Ragweed
Common ragweed is a malicious quarantine weed. Rapidly developing a powerful above-ground mass and root system, common ragweed strongly suppresses cultivated plants. If crops are not cared for properly, common ragweed outgrows them and strongly chokes them out, leading to a decrease in yield.
Federal Service for Veterinary and Phytosanitary Surveillance (Rosselkhoznadzor). http://www.fsvps.ru/
FGBU All-Russian Plant Quarantine Center. http://vniikr.ru/