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Catalogue: GRDC Media
Beet Western Yellows Virus (BWYV) has caused unprecedented damage to canola crops in south-east Australia this season, causing the GRDC to fund emergency research to analyse the outbreak and limit potential damage in future seasons... For growers who have severely infected crops and will suffer significant losses this year, this means no more measures can be taken to address the outbreak in those crops... Where growers have only patches of infection, or have crops not affected, Dr Davidson recommends close observation of the aphids...
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Catalogue: Ground Cover
Dr Graham Brodie working on his prototype microwave weed killer... Dr Graham Brodie from the University of Melbourne has developed the technology, using microwave horn antennae mounted on a trailer... The potential advantages of microwaves are that they generally kill weeds immediately and there are no residues, so potentially restrictive withholding periods for crops would not apply...
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Catalogue: Ground Cover
Research by the University of Western Australia (UWA) and grower groups has found that light grazing of sheep on crop residues over summer has little impact on the following no-till crops... Dr Ken Flower from UWA's School of Plant Biology and Institute of Agriculture led the study to see if summer grazing of residue had an impact on the following crop yields in the no-till system... The results showed that light grazing of sheep on crop residues had no significant effect on the amount of residue, soil properties, soil water, weeds or yield in the following crop...
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Catalogue: Ground Cover
Sensitive technology tightens residues compliance.. The National Working Party on Grain Protection (NWPGP) hosted the conference, in conjunction with Grain Trade Australia... Mr Reichstein told the conference there had been no discernible reduction in the incidence of flutriafol residues exceeding the MRL. Trace-backs showed contamination was most commonly the result of back-loading flutriafol-treated fertiliser deliveries with grain, or from equipment coming into contact with the treated fertiliser...
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Catalogue: Ground Cover
Sensitive technology tightens residues compliance.. The National Working Party on Grain Protection (NWPGP) hosted the conference, in conjunction with Grain Trade Australia... Mr Reichstein told the conference there had been no discernible reduction in the incidence of flutriafol residues exceeding the MRL. Trace-backs showed contamination was most commonly the result of back-loading flutriafol-treated fertiliser deliveries with grain, or from equipment coming into contact with the treated fertiliser...
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Catalogue: GRDC Final Reports
The review demonstrated the safety and natural occurrence of ethyl formate in the diet... In bin fumigant monitoring: In each trial, ethyl formate and CO 2 levels were measured in five critical places in the silos except Trial 6 in which measurements were taken from one position only... Monitoring systems: The Miran SapphIRe (Thermo Environmental Instruments) programmable infra-red gas analyser was used to measure ethyl formate without interference by CO 2 at occupational exposure levels (100 ppm) and below...
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Catalogue: GRDC Updates
Reducing spray drift - Keeping it in the paddock.. Biosecurity SA has been working with stakeholders on actions to reduce the risk of economic damage to commercial vineyards and other sensitive crops from off-target drift of herbicides and has held preliminary consultations on possible further actions, including regulation... Biosecurity SA is seeking comment from stakeholders on proposed amendments to the Agricultural and Veterinary Products (Control of Use) Regulations 2004 to reduce the risk of economic damage to commercial vineyards and other sensitive crops from off-target drift of Group I herbicides...
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Catalogue: GRDC Publications
The benefits improve crop health and crop competitive ability against weeds and the effectiveness of pre-emergent herbicides... When used as a post-emergent product, little of the herbicide gets to the roots and the control of established weeds is often very poor... benefits arise when the weed is prevented from setting seed as there are no increases to the seedbank and, as a consequence, fewer weeds in the future...
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Catalogue: GRDC Updates
In the study we examined the relative binding of these herbicides to different types of crop residue, the relationship between residue cover and herbicide interception, the early loss of herbicide from a dry residue and the relationship between rainfall amounts and wash-off of the herbicide... We used a batch-slurry technique where 1 gram of the crop residue was exposed to 10 mL of water containing the herbicides for 24 h under continuous shaking... The results suggest that although crop residue does intercept herbicides, the herbicides will wash off the residue with rainfall...
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Catalogue: Ground Cover
Canola growers are being urged to recheck label directions for products containing haloxyfop following changes to labels that clarify the correct timing for applying the herbicide... Herbicides containing haloxyfop as the active ingredient (such as Verdict 520, Asset or Inquest ) are the main choice among most growers... If this group of herbicides is used in canola and other oilseeds, it must not be applied after the eight-leaf stage of the crop, or if stem elongation has started before the eight-leaf stage...
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