N. V. Telekalo.
Agricultural plants can realize their productive potential by high photosynthesis intensity, which provide optimal assimilation surface forming plant that is able to function for a long time, and generate the appropriate photosynthetic potential and ensure sustainable accumulation of dry matter. Photosynthesis productivity depends on assimilation surface index, which could be influenced by significant changes depending of the carried growing technological methods. One of the main conditions for improving efficiency and increasing the gross grain harvest pea is the development and introduction of new agrarian practices techniques in order improve its performance, provided that the grain productivity intensive pea varieties under conditions of Right-Bank Forest-Steppe in Ukraine. This problem is actual and very important. The results on the effects of pre-treatment methods of seed and fertilizer doses on features passing of photosynthesis and pea grain yield are presented in this article. It was observed that the maximum values of assimilation surface 6.33 m2 / m2 were formed in a variety Ulus using the pre-treatment of seeds and Ryzohumin and Polimiksobakteryn and fertilizer at a dose of triple N45P60K60 foliar feeding water-soluble fertilizers СODA in full bloom phase, green beans and ripening seeds pea. It is established a positive impact of organized factors on the formation of the seed yield of peas varieties Tsarevich and Ulus. It is established the peculiarities of photosynthesis passing under phases of growth and development and is found the nature of relationships between the level of increase leaf area and yield formation.