Rozhkov A. The agrobiological bases of forming the productivity hard spring wheat and spring triticale in the Left-bank Forest-Steppe of Ukraine

The relationships between grain productivity, field germination, plant survival, biometric indicators and structural elements of the crops have been defined. The high – effectiveness of band method of sowing has been proved. This method provides increased grain productivity of spring crops headed as compared with a general common sowing in drills ceteris paribus. The Effectiveness of land sowing is growing considerally by the optimizing of the seeding rates and favourable weather conditions. The determining factor in the develops – ment of spring crops seeding is weather conditions of the year. The optimization of the coenotic stress in the seeding and applying of the feeding level a negative influence of the abiotic factor and promote the fuller realization of the biological potential in the crops productivity. The parts of the agricultural activities influence on the cereal crops formation of hard spring wheat and spring triticale have been demonstrated. The weather conditions of the year had biggest impact (nearly 50%). Among the agricultural subjects under study 10–20 % had a seeding rate, a method of seeding made 7–15 % and 4–10 % was a foliar feeding respectively.