Hibiscus trionum (weed)

From Pestinfo-Wiki
Jump to: navigation, search

Literature database
22 articles sorted by:
year (recent ones first)
research topics
affected crops
Hibiscus trionum (click on image to enlarge it)
Author(s): Gerhard Nitter
Source: Open Media

Hibiscus trionum (weed) L. - (Venice mallow or bladder ketmia)

The original distribution of this weed extends from the eastern Mediterranean region to southern Asia, and to Australia, as well as to many parts of Africa. However, it has been planted as an ornamental in other regions and is now widely distributed around the world. It can be a troublesome weed in field crops like soybean, cotton or sugar beet, forming dense stands and substantially suppress the yield of the affected crops, e.g. see Odero et al. (2009).

Hibiscus trionum is an annual herb that germinates throughout the year after rainfall and grows to a height of around 50 cm. The first leaves are entire, but older leaves are deeply lobed. The stems are hairy and the large, white flowers open for only a few hours during the day. It produces bladder-like seed capsule, that split open when they are ripe, releasing the ~2 mm wide seeds.

Vernacular names
• Deutsch: Stundenblume
• English: Venice mallow
bladder ketmia
• Français: hibiscus d'Afrique
ketmie d'Afrique

The year-long germination and the prolific seed production can make it difficult to manage this weed.

Ketmia trionum