Comparative analysis of the main economic and biological parameters of maize hybrids that determine their productivity

Corn kernels are characterised by the presence of all nutrients, macro- and microelements necessary for growth development in an easily digestible form. Considering differentiation soil climatic zones cultivation, breeding process is designed to establish hybrids different maturity groups. The research purposes evaluate maize groups a set economic biological traits productivity, high-yield stability, further cultivation production conditions suitable mechanised harvesting. Methods used include informational, theoretical analysis, synthesis, analogy, comparison generalisation; identification, measurement. During research, systematic analysis was applied, considering uniqueness technical, productive, growing hybrid corn. results demonstrate that achieve successful regulation productivity improve their quality, it select suitability specific soils zones, requirements seeds developing effective agrotechnical means processes occurring at stages development. corn hybrids, formed breeding, were determined high nutrient content: In mid-early corn, content crude protein 9.2-9.9%, fat – 4.2-4.4%, BER (nitrogen-free extractives) 82.5-83.3%, starch 71.4-73.7%; medium-late group, ranged from 9.8-10.4%, 4.1-4.6%, 80.6-82.2%, 70.2-74.1%. medium-early group obtained optimal height 245-276 cm, weight 1000 308-344 g, ratio node plant 0.445; medium-ripening respectively 296-351 318-382 0.455