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cross resistance

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Catalogue: GRDC Updates (West)
Resistance to pre-emergence Sakura can be rare in ryegrass (high rate study) but R can evolve (low rate study); Same for Boxer Gold... There can be cross-resistance between trifluralin, Sakura and Boxer Gold; Resistance to pre-emergence Sakura can be rare in ryegrass (high rate study) but R can evolve (low rate study); Same for Boxer Gold... There can be cross-resistance between trifluralin, Sakura and Boxer Gold; Don't miss any opportunity to control ryegrass survivors, practice IWM!..
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Catalogue: Broadacre Field Crops DAFF QLD
The focus for the now named Australian Herbicide Resistance Initiative (AHRI) will continue to be on strategic and applied research aimed at minimising the adverse impacts of herbicide resistance and weed problems on Australian cropping... To achieve the national focus, there will be collaboration with the Department of Agriculture and Food in Western Australia, the Department of Agriculture, Fisheries and Forestry (DAFF) in Queensland and the Universities of Melbourne and Adelaide... The new research program extends from agronomic techniques for the management of crop weeds through to fundamental research on the molecular and genetic factors determining herbicide resistance evolution...
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Catalogue: Broadacre Field Crops DAFF QLD
The focus for the now named Australian Herbicide Resistance Initiative (AHRI) will continue to be on strategic and applied research aimed at minimising the adverse impacts of herbicide resistance and weed problems on Australian cropping... To achieve the national focus, there will be collaboration with the Department of Agriculture and Food in Western Australia, the Department of Agriculture, Fisheries and Forestry (DAFF) in Queensland and the Universities of Melbourne and Adelaide... The new research program extends from agronomic techniques for the management of crop weeds through to fundamental research on the molecular and genetic factors determining herbicide resistance evolution...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture and Food, Western Australia... In the lupin/wheat rotation, where simazine or atrazine are used in lupins, it follows that no diuron, bromoxynil or terbutryn is to be used in the cereal... Burning entire crop stubbles results in a high risk of wind erosion and is not recommended for most paddocks in Western Australia...
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Catalogue: GRDC Updates
Ryegrass and sow thistle were evaluated in this project; other weeds such as wild oats, wild radish, mustards, poppy, etc. are also developing resistance in this region... The aim of the project was to capture the current resistance status of a large sample of ryegrass and sow thistle; to key pre-emergent and post emergent herbicides in the western riverina region of SW NSW... What was very interesting was the level of resistance measured in samples with no expected resistance...
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Catalogue: GRDC Media
If there are multiple areas in a paddock, Dr Preston recommends testing them separately because resistances can vary across a paddock and so the combined result may not reflect the separate patches of resistance... In terms of cost-effectiveness of resistance testing, Dr Preston says if growers have a paddock of concern and want to know what herbicide options are available, then testing three or four options can be helpful... "To test for 3-4 herbicides, that will cost $350 to $400 which is a lot cheaper than spraying the paddock," he said...
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Catalogue: GRDC Updates
For most herbicide modes of action there is more than one resistance mechanism that can provide resistance and within each target site, there are a number of amino acid modifications that provide resistance... Only some of the mutations provide resistance to both groups of herbicides... Most target site mutations selected by fop herbicides can be controlled by clethodim...
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Catalogue: GRDC Media
Herbicide resistance testing: autumn 2014.. In terms of cost-effectiveness of resistance testing, Dr Preston says if growers have a paddock of concern and want to know what herbicide options are available, then testing three or four options can be helpful... "To test for 3-4 herbicides, that will cost $350 to $400 which is a lot cheaper than spraying the paddock," he said...
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Catalogue: GRDC Final Reports
It is possible that resistance alleles will spread to new areas highlighting the need to monitor field populations throughout the range of H. destructor... We aimed to determine if there is cross-resistance across multiple synthetic pyrethroids as Umina (2007) only tested bifenthrin and alpha cypermethrin... Doses representing the field rate contained 290 mg a.i./L of omethoate and 100 mg a.i./L fipronil...
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Catalogue: GRDC Final Reports
Insecticide resistance monitoring within this farming system complex was successfully completed for 2006/07 and 2007/08 and the results used to assess and formulate resistance management strategies... The finding is important, as the presence of resistance through a resistance mechanism already established in the field can result in unsatisfactory control and worsen the situation for the insecticides involved... The aim of the research is to continue to increase what is known about resistance frequencies and mechanisms to allow for accurate resistance detection and effective management strategies within the mixed grains/pulse/cotton farming system...
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