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resistance group

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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 Factsheets
WESTERN, NORTHERN AND SOUTHERN REGIONS QUANTIFY THE RISK, PADDOCK BY PADDOCK Blackleg can cause severe yield loss, but can be successfully managed... If you have: high or increasing levels of blackleg in your crop (from monitoring disease levels each year); used the management practices outlined in Step 3; and sown cultivars from the same resistance group in close proximity (within 2km) for three or more years, then sow a cultivar from a different resistance group (see page 4 - Blackleg Resistance Groups)... To facilitate the process, all cultivars have been placed into groups (A to H) based on their resistance genes inTable 3...
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Catalogue: NVT Online Papers
Choose a cultivar with adequate blackleg resistance for your region... For individual site results consult the NVTonline website... Background: Blackleg disease can be minimised by a number of factors including sowing cultivars with high blackleg resistance, avoid sowing canola in close proximity to last year's stubble and applying fungicides (see the current Blackleg Management Guide for details www.grdc.com.au)...
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Catalogue: GRDC Factsheets
WESTERN AND SOUTHERN REGIONS QUANTIFY THE RISK, PADDOCK BY PADDOCK Blackleg can cause severe yield loss, but can be successfully managed... Choose a cultivar with adequate blackleg resistance for your region... Blackleg is a sexually reproducing pathogen that will overcome cultivar resistance genes...
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Catalogue: NVT Online Papers
Choose a cultivar with adequate blackleg resistance for your region... For individual site results consult the NVTonline website... Page 6 of 15 2013 Blackleg monitoring sites - Beckom NSW Background: Blackleg disease can be minimised by a number of factors including sowing cultivars with high blackleg resistance, avoiding sowing in close proximity to last year's canola stubble and applying fungicides (see the current Blackleg Management Guide for details www.grdc.com.au)...
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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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Catalogue: GRDC Factsheets
WESTERN AND SOUTHERN REGIONS QUANTIFY THE RISK, PADDOCK BY PADDOCK Blackleg can cause severe yield loss, but can be successfully managed... Choose a cultivar with adequate blackleg resistance for your region... If you have: high or increasing levels of blackleg in your crop (from monitoring disease levels each year); used the management practices outlined in Step 3; and sown cultivars from the same resistance group in close proximity (within 2km) for three or more years, then sow a cultivar from a different resistance group (see page 4 - Blackleg Resistance Groups)...
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Catalogue: Ground Cover
Canola growers in high-risk areas now have two extra weapons in their arsenal against the disease blackleg: the option to rotate resistance groups and a newly registered foliar fungicide, Prosaro 420 SC... It covers: determining your farm's risk of blackleg based on rainfall, canola intensity in the region and March-to-May rainfall before sowing; assessing the severity of blackleg in your crop; following best practice to reduce the risk of blackleg; and rotating blackleg resistance groups if you are in a high-risk area... Dr Marcroft says Prosaro , applied at the four-to-six-leaf stage at 375 to 450 millilitres per hectare, can significantly reduce the presence of blackleg in high disease-pressure situations in varieties with a resistance of moderately resistant to moderately susceptible (MR-MS) or weaker...
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Catalogue: Ground Cover
Canola growers in high-risk areas now have two extra weapons in their arsenal against the disease blackleg: the option to rotate resistance groups and a newly registered foliar fungicide, Prosaro 420 SC... It covers: determining your farm's risk of blackleg based on rainfall, canola intensity in the region and March-to-May rainfall before sowing; assessing the severity of blackleg in your crop; following best practice to reduce the risk of blackleg; and rotating blackleg resistance groups if you are in a high-risk area... Dr Marcroft says Prosaro , applied at the four-to-six-leaf stage at 375 to 450 millilitres per hectare, can significantly reduce the presence of blackleg in high disease-pressure situations in varieties with a resistance of moderately resistant to moderately susceptible (MR-MS) or weaker...
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Catalogue: GRDC Factsheets
WESTERN, NORTHERN AND SOUTHERN REGIONS QUANTIFY THE RISK, PADDOCK BY PADDOCK Blackleg can cause severe yield loss, but can be successfully managed... If you have: high or increasing levels of blackleg in your crop (from monitoring disease levels each year); used the management practices outlined in Step 3; and sown cultivars from the same resistance group in close proximity (within 2km) for three or more years, then sow a cultivar from a different resistance group (see page 4 - Blackleg Resistance Groups)... To facilitate the process, all cultivars have been placed into groups (A to H) based on their resistance genes inTable 3...
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