Kyyenko Z. Yield and quality of new potato varieties depending on application rate of mineral fertilizers and growth regulator Poteitin in the conditions of sod-podzol soils of Ukraine Polissya zone.

The thesis is presented for obtaining a scientific degree of the agricultural sciences candidate on specialty 06.01.09 - Plant Growing.- Bila Tserkva State Agrarian University of the Ukraine Ministry of Agrarian Policy, Bila Tserkva, 2004. The thesis is dedicated to the important current problem - optimization of growth and development of new potato plants varieties by application of varying application rates of mineral fertilizers without Poteitin and with it. The main aim is to improve the technology of growing variety related potatoes for human consumption. There were recommended optimal application rates of mineral fertilizers with Poteitin and without this growth regulator to promote growth optimization and development of photosynthetic activity, establishing maximal yield of ecologically clean and biologically valuable variety related potato tubers. Economic and bio-energetic growing efficiency was substantiated for varying application rates of mineral fertilizers with growth regulator Poteitin.There were given results of practical application of a better fertilization system for new potato varieties in farm conditions.