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multiple resistance group

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Catalogue: GRDC Updates
Blackleg: developing a prioritised management strategy.. Newly deployed novel sources of resistance remain effective for a number of years before virulent blackleg isolates increase in frequency to a level where significant disease results... We can use the fungal life traits to manipulate the fungal population...
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Catalogue: GRDC Updates
If you sow the same cultivar every year you are likely to break the cultivar's blackleg resistance... If you have a blackleg problem and are growing a susceptible cultivar your first action should be to change to a cultivar with higher levels of resistance... The best policy is to monitor the level of blackleg in your cultivar on your farm, if you observe the level of disease increasing then switch to a different group...
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Catalogue: GRDC Updates
The blackleg fungus, Leptosphaeria maculans, has a high propensity to overcome resistance in Brassica napus (canola) cultivars... If you have a blackleg problem and are growing a susceptible cultivar your first action should be to change to a cultivar with higher levels of resistance... The best policy is to monitor the level of blackleg in your cultivar on your farm, if you observe the level of disease increasing then switch to a different group...
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