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Catalogue: GRDC Media
The early and effective control of summer weeds is critical if northern growers are to maximise stored soil moisture and nutrients for next season's crops... In a bid to increase industry knowledge of the latest research and development outcomes and best practice recommendations on control tactics for summer grass weeds, the Grains Research and Development Corporation (GRDC) is holding two webinars on grass weed control on Wednesday December 3 and Wednesday December 10... Mr Congreve said planning a coordinated and effective strategy to control in-crop and fallow weeds, particularly problem grassy weeds, would help growers maximise crop yields while delaying the development of resistance on the farm...
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Catalogue: GRDC Media
Well managed weed control plays a vital role in the production of profitable winter crops as weeds can have a significant impact on yield by competing for moisture, nutrients, space and light as well as harbouring diseases... Most growers understand that weed control needs to be considered on a whole-of-farm basis, being particularly conscious of the cropping and chemical rotations where residual herbicides are applied... Residual herbicides are applied to the soil in order to kill weeds by root/shoot uptake and can remain active in the ground for a few weeks up to a few years...
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Catalogue: GRDC Updates
Frost in the few days after clethodim application reduces activity of the herbicide on annual ryegrass.. The best management for clethodim resistant annual ryegrass in break crops is a pre-emergent herbicide followed by a mixture of clethodim plus butroxydim on small ryegrass plants.. Surveys across South Australia and Victoria from 2005 show an increase in incidence of resistance to herbicides in annual ryegrass populations (Table 1)...
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Catalogue: GRDC Media
Northern region grain growers are being urged to get on top of summer weeds early in fallow paddocks in order to minimise nutrient and moisture loss and increase the yield potential of next season's winter crops... New research has shown that coarser droplet size can be more effective in controlling weeds in summer fallow situations, and can reduce the risk of spray drift... "If spraying to conserve soil moisture and retain nutrients over summer, early weed fallow control can increase the yield potential of future crops," GRDC Northern Panel Chair James Clark said...
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Catalogue: GRDC Media
The continuing spread of herbicide resistance in weeds and the threat this poses to farming systems in the southern cropping region is the most widely significant issue confronting grain growers... Panel members have just returned from a week-long tour of parts of the southern cropping region where the development of herbicide resistance in rye, barley and brome grasses and broadleaf weeds such as wild radish was underlined as a critical issue... The medium rainfall zone tour involved visits to Pinery, Balaklava, Hart, Clare, Tarlee, Roseworthy, Turretfield, Keith, Sherwood and Bordertown in SA, and Gerang Gerung, Horsham and Longerenong in Victoria...
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