Sticky snakeroot, Mexican devil or Crofton weed call it what you want - since the early 1900s this weed has been causing grief in Australia.
The tenacious and troublesome Crofton weed (Ageratina adenophora), as it is commonly known, has been running rampant in eastern coastal Australia since it escaped from being an ornamental plant in Sydney gardens.
Crofton weed is a serious environmental weed that has invaded agricultural lands as well as 150 reserves in NSW managed by the National Parks and Wildlife Service (NPWS).
The new biological control agent is a rust fungus that originates from Mexico (where Crofton weed is native) and works by infecting the young leaves and stems of the plant, stunting development and disrupting its ability to reproduce.
Dr Louise Morin, plant pathologist from CSIRO s Biosecurity Flagship, is leading the Crofton weed rust fungus release program.
The release of this fungus in Australia is exciting because it could make a big difference in the management of Crofton weed populations, Dr Morin said.
15) For example, crofton weed, which originated in Latin America, spread into Yunnan province in the 1940s.
These losses are caused by the invasion of pests such as Loblolly Pine Mealybug (Oracella acuta), American white moth and giant African snails; and weeds like crofton weed, mile-a-minute weed, alligator weed, ragweed, smooth cord-grass, siam weed and water hyacinth.
For example, crofton weed can occupy more than 90 per cent of grassland within three years of invasion.
For example, crofton weed, now widely found in Southwest China, has caused the disappearance and extinction of the indigenous plantation.
The success of the pilot scheme led to a more extensive "Ten Provinces and One Hundred Counties" (shisheng baixian) program in 2004, with more targeted species for eradication including crofton weed, ragweed (bitterweed), and alligator weed.
Crofton weed covered 110,000 square kilometers in 1985 and expanded to 247,000 square kilometers in 1995.