Skirtingų trąšų įtaka ekologiškai augintų bulvių stiebagumbių ligotumui

Abstract

Field tests were conducted in 2019 at Vytautas Magnus University Agriculture Academy test station. The aim of the study was to determine the effect of different organic fertilizers: Fertenat, Humistar, Agrolinija-S, BIO-3 testing them on ‘Melodi’ kind potato against tuber disease. The total field area of the potato test was – 17.5 m2, the accounting area – 10 m2. The test variants were repeated four times. The reduction in the prevalence of Rhizoctonia canker disease was most influenced by Humistar (20.0%; 27%) fertilizers while the use of Fertenat (26.5%; 31%) was least effective also it had minor impact on the intensity of the diseases. Comparing results against Late blight shows that the highest spread was when Humistar (22%; 11%) fertilizers were used, but the disease was found to be less intense, while BIO-3 (12,5%; 22%) was most effective in stoping spreading although severity was highest. And common scab disease spread and intensity had major effect while Agrolinija-S (34%; 13%) fertiliser was used while Fertenat (39,5%, 13,5%) fertilaiser had almost no impact in the test results.