EFFECTIVENESS OF FUNGICIDES USAGE IN THE POTATOES CULTIVATION

Abstract

The article assesses the impact of fungicides on the development and prevalence of diseases during the growing season, on the yield and quality of potatoes. The effectiveness of the use of chemical and biological preparations in the treatment of tubers before planting and potato plants during the growing season is evaluated. The aim of the work was to study the influence of various disease protection systems on the yield and quality of potato products. Scheme of the experiment: pre-planting processing of potatoes and processing on vegetation in phases of 2-3 real leaves; budding and before closing the tops. 1. Celest Top: 0 + Ordan + 0; 2. Celest Top: Metaxil, Ridomil , Ordan; 3. Celest Top: Fitosporin, Gamair, Ordan; 4. Celest Top: Fitosporin , Gamair, Fitosporin;5. Taboo + Gamair: Metaxil, Ridomil, Ordan; 6.Taboo + Gamair: Fitosporin, Gamair, Ordan; 7. Taboo + Gamair: Phytosporin, Gamair, Phytosporin. According to the results of the analyses, the best option is where potato tubers were treated with the fungicide Celest Top (0.4 l/t) before planting and during the growing season, potato plants were sprayed three times in phases of 2-3 real leaves (Metaxil – 2.5 kg/ha); budding (Ridomil – 2.5 kg/ha) and before closing the tops (Ordan – 2.5 kg/ha). The applied preparations contributed to an increase in yield, had a significant impact on the content of starch and dry substances.