Trembitskaya O. The effects of fertilizers on the fertility and agro-ecological condition of sod-podzolic soils contaminated with radionuclides.

The thesis is aimed at improving the technology of maintaining and increasing the fertility of sod-podzol soils, yield and crop quality through applying organic and mineral and alternative fertilizers in four-field grain and row crops rotation in the contaminated Central Polissia of Ukraine. The research proves that organic and mineral fertilization system with ecobiom and agrovit-core contributes to the increased soil fertility, a positive balance of humus and nutrients (NPK), the increase of soil biological activity and promotes better plant growth and development, 65-77 percent higher crops yields, as well as the tendency to decreasing the specific activity of radionuclides by 13-39,4%. New alternative fertilizers ecobiom and agrovit-core prove more energy favorable and contribute to the energy efficiency coefficient by 4.58 and 4.15. Nevertheless, thetraditional system proves the most economically efficient, as well as with the elements of biologization and the biological system and fertilizers.