Efficiency of insectofungicide dressing agents in suppressing potato rhizoctoniosis in the Novosibirsk region

The scientific research aims to establish the effect of modern insectofungicides Prestige and Respect on development potato rhizoctoniosis in agroecosystem crops region. authors evaluated effectiveness preparations under conditions production planting potatoes JSC “Sea Fields” during period from 2015 2020. Under farm conditions, seed tubers are heavily (on average 38.5%) infested with sclerotia fungus R. Solani. Such requirements ensure that pathogen is transmitted material yearly. During study, found dressing reduced infestation form by a factor 4, thereby ensuring interruption epiphytotic process. Insectofungicides protected seedlings already early plant growth stages. number dead field 8.5% 0.13%. Rhizoctoniosis this developed stalks an epiphytosis. Without dressing, prevalence was 72% 88%. And disease 27.1%, reaching almost 40% some years. With application stolons decreased three times did not exceed 8.8%. damaged 2.2 times, fallen 2.3 times. Introduction technology growing allowed reduce total score plants affected 6.8 At same time, protective identical. biological efficacy ranged 54.9% 98.8%, while economic efficiency 17.7% 24.2%.