Parthenium hysterophorus · L. Synonyms. Villanova Ortega · Bolophyta Nutt. Partheniastrum Fabr. Echetrosis Phil. Hysterophorus Vaill. Argyrochaeta Cav. Parthenium is a genus of North American shrubs in the sunflower tribe within the daisy ‎: ‎Asteraceae. Parthenium weed. – Parthenium hysterophorus. Parthenium weed matures quickly and produces large quantities of seed (up to , seeds per plant). Parthenium hysterophorus is an annual herb that aggressively colonises disturbed sites. Native to Mexico, Central and South America.


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This weed is considered to be a cause of allergic respiratory problems, contact dermatitis, mutagenicity in human and livestock. Crop production is drastically reduced owing to its allelopathy. Also aggressive dominance parthenium hysterophorus this weed threatens biodiversity.

Parthenium hysterophorus the weed before it seeds will reduce future problems.

Effects and Management of Parthenium hysterophorus: A Weed of Global Significance

Control is generally best applied to the least infested areas before dense infestations are tackled. Consistent follow-up work is required for sustainable management. To control this weedit is recommended to pull out the plants before they flower, making sure parthenium hysterophorus remove all of the root system to avoid regrowth from root remnants.

Use lightweight, long sleeved garments and cotton gloves to avoid contact with the skin. A number of herbicides foliar applications registered for use against this weed elsewhere in the world When parthenium hysterophorus any herbicide always read the label first and follow all instructions and safety requirements.

If in doubt consult an expert. The best method of control is to maximise competition against the weed by maintaining good grass growth, which requires exclusion of grazing livestock until grass has become re-established, followed by reduction in stocking rates to prevent reinvasion by the weed.

Parthenium - Wikipedia

Biological control offers the prospect of sustainable control of Parthenium hysterophorus. Agents have been released in Australia and parts of Asia with some success. South Africa has applied for release of agents and trials are ongoing in Ethiopia.

Under this act the Minister of Agriculture, can compel land owners who have such declared noxious weeds growing on their land to remove or have it otherwise removed.


However, this species is not declared in Uganda and Parthenium hysterophorus. The rosette stage may persist for considerable periods during unfavourable conditions such as water or cold stress.

Scientific name

As the stem elongates, smaller, narrower and less dissected leaves are produced alternately on the pubescent, rigid, angular, longitudinally-grooved stem, which becomes woody with age. Both leaves and stems are covered with short, soft trichomes, of which four types have been recognized and are considered to be of taxonomic importance within the genus Kohli and Rani, Flower parthenium hysterophorus are both terminal and axillary, pedunculate and slightly hairy, being composed of many florets formed into small white capitula, mm in diameter.

Contact Common name fausse camomille French, New Caledoniawhitetop weed Englishcongress grass EnglishSanta Maria feverfew EnglishKarottenkraut Germanragweed parthenium Englishparthenium weed English Synonym Similar species Summary Parthenium hysterophorus is an annual herb that aggressively colonises disturbed sites.

Native to Mexico, Central and South America, Parthenium hysterophorus was accidentally introduced into several countries including Australia, India, Taiwan and Ethiopia. In some areas it has become an extremely serious agricultural and rangeland weed. Parthenium hysterophorus parthenium hysterophorus also known to be allergenic to some people and consumption by livestock can taint meat.

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This process continues in cyclic fashion until the bioagent and weed population get established at a low level. A successful control strongly parthenium hysterophorus on favourable conditions for the bioagent, which effectively increase the population of the controlling organism [ 40 ].

This method is a slow operation and currently used in noncropped areas. The control of different weeds through the use of classical biological agents, insects, and fungal plant pathogen is given in Table 2 [ 3041 ].

Successful examples of control of weeds through classical biocontrol agents. Usually, they are applied in a manner similar to chemical herbicides hence called bioherbicides by periodic dispersals of distinct doses of the virulent inoculum [ 37 parthenium hysterophorus, 43 ].

The concept of mycoherbicides was introduced by Daniel et al.