Weed Management

1. Weed Management

2. Weed Management Tools • Rotation • Fast, uniform growing crop • Cultivation • Herbicides

3. Herbicide Usage

4. Prowl 3.3E • Common name: Pendimethalin, • Dinitroaniline, prevents separation of chromosomes during mitosis • similar to Balan, Surflan, Treflan, Prime + • Rate: 1.8 - 2.4 pts (1.5 pts) • Application: PPI and Layby (directed) • should be incorporated for max. control • annual broadleaf weeds and grasses

5. Prowl 3.3E • Can cause injury to tobacco • Stunted and club-like roots • more of a problem on sandy soils • poor incorporation • high rate • If used with Spartan: Prowl PPI, Spartan PRE-T

7. Poast 1.5EC • Common name: Sethoxydim, BASF • Inhibits ACCase, blocks building of new membranes • similar to Select and Achieve • Rate: 1-1.5 pts • 2 pts crop oil or 1 pt DASH • Application: POST over-top • 42 d prior to harvest • Annual and perennial grass control

8. Poast 1.5EC • Applied to actively growing weeds • Up to 42 before harvest • One of two remedial control herbicides labeled on tobacco • Phyto possible on tender tobacco because of adjuvant

9. Tillam 6E • Common name: Pebulate • Thiocarbamate, inhibits biosynthesis of lipids, proteins, fatty acids, etc. • weeds fail to emerge • similar to Sutan, Bolero, Vernam • Rate: 2.7 qts • Application: PPI • annual grasses, some broadleaf weeds • some nutsedge suppression

10. Tillam 6E • Breakdown in control (grasses) during the season is not unusual • Can cause stunting • uneven growth, restricted root growth

11. Devrinol 50DF • Common name: Napropramide • Acetamide: Inhibits cell division • somewhat similar to Lasso, Frontier, and Dual • Rate: 2 - 4 lbs • Application: PPI, POST-OT and Layby • annual grasses and some broadleaf weeds • Rotation restriction with small grain

12. Devrinol 50DF • Breakdown in control (grasses) during the season is not unusual • Can cause stunting • uneven growth, restricted root growth

13. Command 3ME • Common Name: Command, FMC • Carotenoid Biosynthesis Inhibitor, weeds emerge, but are bleached white and die within several days • Loosely similar to Zorial, Sonar and Amitrol • Rate: 2 - 2.67 pts • Application Timing: PRE-T, PPI, and POST-T (overtop within 7 days) • Annual broadleaf and grass weeds

14. Command3ME • Rotation restrictions: • 12 months for small grains and vegetables • High drift potential • Do not apply: • Winds over 10 mph • Over 30 PSI • Within 1,200 ft of non-target sensitive plants • ornamentals, vegetables etc.

18. Aim Shielded or Hooded Spray Prior to Layby Directed After First Harvest Some small broadleaf weeds Pigweed and Morningglory Common Name: Carfentrazone PROTOX Inhibitor, Cell membranes leak

19. Spartan 4F • Common name: Spartan, FMC • Aryl Triazinone, PROTOX inhibitor, cell membranes begin to leak • similar to Blazer, Reflex and Goal • Rate: 8.0 - 12.0 ounces • Application: PRE-T and PPI • Broadleaf weeds and sedges • some grass suppression

20. Spartan 4F • 18 month rotation restriction on cotton • For adequate grass control, grass herbicide must also be used • Can cause stunting especially when incorporated • Weed control reduced from PRE-T in dry years • “Reach-back” potential is high

21. Distribution of Cotton and Tobacco Acreage Cotton Tobacco

22. Spartan • Can be applied PPI or PRE-T • PPI • Can injure tobacco • PRE-T • Not convenient for growers

23. Spartan Charge • Aim/Spartan PreMix • No need for Aim Pre Tobacco Production • Check the label for equivalent rates of Spartan 4F

30. Aminopyralid • Forefront • Milestone • Auxin Mimic • Drift • Carryover

31. Ignite(1/32nd full rate)

32. Ignite (1/16th full rate)

33. Ignite (1/8th full rate)

34. Ignite(1/4 full rate)

35. Ignite (1/2 full rate)

36. Dicamba(1/512th full rate)

37. Dicamba(1/128th full rate)

38. Dicamba(1/32nd full rate)

39. Dicamba(1/8th full rate)

40. Dicamba(1/2 full rate)

41. 2,4-D (1/512th full rate)

42. 2,4-D (1/128thfull rate)

43. 2,4-D (1/32nd full rate)

44. 2,4-D (1/8th full rate)

45. 2,4-D (1/2 full rate)