Farm Business Management Factsheet
Key points Effective decision-making is at the core of successful farm business management. Making informed, logical and timely business decisions is crucial to achieving business objectivess. Understand the different elements that influence how decisions are made and the possible outcomes. Consider who is responsible for the final decisions in the different areas of your farm business. Ensure the decision is finalised and implemented in a timely manner. Want to link to this fact sheet/publication? Full article can be found here
Wild radish management and strategies to address herbicide resistance
Wild radish (Raphanus raphanistrum) is one of the most widespread and competitive broadleaf weeds of Australian cereal-growing regions. Increasing resistance to multiple herbicide modes of action is forcing growers to adopt diverse and integrated weed-control strategies to deal with this weed.
Common weeds of grain cropping
GRDC's 'The Common Weeds of Grain Cropping – The Ute Guide' aims to help growers, advisers, researchers and students to identify the most common weeds of grain cropping systems in Australia.
Northern IWM factsheet – common sowthistle
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. Its leaves may vary in colour and the amount of serration on their margins (Figure 1). Common sowthistle seeds possess a pappus, which helps in seed dispersal through the wind.
Windmill grass – Northern Region
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 and is steadily encroaching on Queensland. To better manage this key weed, we need to understand its ecology and what management tactics are effective for its control.
Mixing requirements for spraying operations
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. Key Points Understand what the formulation type is for each product and adjuvant being used. Never bring concentrated products into contact with each other through mixing equipment or in low tank volumes. Know the correct mixing order for every tank mix you use.
Alternative second knock herbicides for broadleaf weeds in fallow – are there other options?
Unfortunately, these approaches have added cost, complexity and scheduling issues to weed management programs but have been required for two main reasons: To control herbicide-resistant weed populations, that may have been selected by prolonged use of a similar mode of action chemistry; and Control of weed species or stages that are unsuccessfully controlled with single herbicide applications. Paraquat has been the key active ingredient used in the second knock situation and can provide effective management of a wide range of grass and broadleaf weeds. However, it is clear we require other options to use in this management window to: Avoid the more rapid selection of paraquat resistance; and Provide options that may improve weed control in situations where paraquat efficacy is not adequate. Since winter 2016, NGA has been screening a range of herbicides, to identify options that have the potential for this usage pattern. The two key broadleaf weeds being targeted are common sowthistle (Sonchus oleraceus) and flaxleaf fleabane (Conyza bonariensis).
Alternative Herbicides for Management of Group A Herbicide-Resistant Barley Grass in Field Pea
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. Although valued for animal feed in pastures early in the season, upon maturity the long barbed awns of barley grass seeds irritate livestock and entangle in wool, reducing productivity and product quality. Barley grass can also serve as a host for pathogenic fungi and nematodes in cereal-growing areas.
Windmill Grass: Biology
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 help guide management choices to enable successful long-term control. This factsheet includes findings from recent research by the Weed Science Group at the University of Adelaide.
Feathertop Rhodes Grass: Biology
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 the threat of FTR. An understanding of FTR biology will help guide management choices to enable successful long-term control. This factsheet includes findings from recent research by the Weed Science Group at the University of Adelaide.
Statice: Biology, Ecology and IWM Tactics
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 pH. Long-range dispersal is by seed, either through contamination of grain crops, harvest or tillage machinery, or by movement with livestock. Infestations are more common in pastures, roadsides and undisturbed habitats, however recently this weed has invaded cropping areas, particularly where crops are rotated with pasture. In the absence of effective early control, deep-rooted statice plants can compete with crops for nutrients and moisture, reducing crop growth and yield potential. In dense stands, crop yield losses can be as high as 20 to 30%. Statice can also cause problems at harvest, with green leaf material often discolouring and contaminating grain.
Stewardship First SprayBest Guide
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. It is essential to check if these practices are acceptable to buyers, as in some situations markets have extremely low or even zero tolerance to some pesticide and herbicide residues.