The Influence of a Growth Stimulator «Krezacin» on Growth and Development of Smooth Brome in Conditions of the Middle Lenа

Abstract

In conditions of the Middle Lena valley, a growth regulator was used for the first time as a stimulant, which increases the germination of seeds, stimulates the initial growth of plants, promotes resistance to diseases and generally improves the adaptability of perennial grasses in the first years of life. In the studies, the growth stimulator Krezacin was used. «Krezacin» (trekazin, irkutin) is an immunostimulant, adaptogen of a new genera- tion. It is used for active rooting and strengthening of plant immunity in the first years of plant life. The mechanism the cellular level and activates adaptive reactions of plants. The studied areas of field experiments were located in the Middle Lena valley at the scientific station «Markhinsky» of the Institute for Biological Problems of Cryo- lithozone of the SB RAS, located 13 km away from Yakutsk city. For the first time in the conditions of cryogenic floodplain layered soils, the influence of the growth stimulant Kresacin on linear growth, productivity, shoot for- mation and the structure of shoots of a smooth brome of the variety SibNIISKhoz-189 was studied. Over the years of study, it was proven that an effective dose of a growth stimulant Krezacin is 75 ml / 10 l. Three years studies have established that soaking of smooth brome seeds with Krezacin in a given dose promotes an increase in the linear height of smooth brome up to 110.8 cm, the productivity of the above-ground mass by 2 times, an increase in the number of generative shoots by 1.8 times, vegetatively elongated shoots by 2.3 times and vegetatively short- ened ones by 1.6 times. At the same time, the mass of one generative shoots of smooth brome is 3.5 g, which ex- ceeds the control by 16 %, which indicates the maturity and usefulness of the sown phytocenosis.