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fungicide use

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Catalogue: GRDC Final Reports
Fungicide use in the Australian grains industry has risen significantly in the past decade... A sufficient level of genetic resistance needs to be maintained, particularly in crops attacked by medium and high risk pathogens where the diversity of fungicides available is low... The chemical industry is being encouraged to introduce one or more of the eight modes of action that control mildew overseas or on grapes in Australia...
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Catalogue: GRDC Updates (West)
Blackleg and its management has become an important issue for canola in the coming seasons... As most of the canola cultivars, irrespective of the level of their adult plant resistance, are susceptible to infection by the fungus at the seedling stage (may be termed as 'seedling susceptibility window') and consequent canker formation the timing of ascospore release in relation to the onset of adult plant resistance provides information on the risk of blackleg... The risk of blackleg appears to be both location and season specific...
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Catalogue: GRDC Final Reports
Fungicide resistance was not identified, but more intensive fungicide use will increase the resistance risk in diseases such as barley powdery mildew and botrytis grey mould and chocolate spot, especially as one mode of action, demethylation inhibitor (DMI), dominates the market... Greater fungicide use increases the risk of resistance, particularly when a single mode of action (DMIs) dominates the market for both seed treatments and foliar sprays... Unnecessary use of fungicides increases the risk of resistance, and so it is essential that good, robust, yield loss data is available so that users can make informed decisions as to whether or not to apply a fungicide...
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Catalogue: GRDC Publications
" CAAblacklegresistanceratings2012 CAA Canola Association Supported by CAA Of Australia 2012 Blackleg RESISTANCE Ratings GENOTYPE.. Do not sow into canola stubble from the previous year... Growers may sometimes experience signi cant variability from the averages shown by these ratings...
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