AGERATINA ADENOPHORA PDF

The principal differences are that A. Prevention and Control Top of page Due to the variable regulations around de registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Mechanical Control Where practicable, A. Unreliable rainfall patterns may make sown pastures difficult to establish in spring, prior to the summer germination of the weed, but pasture improvement is probably the most effective means of control available. Slash and cultivate infested areas in early spring, using crawler tractors and tandem offset discs where wheeled tractors cannot be employed with safety. Sow the pasture mixture at a high rate and spotspray seedlings as they appear Auld, ; Parsons and Cuthbertson,

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The principal differences are that A. Prevention and Control Top of page Due to the variable regulations around de registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control.

Mechanical Control Where practicable, A. Unreliable rainfall patterns may make sown pastures difficult to establish in spring, prior to the summer germination of the weed, but pasture improvement is probably the most effective means of control available. Slash and cultivate infested areas in early spring, using crawler tractors and tandem offset discs where wheeled tractors cannot be employed with safety.

Sow the pasture mixture at a high rate and spotspray seedlings as they appear Auld, ; Parsons and Cuthbertson, Biological Control Because biological control of Crofton weed was fairly successful in Hawaii, USA, the trypetid gall fly, Procecidochares utilis, was introduced to Queensland, Australia, in It established successfully, but the amount of damage fluctuated because of parasitism by indigenous hymenopteran insects.

Crofton weed is also attacked by an exotic fungus, Cercospora eupatorii which is thought to have been introduced accidentally with P. None of these organisms offer any real degree of control individually, but the combined effect has reduced plant vigour Dodd, ; Haseler, ; Cullen and Delfosse, Biological control was pioneered in Hawaii, USA.

A survey of natural enemies in the native range of the weed in Mexico was carried out by Osborne and the gall fly P. The weed was successfully controlled in all areas, except in regions with annual rainfall over mm Bess and Harmamoto, The gall fly, accompanied by a specific leaf spot disease caused by Mycovellosiella sp. When the weed spread into China, the gall fly was obtained from the border area with Nepal and released in Yunnan Province He and Liang, and later in Sichuan Province but the results have been disappointing due to heavy parasitism Greathead, Biological control has also been attempted in New Zealand and South Africa where both the gall fly and the fungus are established but, again with little impact on the weed Kluge, References Top of page Auld BA, The distribution of Eupatorium adenophorum Spreng.

Eupatorium weed species in Australia. The autecology of Eupatorium adenophorum Spreng. Biological control of pamakani, Eupatorium adenophorum, in Hawaii by a tephritid gall fly, Procecidochares utilis. Status of the weed, fly and parasities of the fly in versus Wild Flowers of East Africa. Biological control of Eupatorium adenophorum in Queensland. PQR database. Sichuan Province, and implications for its control in China.

Ascot, UK: Imperial College.

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Weeds of Australia - Biosecurity Queensland Edition Fact Sheet

Taxonomy[ edit ] Ageratina adenophora is known by many common names, including eupatory, sticky snakeroot, crofton weed, and Mexican devil. Eupatorium adenophorum is a synonym. Description[ edit ] Ageratina adenophora is a perennial herbaceous shrub that may grow to 1 or 2 metres 3. The small compound flowers occur in late spring and summer, and are found in clusters at the end of branches.

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