RESPONSIVENESS OF CORN HYBRIDS ON APPLICATION OF GROWTH AND DEVELOPMENT REGULATORS OF PLANTS
There are the results of three years of research of influence of growth and development regulators of plant of Baikal EM-1, Krezatsin, Zircon and Epin on energy of germination, laboratory and field germination, yield and energy efficiency of early maturing maize hybrids ROSS 145 MV, Povolzhsky 107 SV, Catherine SV and NK Gitago. Field experiments were carried out on light loamy sod-podzolic soils in the climatic conditions of the Chuvash Republic. Studies have shown significant positive effects of the use of biological preparation Baikal EM-1, Krezatsin, Zircon and Epin in the cultivation of all analyzed without exception hybrids of corn, which is expressed in the yield increase from 0,4 to 1,53 t/ha or biological energy 5,47 to 19,67 thousand MJ/ha, the increase in the net energy income by 1,3-2,3 times and reducing the energy cost of 1 ton of corn grain by 5-25% compared with the variant without the use of growth promoting substances. In General, the most appropriate in light loamy sod-podzolic soils of the Chuvash Republic is the technology of cultivation of medium early hybrid NK Gitago with the use of a biological preparation Baikal EM-1.