Bret Rush PBI - Gordon Representative Indiana & Illinois

1. Bret Rush PBI - Gordon Representative Indiana & Illinois

2. Today’s agenda • * A few things to think about… • * Weeds & Herbicides. • * New Formulation Technology • * Questions ??

4. 2 Ft. of Snow!

5. It’s coming !!

9. When do I apply Post-emerge Herbicides • The weed must be actively growing in order to get control. • Depending of the weed species in your lawn you may need to make an early spring application to control over-wintering annual and perennial weeds • Common early spring weeds include: • Dandelions, Clover, Chickweed, Henbit, and Mallow

10. When do I apply? (cont.) • Summer is generally not a good time for weed control. The hot dry conditions of summer causes the weeds to quit growing in order for the plant to conserve moisture. Also the turf may be stressed by these conditions. • These weeds are best controlled with a late spring application--not summer: • Knotweed • Spurge • Purslane • Plantains • Oxalis • and others

11. Broadleaf Herbicidesand how they work • Different herbicides work well on specific weeds • 2,4-D has superior control on dandelions and plantain. • While MCPP (Mecoprop) provides strong clover, chickweed and black medic control. • Dicamba has excellent control on knotweed. When reacted together under the proper conditions, these three herbicides become stronger and more effect on more weeds than if use separately or just mixed together.

12. 1. Understand the weeds you deal with • Lifecycles • Perennial • Annual • Winter • Summer • Biennial (not many in turf)

13. Perennial Weeds • Dandelion* • White clover* • Broadleaf plantain* • Creeping Charlie (Ground Ivy) • Wild violet • Mouse-ear chickweed*… • Best time for controlof perennial weeds?

14. Fall

15. Life cycle of an annual weed Plant dies Dead Seed Seedling Plant sets seed Plant flowers

16. Life cycle of a winter annual weed Summer Fall Dead Seed Germination Plant sets seed Spring Winter

17. Winter Annuals • Common chickweed* • Henbit • Common mallow • Corn speedwell… • Best time for control • Fall

18. Life cycle of a summer annual weed Spring-Summer Fall Plant dies Dead Seed Germination Seedling Plant sets seed Plant flowers Spring-Summer

19. Summer Annuals • Prostrate spurge* • Prostrate knotweed** • Black medic • Yellow woodsorrel • Common purslane • Best time for control • Spring/Early Summer

24. 3. Ester vs. Amine • Ester Formulations (Oil based) • Faster • Better in cool weather • Increased volatility • Amine Formulations (Water Based) • Slower • Better in warm weather • No volatility

25. High & low volatile esters • High Volatile Esters • 2,4-D ethyl ester • 2,4-D butyl ester • 2,4-D iso-butyl ester • Low Volatile Esters • 2,4-D ethyl hexyl ester • 2,4-D iso-octyl ester

26. Amine (Water based) Trimec on 5-10-2013 Sprayed on 5-4-2013 Soil Temp: 40⁰ Air Temp: 37⁰ Ester (Oil based) SpeedZone on 5-10-2013 Sprayed on 5-4-2013 Contains Carfentrazone Soil Temp: 40⁰ Air Temp: 37⁰

27. Trimec 992 on 5-10-2013 Sprayed on 5-4-2013 (Air Temp: 37⁰F, Soil Temp 40⁰F)

28. SpeedZone on 5-10-2013 Sprayed on 5-4-2013

29. Trimec 992 on 5-15-2013 Sprayed on 5-4-2013

30. SpeedZone on 5-15-2013 Sprayed on 5-4-2013

31. 3 gals./1,000 sq. ft. 1 gal./1,000 sq. ft. Which applies MORE herbicide?? SAME RATE: Per 1,000 Square Feet

32. ?? Call someone Follow label directions

33. Low Volume 1 gallon/1,000 sq. ft. or 44 gallons/acre

34. High volume 3 gallon/1,000 sq. ft. or 132 gallons/acre

35. Do you use backpacks?

36. Low volume-flat fan

37. Higher Volume – Hollow cone

38. Flat fan nozzles should only be held in a stationary position while spraying.

39. Attached to a backpack sprayer

40. What happened?

41. Spray wand turned sideways “swinging arm motion” resulting In a zig zag pattern. Spray wand held correctly, non-swinging arm motion providing a flat band pattern Slide of Spray Techniques Used For Training of Applicators Glyphosate mis-application

42. Uniform weed or insect control?

43. Flat fan nozzle turned sideways using a “swinging arm motion” Drying Patterns Initially the pattern appears uniform

44. Over application in others areas can result in injury. Uneven pattern-- under application can result in poor control Drying Patterns Zig Zag pattern is starting to show

45. Over Application As the spraying pattern continues to dry, under application becomes more obvious. Drying Patterns Uniform weed or insect control?

46. Boom sprayer – clogged nozzles

47. CALIBRATION CALIBRATION CALIBRATION

48. Calibration

49. Spray Rate vs SprayVolume RATE: Per 1,000 Square Feet