Efficiency of application of the growth regulator organostim on grape variety arcadia in the conditions of Orenburg region

Abstract

The article presents data on determining the effectiveness of the use of the growth regulator Organostim on grapes of the Arcadia variety in the conditions of the Orenburg region. The studies were carried out on the basis of the Orenburg branch of the Federal Research Center of Horticulture from 2019 to 2021. Vineyard was established in 2012. Objects of research were the introduced grape variety Arcadia, growth regulator Organostim, VR (15 g/l dihydroquercetin + 30 g/l triethanolammonium salt of orthoresoxyacetic acid). Getting a stable harvest occupies one of the main places in the viticulture industry of the Orenburg region. In modern agriculture, plant growth regulators are used, which improve plant root nutrition, increase resistance to stress factors, stimulate plant growth, the formation of ovaries and berries, accelerate ripening times, and improve product quality. As a result of the studies, data were obtained that showed that when using the Organostim option (2.0 l / ha), the maximum number of bunches was noted (12 pcs.), average berry weight (7.4 g), number of berries per bunch (105 pcs.). There is an increase in the mass of the bunch and productivity at a rate of consumption of an agrochemical of 2.0 l / ha by 22 % and 111 %, respectively, relative to the control variant. It was revealed that the average yield per hectare when using Organostim (2.0 l/ha) was 11.4 t/ha, and the increase was 6.0 tons. As a result of the studies, the effectiveness of the use of the plant growth regulator Organostim on the Arcadia grape variety was established.