Feathertop Rhodes grass
Feathertop Rhodes grass (Chloris virgata)
Feathertop Rhodes grass infesting
(Photo V. Osten)
Feathertop Rhodes grass (Chloris virgata) is a tufted annual grass up to 1 m tall with erect and semi-prostrate branched stems capable of rooting at the joints. Leaf blades are bluish green, 5 to 25 cm long and 3 to 6 mm wide. The seed-heads or panicles have seven to 19 feathery, white-silver spikes that are 3 to 9 mm long. The feathery appearance comes from the stiff white hairs and awns arising from the seeds.
Factors that make Feathertop Rhodes grass a major weed:
- Feathertop Rhodes grass has displayed tolerance to glyphosate
- Seeds readily germinate unless buried
Further detail about this weed including integrated weed management tactics that could be considered when developing a management plan can be found in the section on problem weeds in the new Integrated Weed Management Manual.
Ecology and biology of common weeds are outlined on page 18 of section 6 of the Integrated Weed Management Manual.
GRDC fact sheets and other publications
Ecology and management of feathertop Rhodes grass - GRDC YouTube webinar - presenter: Mark Congreve, ICAN. Feathertop Rhodes grass has emerged as a major weed of zero till cropping in the northern region. It is well adapted to current farming practices and when this is coupled with tolerance to glyphosate it can rapidly become a major problem in some fields.
Double knock applications - target weed species & application strategy - Michael Widderick, DAF Qld weed specialist on the principle behind the 'double knock' for controlling summer weeds such as feathertop Rhodes grass, barnyard grass and flaxleaf fleabane.
Feathertop Rhodes Grass: Biology Factsheet (The University of Adelaide)
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