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Control of Downy brome in grass grown for seed

Control of Downy brome in grass grown for seed. Daniel A. Ball, CBARC Sandra M. Frost. Bromus tectorum L. Mediterranean Aggressive winter annual weed Spring forage Problem in winter wheat and perennial grass. Bromus tectorum L. Fine hairs on leaves Panicle dense, slender

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Control of Downy brome in grass grown for seed

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  1. Control of Downy bromein grass grown for seed Daniel A. Ball, CBARC Sandra M. Frost

  2. Bromus tectorum L. Mediterranean Aggressive winter annual weed Spring forage Problem in winter wheat and perennial grass

  3. Bromus tectorum L. • Fine hairs on leaves • Panicle dense, slender • Seeds narrow with awns

  4. Bromus tectorum L. • Annual precip 6 to 22 inches • Many soil conditions and habitat types • Seed germinates late summer • Seed mature after 1800 GDD (base 32F) • Seeds viable in soil 2 to 3 years

  5. Labeled for Downy brome • Outlook (6EC) at 14 to 21 oz product / A • Dimethenamid • Sencor 75DF at 0.5 lb/A (75W) • metribuzin • On established, dormant grasses

  6. Cultural control • Crop rotation • Moldboard plow • Tillage before seed emergence • 1800 GDD, base 32F • Pre-plant control • Tillage • Herbicides – Roundup

  7. CRP tolerance trial • Established stand seeded 9/2000 • PRE applications 9/2001

  8. Herbicides

  9. Timothy tolerance

  10. Thickspike wg tolerance

  11. Bluebunch tolerance

  12. Sandberg tolerance

  13. Big bluegrass tolerance

  14. Sheep fescue tolerance

  15. CRP tolerance trial • Established stand seeded 2000 • Applications made • PRE 9/2001 • POST 11/2001

  16. Timothy tolerance

  17. Bluebunch wheatgrass

  18. Sandberg bluegrass

  19. Big bluegrass

  20. Perennial ryegrass

  21. Chewings fescue

  22. Tall fescue

  23. Kentucky bluegrass

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