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 Lumumba1954110.22363/2312-797X-2020-15-1-30-39Crop productionРастениеводствоResearch ArticleEffect of humic acid and naphthalene acetic acid on vegetative growth and fruit quality of tomato plants Lycopersicon esculentumВлияние гуминовой и нафталинуксусной кислоты на вегетативный рост и качество плодов томатов Lycopersicon esculentumSulimanAhmad AliСулиманАхмад АлиPhD student, National Research Centreаспирант кафедры растениеводства и плодоовощеводстваa_elsagheer2006@yahoo.comAbramovAlexandr GennadevichАбрамовАлександр ГеннадьевичCandidate of Agricultural Sciences, Associate Professor, Department of plant and vegetable productionкандидат сельскохозяйственных наук, доцент кафедры растениеводства и плодоовощеводстваgal4959@yandex.ruShalamovaAnna AlekseevnaШаламоваАнна АлексеевнаCandidate of Agricultural Sciences, senior researcher, Department of plant and vegetable productionкандидат сельскохозяйственных наук, старший научный сотрудник кафедры растениеводства и плодоовощеводстваa6685025a@yandex.ruBadranAntar MahmoudБадранАнтар МахмудPhD student, Agroengineering Department, Agrarian and Technological Instituteаспирант агроинженерного департамента, Аграрно-технологический институтdr_antar_mahmoud@yahoo.comNational Research CentreНациональный исследовательский центрKazan State Agrarian UniversityКазанский государственный аграрный университетDesert Research CenterЦентр по исследованию пустыньPeoples’ Friendship University of RussiaРоссийский университет дружбы народов15122020151VOL 15, NO1 (2020)ТОМ 15, №1 (2020)303917032020Copyright ©; 2020, Suliman A.A., Abramov A.G., Shalamova A.A., Badran A.M.Copyright ©; 2020, Сулиман А.А., Абрамов А.Г., Шаламова А.А., Бадран А.М.2020Suliman A.A., Abramov A.G., Shalamova A.A., Badran A.M.Сулиман А.А., Абрамов А.Г., Шаламова А.А., Бадран А.М.http://creativecommons.org/licenses/by/4.0https://agrojournal.rudn.ru/agronomy/article/view/19541The study aimed to improve fruit set and plant performance to increase tomato productivity by studying the effect of plant growth regulators on tomato plants (Lycopersicon esculentum). A specific experiment has been carried out to study the effect of plant growth regulators Hemo bles (humic acid, 850g/kg) at applied doses (250, 500 and 700 ppm) and Magictone (naphthalene acetic acid and naphthalene acetamide, 5…12.5 g/kg) at applied doses (250, 500 and 700 ppm) on growth and physiological characteristics of tomato plants (Big Beef F1). The experimental design was a Complete Randomized Blocks Design. Both Hemo bles and Magictone were applied three times (spraying on plants at 30 days after planting (DAP), 60 DAP and 90 DAP). The obtained results showed that, applying Ener-850 humic acid caused the highest significant plant height (264.6 cm), number of leaves/plant (45), stem diameter (1.9 cm) and fruit weight (137 g) during the two seasons. In addition, applying Magictone resulted in the highest significant flower number (48.1), fruit number (35.1) and flower clusters number in the plant (13.6). Additionally, humic acid significantly increased dry weight (75.1 g) of arial parts with improving of tomato fruit quality via enhancing the concentrations of ascorbic acid, level of vitamin C and carotenoid content. The results were analyzed using one-way analysis of variance (ANOVA) followed by Tukey’s HSD test with α = 0.05 with the help of MINITAB (v. 19.0) program.С целью повышения продуктивности исследовали влияние регуляторов роста на растения томата Lycopersicon esculentum. Изучено влияние регуляторов роста Hemo bles (с содержанием гуминовой кислоты 850 г/кг) в концентрации 250, 500 и 700 ppm и Magictone (с содержанием нафталинуксусной кислоты и нафталин ацетамида 5…12,5 г/кг) в концентрации 250, 500 и 700 ppm на рост и физиологические параметры растений томата сорта Биг Биф F1. Опрыскивание растений регуляторами роста Hemo bles и Magictone проводили три раза (через 30, 60 и 90 дней после посадки). Полученные результаты показали, что применение препарата Ener-850 с гуминовой кислотой в течение двух сезонов оказало наилучшее влияние на показатели роста растений: высоту побегов (264,6 см), количество листьев на 1 растении (45 шт.), диаметр стебля (1,9 см), массу плодов (137 г). Использование препарата Magictone способствовало образованию большого числа цветков (48,1), плодов (35,1) и соцветий (13,6) на одном растении. Гуминовая кислота также оказывала положительное влияние на качество плодов томата, увеличивая долю сухих веществ (75,1 г) надземной массы растений, в результате чего возрастало количество аскорбиновой кислоты, витамина С и каротиноидов (4,82 мг/100 г). 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