| Popis: |
Application of biological preparations (Planriz, Fitotsid, Diazofit and Fosfoenterin) and chemicals (MC Ridomil Gold 68WG) in the conditions of Western Polissya has reduced the pathogens infection in 1.6–2.2 times at treatment of tubers prior to planting, plants during budding and flowering stages, as well as before storage. The least general disease development was observed in variants with Planriz (2.0–2.5 l/t), and the composition of biological preparation Planriz, Diazofit and Fosfoenterin (2.0–2.5 + 0.2 + 0.2 l/t). Among the total number of diseases the wet bacterial rot was 14.3–30.0%, Phoma exigua – 6.7–16.3%, Fusarium spp. – 62.5–71.1%. The development of Fusarium spp. has increased in 1.6 times at the end of storage period, Phoma exigua – in 4 times. The level of bacterial rot development had remained unchanged for the tubers of the Lileya cultivar planted in mid-May. The planting dates had almost no influence on the prevalence of disease at storage of the potatoes of Skarbnitsa cultivar. |
