Recommended
Recommended
More Related Content
Similar to OK Crop Improvement Association Meeting 2011--What is the goal of weed control in wheat?
Similar to OK Crop Improvement Association Meeting 2011--What is the goal of weed control in wheat? (17)
More from osuweedsci
Recently uploaded
Recently uploaded (20)
OK Crop Improvement Association Meeting 2011--What is the goal of weed control in wheat?
- 1. What is the goal of weed control in wheat? Joe ArmstrongOSU Extension Weeds Specialist
- 4. A “clean” field at harvest may not tell the whole story
- 5. The cost of dockage Reduced prices Wasted fuel Reduced yields due to weed competition
- 6. Yield must also be a goal!
- 7. Yield losses from 1 weed/ft2 Italian ryegrass = 11% wild oats = 13% jointed goatgrass = 17% cheat = 18% rye = 22% Adapted from Fast, Medlin, and Murray (2009)
- 8. Yield losses from3 weeds/ft2 Italian ryegrass = 17% wild oats = 22% jointed goatgrass = 20% cheat = 19% rye = 41% Adapted from Fast, Medlin, and Murray (2009)
- 9. Fall applications = highest yields 60 ≥ 85% weed control 55 Maverick 50 Wheat yield (bu/ac) 45 Olympus 40 35 14 28 42 56 70 84 98 112 126 140 154 168 Days after planting
- 10. PRE & Early POST herbicides Finesse Amber Maverick Axiom Prowl H2O
- 11. Untreated
- 12. Axial XL, 16.4 floz applied December 2
- 13. Axiom, 8 oz applied November 1
- 14. Timing is crucial with these products!
- 15. ALS-resistant ryegrass in OK 08-09: Confirmed in 17 counties
- 16. ALS-resistant Italian ryegrass Treated with Axial XL
- 17. Potential for resistance to Axial XL 16.4 floz1x rate 32.8 floz2x rate 65.6 floz4x rate Untreated
- 18. CenterfieldBeyond @ 4 fl oz in fall conventional varietyuntreated
- 19. hybrid wheat jointed goatgrass Wheat x jointed goatgrass hybrids show the importance of stewardship of the Clearfield trait
- 20. Contact information Joe Armstrong OSU Dept. of Plant and Soil Sciences joe.armstrong@okstate.edu Twitter: @OSUWeedSci www.weedscience.okstate.edu
Editor's Notes
- Minimize future weed problems by reducing weed seed production,prevent interference and loss of efficiency during harvesting,satisfy personal or landowner desire for clean fields.
- Minimize future weed problems by reducing weed seed production,prevent interference and loss of efficiency during harvesting,satisfy personal or landowner desire for clean fields.