Особенности статуса борщевика сосновского в Украине и характеристика ликвидации опасного вида сорняка в Черновицкой области

The pest risk analysis (PRA) was carried out for Sosnowsky’s hogweed to determine the ability of the species to be a quarantine object by analyzing the available scientific data. According to the results of the PRA, Sosnowsky’s hogweed can be classified as a regulated weed and socially dangerous to human and animal health, highly aggressive in spread, and extremely difficult to eradicate in many areas, where it is widespread in small numbers. It allows to apply measures to it as for any quarantine plant: to control its appearance and completely eradicate it’s entry source. The results of developed method have been proposed using the example of town Chernivtsi. Weed density have decreased from 47,8 and 43,5 plants to 4,8 and 1,2 plants on 1 m2 in a number of hotbeds. These measures allowed to decrease the quantity of Sosnovsky’s hogweed in some hotbeds by more than 25 times.