Avoid Planting Canola in Wild Radish/Mustard Fields
Follow All UGA Recommended Production Practices Adapted Variety Planting Date –North Zone (September 10 to October 25) –South Zone (October 10 to November 15) Row Spacing (6-12”) Seeding Rate (4-6 lbs/A) Fertility Management
Herbicides For Use in Georgia Canola Glyphosate – at-planting but before crop emergence Treflan,Trilin, etc. –PPI Select/Arrow, Poast, Assure/Targa –POST (grass control) Beyond –POST –Clearfield varieties only!!!!
Trifluralin in Canola Incorporate to depth of 2- 3” within 24 hours of application 2-pass system lb ai/A some control of winter annual grasses, henbit, and chickweed no control of wild radish/mustard Better than nothing!
Clearfield Canola Production Systems Non-GMO Beyond (imazamox) is only herbicide registered for use in U.S. Based on UGA field trials, eliminates concerns for Cadre (imazapic) carryover problems. However, Clearfield canola is NOT listed on Cadre label.
Clearfield Canola varieties only!!!!! Beyond 1AS (imazamox) 4 oz/A % v/v + 2.5% v/v weeds less than 3” tall In UGA field trials, Beyond has provided good to excellent control of Italian ryegrass, wild radish and shepherd’s-purse when applied between 24 and 37 DAP. $515/gal ($16.09/A)
Weed Control in Clearfield Canola with Beyond 1AS (4 oz/A) + COC (1% v/v) + 37% UAN (2 qts/A) WeedTiming ’ ’Average Wildradish 24 DAP DAP Italian ryegrass 24 DAP DAP Henbit 24 DAP DAP Shepherd’s- purse 24 DAP DAP Wild garlic 24 DAP DAP Grey et al Weed Technology 20:
Stinger clopyralid labeled but not yet recommended by UGA 3 lb ai/gal 4-8 oz/A ($15-30/A) 2 to 6 leaf stage of canola 50 day PHI Canada thistle, sowthistle, dandelion, chamomile Rotations –0 months = field corn, wheat, barley, oats –10.5 months = grain sorghum, onions, sunflowers –18 months = all other crops
Other Types of Herbicide- Resistant Canola Roundup-Ready (RR) Liberty-Link (LL) both are not currently labeled for use in Georgia Why? –Developed after Georgia stopped growing canola on a commercial basis – varieties more susceptible to blackleg – volunteer problem in other RR crops – herbicide resistance issues
Weed Control in RR-Canola with Roundup Weathermax 5.5SL (22 oz/A) WeedTiming ’ ’Average Wildradish 24 DAP DAP Italian ryegrass 24 DAP DAP Henbit 24 DAP DAP Shepherd’s- purse 24 DAP DAP Wild garlic 24 DAP DAP Grey et al Weed Technology 20:
Weed Control in LL-Canola with Liberty 1.67SL (34 oz/A) + 21% AMS (3 lb/A) WeedTiming ’ ’Average Wildradish 24 DAP DAP Italian ryegrass 24 DAP DAP Henbit 24 DAP DAP Shepherd’s- purse 24 DAP DAP Wild garlic 24 DAP DAP Grey et al Weed Technology 20: