INFLUENCE OF FERTILIZER SYSTEMS ON BIOMETRIC INDICATORS AND POTATO YIELD

The article presents the results of experimental studies of the influence of different fertilization systems, including mineral, organic-mineral and organic fertilizers, on the development of the vegetative mass of potato plants and the yield accumulation of varieties of different maturity groups concerning the soil and climatic conditions of the Western Forest-Steppe.It was established that the highest yield indicators on the 80th day after planting were obtained on variants with the introduction of biohumus fertilizer (4.0 t/ha) of the Legend variety, where the weight of the tubers was 0.526 kg and, accordingly, the yield was 28.9 t/ha.In the Slauta variety by introducing dry granulated chicken manure (0.5 t/ha), tuber weight was 0.543 kg and yield -29.8 t/ha.In all other variants of the experiment for the varieties Legend and Slauta, there was a decrease in yield indicators compared to the 60th day, which, in our opinion, is caused by weather conditions, namely a large amount of precipitation, which caused rotting of potato tubers.