Specialists of the branch of the Federal State Budgetary Institution "Rosselkhoztsentr" in the Krasnoyarsk Territory during the growing season of 2020 note the active advancement of the Colorado potato beetle in the eastern regions of the region. Centers of harmfulness of larvae were found on private potato plantations in Abanskiy, Dzerzhinskiy, Motyginskiy (north-east) and Partizanskiy districts. Their number is up to 50 individuals / bush, which is 2,5-5 times higher than the economic threshold of harmfulness (EPV) equal to 10-20 individuals / bush when 5-10% of plants are populated.
The Colorado potato beetle appeared in the region in 2001, first in the south (Shushensky district), and in 2003 in the west of the territory (Achinsky, Bogotolsky, Nazarovsky districts). Over time, gradually, adapting to the natural and climatic conditions of the region, the pest completely colonized the gardens of the western and southern groups of the region's districts. For many years in the center of the region, areas of conservation and harmfulness of the beetle population in the village of Chelnokovo of Berezovsky, as well as in Atomanovo, Sukhobuzimsky districts. In 2017, during the outbreak of the number, the pest approached Krasnoyarsk as close as possible, damaging the potato planting in the suburbs - the village of Ust-Mana. In the production fields of culture, the Colorado potato beetle has been periodically observed since 2008. Farms cultivate up to 1,0 thousand hectares.
Until now, the north and east of the Krasnoyarsk Territory remained free from the pest. However, intensive variety renewal and variety change of potatoes in the private sector contributed to the introduction of the Colorado potato beetle into these territories. Will the pest population take root here? We'll see…. In the meantime, new fighters - defenders of potatoes, it is recommended to be patient and either manually collect beetles and larvae, or use the following approved drugs: Bitoxybacillin, Fitoverm (bio), Aktara, Decis Profi, Zhukoed, Intavir, Kinmiks, Tanrek, etc. Processing is necessary carry out in dry, calm weather in the morning or evening hours with the use of personal protective equipment for the respiratory organs, eyes and skin.