eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2015-08-15 12 2 1397 1401 2432 article Maria Vladimirovna Selivanova 1 Olga Yurievna Lobankova 1 Elena Semenovna Romanenko 1 Natalia Alexandrovna Esaulko 1 Elena Alekseevna Sosyura 1 Stavropol State Agrarian University, Russian Federation, 355017, Stavropol, lane Zootechnical, 12 The article represents a three-year study of the effect of bioactive substances as part of growth promoting factors on the course of physiological processes in cucumber crops when grown under protected ground conditions (greenhouse) in the Stavropol Territory. The enhanced metabolism of the plants resulted in increase of crop yields. The studies revealed that the highest yield of cucumber exceeding the control by 14.7% was obtained at combined use of growth factors, namely Radifarm, Benefit, and Megafol. https://www.biotech-asia.org/vol12no2/effect-of-growth-factors-on-the-metabolism-of-cucumber-crops-grown-in-a-greenhouse/ growth factor; respiration rate; photosynthesis rate; transpiration rate; yield; cucumber; protected ground