Strategy of potato chemical protection from diseases

During 2019-2021, the effectiveness of pre-planting treatment potato tubers Sante variety against rhizoctonia disease and two schemes for use combined contact fungicides in conditions Moscow region was evaluated. The biological efficacy Idikum preparation 83.5%. All tested protection during growing season showed high efficiency reducing prevalence degree late blight alternaria leaf spot. Depending on prevailing weather season, scheme, where contact-systemic Metaxyl used first treatment, provided an increase yield by 36.3-47.5%, second scheme – with Kumir 25.8-36.3%.