2020,    № 2 (40)    

GENERAL AGRICULTURE, PLANT GROWING




Ashaeva O.V., Baluev Y.S.

Influence of the growth regulator HEFC on spring wheat grain yield

The article studies the influence of the plant growth regulator of the retardant type HEFK (AS 480 g/l of etephone) on the yield and structural elements of spring wheat of Zlata variety under the conditions of the OAO Veryakushi Agricultural Entreprise, located in the north-eastern part of Diveyevo region on gray forest medium loamy soil. Field studies were carried out for three years: from 2016 to 2019. We studied different application rates of HEFK: 0.5; 1.0; 1.5; and 2.0 l / ha. The processing of winter wheat crops was performed in the phase of the beginning of exit into the tube. On average for 3 years, the Field germination of seeds was good and amounted to: 87.6-88.2%. In the variants with the use of HEFC at a dose of 1.0 and 1.5 l / ha, there was an increase in plant safety by 11-12 PCs/m2 compared to the control. When processing crops with a growth regulator at a dose of 1.0 l / ha, the maximum yield of spring wheat grain was 3.21 t / ha, which is 0.31 t/ha more than the control. The use of HEFC at a dose of 1.0 l / ha increased the water content of the ear by 2 PCs. and productivity by 0.068 g. The growth regulator did not significantly affect the density of the productive stem. Increasing the dose of HEFC significantly reduced the height of wheat plants from 72.3 cm in the control to 53.8 cm in the variant with the drug consumption rate of 2.0 l / ha. Treatment of crops with a growth regulator at a dose of 0.1 l / ha contributed to an increase in the length of the ear by 0.5 cm compared to the control. The resistance of wheat crops to lodging was 5 points when processing HEFC crops in doses from 1.0 to 2.0 l / ha

Keywords: SPRING WHEAT, REGULATOR OF THE PLANT GROWTH HEFK, FIELD GERMINATION RATE, SURVIVAL RATE OF PLANTS, CROP YIELD, CROP YIELD STRUCTURE, LENGHT OF PLANTS AND INFLORESCENCES