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2011 Basics of Weed Control
This document summarizes a presentation on turfgrass weed identification and management. It identifies several common cool season and warm season weeds like wild garlic, henbit, chickweed, and crabgrass. It discusses pre-emergence herbicide options for crabgrass prevention when soil temperatures rise in the spring. Cultural practices to promote turfgrass density are outlined, including fertility, mowing, and improving soil and drainage. The resources section provides links to a Tennessee website for more information on turfgrass and weed identification.
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2011 Basics of Weed Control
- 1. J.T. Brosnan, Ph.D. T.J. Samples, Ph.D. UT Lifetime Learning Program February 18th, 2010 Knoxville, TN
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- 6. Wild Garlic Perennial from bulb Hollow, cylindrical stems Foliage aromatic when crushed
- 8. Star of Bethlehem Sob pic Perennial from bulb Hollow stems Foliage NOT aromatic when crushed
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- 11. Henbit Square Stem Hairy No Petiole on Upper Portions
- 12. Purple Deadnettle Henbit, deadnettle pics Petioles Purple in color when mature
- 14. Common Chickweed Chickweed pic Wet, shady areas Egg shaped leaves
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- 17. Rough, athletic fields, home lawn Annual Bluegrass
- 18. Photo by BobRaley
- 19. Photo by BobRaley
- 20. What are theproducts? TRADE ACTIVE NAME INGREDIENT
- 21. What are theproducts ? TRADE NAME ACTIVE INGREDIENT
- 22. What Now??? Glyphosate (Roundup) • < 1 pt/A as broadcast • COMPLETELY DORMANT BERMUDAGRASS • Combine with PRE?? Phenoxy herbicides • Three-Way/Weed-B-Gone on TF and B • Dismiss for SOB No poa products for homeowners Revolver for LCOs on B
- 23. Spot Treatments Follow the label 1-1.5% solution WILL KILL DESIRABLE VEGETATION
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- 26. Photo by: D.F.Lewis
- 27. Photo by: D.F.Lewis
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- 31. PREEMERGENCE BEFORE YOU CAN SEE IT
- 32. Soil temp ≥55°F for 3 consecutive days and nights
- 33. All PRE products effective (>90% control) in 2010 for up to 100 days after application
- 34. What are theproducts? TRADE NAME ACTIVE INGREDIENT Dimension dithiopyr Pendulum pendimethalin Barricade prodiamine Ronstar oxadiazon**
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- 39. At least ½”irrigation within 24 hrs of application
- 40. Seeding pic DO NOT APPLY IF YOU PLAN TO SEED
- 41. I missed my crabgrass timing!!!!
- 42. Dimension Tenacity Acclaim Extra Fusilade II Drive XLR8 MSMA MSMA + Sencor
- 43. Cultural Practices toIncrease Turf Density
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- 47. Fertility Bermudagrass lawns • 1 lb N/1000 sq. ft • Every month of growing season Tall fescue lawns • ½ lb N/1000 sq. ft. APRIL, MAY • 1 lb N/1000 sq. ft. SEPTEMBER, OCTOBER, NOVEMBER
- 48. Without Nitrogen With Nitrogen Photo Courtesy of M.J. Schlossberg
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- 57. Good Balance ofAir and Water
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- 60. White Clover clover
- 63. Yellow Nutsedge Nutsedge Bermuda infestation pic
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- 67. Summary Identification Product Selection Cultural Practices Indicators Resources
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