Estimation of the portion of different factors effects on harvest formation and technological quality of summer soft wheat corn in the conditions of north- east of the Russian Nonchernozem zone

By the method of three-factor variance analysis the authors determined the portion of different factors effect (nitrogen fertilizers, weather conditions and genotype) on productivity and technological quality of summer soft wheat corn during the cropping on Kirov oblast'. It was shown, that the plant dry mass, yield of the primary and side production and biological harvest to a greater extent are determined by nitrogen nutrition (30-59 %), weather conditions during vegetation (13-38 %), and also by the interaction between these factors. The following interrelations were revealed: formation of biological harvest, corn and straw in phase of complete ripeness is depended from genetic variety's peculiarities (factor's contribution - 8-14 %); the content of damp protein and gluten in corn to a great extent depend from application of nitrogen fertilizers (46 %) and genotype (21,8 %); the quality of gluten is determined by weather conditions (41,8 %).