Z.I. Usanova, P.I. Migulev, Yu.T. Farinyuk and M.N. Pavlov
Abstract
This paper presents data on characteristics of growth, development, and yield formation of 34 corn hybrids obtained in 2019 at the ââ¬ÅSkopaââ¬Â LLC, the Sonkovsky District of the Tver Region (Russia). Four groups of hybrids with different productivity levels were identified. Average values of corncob and herbage yield and moisture-free herbage yield were the following: first group ââ¬â six hybrids (17.6%), 79.48 t/ha and 18.55 t/ha; second group ââ¬â six hybrids (17.6%), 58.97 t/ha and 11.1 t/ha; third group ââ¬â 13 hybrids (38.2%), 41.1 t/ ha and 9.4 t/ha; fourth group ââ¬â nine hybrids (26.1%), 31.2 t/ha and 7.3 t/ha. The hybrids LG 30189 (Lima Grain, France) and Zeta 110 S (LABOULET, France) were the most productive: corncob and herbage yields were 87.5 t/ha and 91.8 t/ha, respectively, and moisture-free herbage yields were 21.39 t/ha and 18.52 t/ ha, respectively. Of the Russian hybrids, Kaskad 195 SV (Rossosh gibrid), ZP 190 SV, and Voronezh 158 (Zolotoy pochatok) were the most productive: corncob and herbage yields were 44.8-49.0 t/ha, and moisturefree herbage yields were 9.10-10.7 t/ha.