumGACa(NO)томатгибберриловая кислотамикроудобрениявнекорневая подкормкаудобрениенитрат кальцияростурожайность[Costa JM, Heuvelink E. The global tomato industry. In: Heuvelink E. (ed.) Tomatoes. Boston, USA: CABI; 2018; p. 1-26. doi: 10.1079/9781780641935.0000][Beecher GR. Nutrient content of tomatoes and tomato products. 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