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Canola Pest Control
Jim B. Davis
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WSU Oilseed Cropping
Systems Workshop
Thursday Feb 2, 2017
8:00 am - 5:00 pm
Registration begins at 7:30 a.m.
Quality Inn and Suites
700 Port Drive, Clarkston, WA
$20 registration included lunch
http://css.wsu.edu/biofuels/
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http://www.cals.uidaho.edu/brassica/
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Online Information
University of Idaho Brassica BreedingWSU Biofuels WebsitePNW Pest Management HandbooksPacific Coast Canola WebsiteU.S. Canola Association WebsiteCanadian Canola Council WebsiteCanola Encyclopedia Website
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Before seeding…
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Weed Control
Limited selection of herbicides
Good agronomic practices
Preplant glyphosate
Good plant establishment
firm seed bed, packers on drill
appropriate planting dates
Competitive stand
moderate seeding rategood insect control
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Herbicide-Resistant Canola
Roundup Ready Canola
High yielding spring varieties
Broad spectrum weed control
Liberty Link
High yielding varieties
Alternate mode of action
Possibly weak on some grasses
tank mix with grass herbicide
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Herbicide-Resistant Canola
Clearfield Canola
fewer plant back restrictions
tolerant to imidazolinone herbicides
often cross-tolerant to sulfonylurea
herbicides
non-GMO
very common mode of action (Group 2)
overuse increases chance of resistant weeds
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Traditional Weed Control
Preplant, Incorporated
Sonolan 10G or HFP (ethalfluralin)
Treflan TR-10, Triflurex HFP (trifluralin)
Postemergence Grassy Weeds
Select 2EC (clethodim)
Assure II, Targa (quizalofop P-ethyl)
Poast (sethoxydim)
Postemergence Canada Thistle
Stinger, Clopyr Ag (clopyralid)
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Flea Beetle
Crucifer Flea Beetle
Striped Flea Beetle
Hop Flea Beetle
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Flea Beetle
Seed TreatmentsHelix Xtra/Cruiser 5FSProsper 400Helix VibranceProsper Evergol
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Winter Canola, fall
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Can be a problem in new winter canola stands in the late summer.
Scout your fields regularly...
Grasshoppers
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Foliar Insecticides
lambda-cyhalothrin (Warrior…)
bifenthrin (Capture 2EC…)
zeta-cypermethrin (Mustang Maxx…)
chlorantraniliprole ,l-cyhalothrin (Besiege)
deltamethrin (Battalion 0.2 EC...)
gamma-cyhalothrin (Declare...)
flonicamid (Beleaf 50 SG aphidicide)
sulfoxaflor (Transform WG aphidicide)
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Insecticide Treatment
NoneSeed
Treatment FoliarSeed & Foliar
----------------- 1 to 9 ---------------
Control 1.21 c 5.31 b 5.69 b 7.68 a
-------------- lbs. per acre -------------
Yield 3,425 3,424 3,451 3,348
Fall-applied InsecticideEfficacy - 2011
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Insecticide Treatment
Year NoneSeed
Treatment FoliarSeed & Foliar
-------------- lbs. per acre -----------
2011 3,425 3,424 3,451 3,348
2012 4,276 4,499 4,143 3,925
2013 1,503 1,592 1,648 1,652
2014 1,251 a 1,474 ab 1,666 b 1,676 b
Fall-applied InsecticideEffect on Yield
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Rhizoctonia Stem and Root Rot
Caused by Rhizoctonia solani AG 2-1
(different that the wheat race)
-Damping-off(seedlings do not emerge)
-Wirestem(stem girdling in young seedlings)
-Root rot
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Wirestem
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Rhizoctonia
Control
Worst in fallow-planted winter canola?
Crop rotation?
Canola race harbored by other crops.
New seed treatments (with insecticides)
Prosper Evergol
Helix Vibrance
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Blackleg
Caused by a seed borne fungus. Leptosphaeria maculans aka Phoma lingam
Once it is established, can spread by splash or airborne spores.
Survives in crop residue, volunteers and weeds for years.
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Blackleg Life Cycle
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Blackleg Symptoms
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Blackleg Management
Prevention - Required by Idaho Law.
Start with disease-free, certified seed. (Phyto-sanitary certificate required for seed imported to Idaho.)
Use fungicidal seed treatments.
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Blackleg Management
Tillage - bury residue
Crop rotation - 3 years between canola or any mustard family crop.
Includes cover crops - turnips, radish, mustards, etc.
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Blackleg Management
-Use resistant cultivars.
-Foliar fungicides can reduce in-crop spread when present.
Tilt (3), Quadris (11), Quilt (3+11), Headline (11), Priaxor Xemium (7+11), Approach (11),
Proline 480 (3)
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Winter Canola, spring
Weed control
Disease control
Insect control
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Blackleg Life Cycle
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Blackleg Management
- Foliar fungicides can reduce in-crop spread.
- Protection from new infection only.
- Yield loss?
Tilt (3), Quadris (11), Quilt (3+11), Headline (11), Priaxor Xemium (7+11), Approach (11),
Proline 480 (3)
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Cabbage Seedpod Weevil
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Primarily a winter canola pest.
Threshold is 3 to 4 weevils per 180o sweep.
Cabbage Seedpod Weevil