Factsheets produced by The University of Adelaide and DAFWA.
Common sowthistle (Sonchus oleraceus L.), also known as milk thistle, is a dicotyledonous annual weed. The plants are erect and fleshy and possess hollow, smooth stems that exude a milky latex when damaged. The weed can grow up to 1.5 m in height. Plants of common sowthistle can be either present as a rosette or upright in their growth form.
Windmill grass (Chloris truncata R.Br.), also known as umbrella grass or blow-away grass, is a short-lived perennial species that has recently been identified as resistant to glyphosate. This weed is becoming more dominant in southern Australian farming systems.
Mixing order is very important to ensure that tank mixed products perform to their potential. Understanding formulation type and adjuvant type are an important part of getting the mixing order right. If in doubt about the compatibility of products in a tank mix, contact the manufacturers and conduct a jar test to ensure they will mix.
The sequential application of two separate herbicide treatments has become the most common ‘double knock’ approach used in weed management. Unfortunately, these approaches have added cost, complexity and scheduling issues to weed management programs but have been required for two main reasons: 1. To control herbicide-resistant weed populations, that may have been selected by prolonged use of a similar mode of action chemistry; and 2. Control of weed species or stages that are unsuccessfully controlled with single herbicide applications.
Barley grass is a problematic annual weed species in Australia, typically growing in areas with less than 425 mm of rainfall. It is commonly found in crop fields and pastures, on roadside verges and in livestock enclosures.
Windmill grass (WMG) is a short-lived perennial grass species that has been problematic in the northern cropping region of Australia and is now becoming more common in the southern region. It establishes on roadsides and in summer-fallow, where over-reliance on glyphosate has led to the development of resistance. An understanding of windmill grass biology will […]
Already a major weed in the northern cropping region of Australia, Feathertop Rhodes grass (FTR) is now occurring in fields in the southern and western cropping regions. FTR has been favoured by the shift towards reduced tillage. In addition, the heavy reliance on glyphosate that typically accompanies reduced tillage has led to resistance, further increasing […]
Statice (Limonium lobatum) is a winter annual dicotyledonous weed of Mediterranean origin that has naturalised inland and along some coastal areas of southern Australia. This herbaceous weed from the Plumbaginaceae family is often found in areas of low to moderate rainfall on sandy to loamy soils that are calcareous, sodic and of neutral to high […]
The application of herbicides late in the season to prevent weeds setting seed or to desiccate crops must be carried out with caution and in line with herbicide label recommendations. Download the factsheet for more information.
Annual ryegrass is a major winter annual weed of the southern Australian wheat-belt, which naturalised after its introduction as a pasture species. If not managed effectively, ryegrass can significantly reduce the yield of winter crops.
Roly poly down the hill is fun, but the weed doesn't evoke the same joy! Roly poly, also known as prickly saltwort or tumbleweed (Salsola australis R.Br.), is a native species found throughout Australia with the exception of Tasmania (Image 1). The dead plants can break off at ground level, forming the iconic ‘tumbleweeds’ seen in movies.
This weed is found throughout Australia, with the exception of Tasmania. The origin of this species is unknown, but it may be native to the Kimberly, Pilbara and desert regions of Western Australia. There are twelve species of Boerhavia in Australia, but B. coccinea is the most common in disturbed areas like agricultural fields or […]