downy rose myrtle herbicide field trial by elroy timmer n.
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Downy Rose Myrtle Herbicide Field Trial by Elroy Timmer. Cooperators SFWMD. Aquatic Vegetation Control, Inc . Funding By BASF DOW. Vanquish and Krenite The Best Two Treatments in 2007. 2007 Twenty Acre Treatment.

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downy rose myrtle herbicide field trial by elroy timmer
Downy Rose MyrtleHerbicide Field Trial by Elroy Timmer

Cooperators

SFWMD

Aquatic Vegetation

Control,

Inc.

Funding

By

BASF

DOW

2007 twenty acre treatment
2007 Twenty Acre Treatment
  • Vanquish at 2 quarts per acre
  • Treatment by AVC for SFWMD
slide9

Gallberry

Hat Pins and Bog Buttons

downyrose myrtle treatments 2008
Downyrose myrtle Treatments 2008

oz

plus

oz

% Cntl

____________________________________________________________________

  • Arsenal Powerline Conquer oil 7.5% 32 83
  • Arsenal Powerline 32 75
  • Arsenal Powerline 24 Garlon 4 Ultra 64 93
  • Weedmaster 64 58
  • Weedmaster 32 Vanquish 32 73
  • Arsenal Powerline 24 Vanquish 32 76

7. Arsenal Powerline 32 Glyphosate 112 82

8. Vanquish 64 78

9. Krenite 768` 82

10. Vanquish 32 Krenite 384 78

11. Arsenal Powerline 32 Krenite 128 85

12. Weedmaster 64 Krenite 128 62

downyrose myrtle treatments
Downyrose myrtle Treatments

oz

plus

oz

%Cntl

______________________________________________________________________

  • Vanquish 32 Overdrive 4 oz 70
  • Vanquish 32 Overdrive 4oz Vista 42 92
  • Garlon 4 Ultra 15% (37.5 gpa) (Cut Stump) 89 Labor 60 hours per acre
  • Garlon 3A 384 80
  • Garlon 4 Ultra 248 82
  • Vista 42 57
  • Garlon 4 Ultra 256 Vista 42 81
  • Milestone VM 14 28
  • Vanquish 32 Garlon 4 Ultra 128 90
  • Vanquish 32 Garlon 4 Ultra 128 Vista 42 88
arsenal at recommended use rate of 48 oz per acre
Arsenal at recommended use rate of 48 oz per acre
  • Arsenal 1% = 37.5 gpa
  • Arsenal 2 % = 18.75 gpa
  • Arsenal 3 % = 12.5 gpa
  • Arsenal max label rate 96 oz
garlon 4 ultra 15 cut stump treatment
Garlon 4 Ultra 15%Cut Stump Treatment
  • 37.5 gal per acre of oil and Garlon mix
  • Treated 1/100 Acre
  • 5.625 Garlon 4 Ultra per acre
  • Per acre rate equals almost 3x label rate
  • 60 hours labor per acre plus supervisors = approximately $1,400.00
  • Approximately $900.00 herbicide
sfwmd test
SFWMD TEST
  • Plot Layout
  • Types of plots
  • Plant height influences control
slide19

Example of Buggy path through tall 1/8 acre Downyrose myrtle plot

74 ft.

H

N

M

N

O

J

L

K

15 feet

K

32 feet

10 ft.

G

H

I

10 ft.

E

D

E

F

C

A

B

B

The 1/8 acre plots are (74 x74 ft). Rate was 100 gpa or 12.5 gal. per plot. The spray tip was calibrated at 1.32 gal per minute, it took 9.46 minutes to deliver 12.5 gallons. Plot was made up of 15 subplots A-O. Each subplot was treated with appropriate seconds to apply the proper rate . A, C, D, F, G, I, J, L, M, and O required 51 seconds. B, E, H, K, and N required 12 seconds. Pump produced 1.32 gpm. A stock solution of 33 gallons was used to treat two plots. The remaining 8 gallons was applied outside of the plot.

slide20

Example of 1/4 acre tall Downyrose myrtle plot, treated at 100 gpa

Buggy trail

B

A

C

Plots are 104 x 104 feet. Each subplot (example A and C) on each side of the 10 foot buggy trail is about 21 feet wide, by 15 feet (the length of the buggy). After the buggy moved ahead, the buggy trail (B)(15 x 10 feet) was treated. Each pass though the plot required 12.5 gallons or 9.46 minutes. Both passes required a total of 25 gallons and 18.92 minutes . Subplots such as A and C (21 x 15 feet) required 35 seconds while subplots such as B ( 15 x 10 feet) required 11 seconds. A 33 gallon stock solution was used to treat each plot. The 8 gallon remaining solution was used to treat areas outside the plot. Each pass through the plot required 7 stops at 15 feet each (7x15 = 105 feet)

slide21

Typical 1/8 acre short Downyrose myrtle plots. Treated by hand, red arrow lines depicts approximate path of applicator

These 1/8 acre plots were divided in ½ to make treatment more manageable. They were treated at 50 gpa. or 6.25 gallons per plot . Each half required 3.125 gallons and 2.36 minutes or 2 minutes and 22 seconds per ½ plot. The center of each plot was marked for applicators perspective.

slide22

Example of hand tank plots (Vanquish) treated at 50 gpa

A

B

= 30 seconds

11 feet

= 19 seconds

9 feet squared

12 feet

C

= 19 seconds

9 feet squared

17 feet squared

D

66 seconds

Each plot was measured and calculated for a percent of an acre. Example A, (11 x 112 feet = 132 square feet) or 0.003099174 of an acre. It was calculated that 4.37 square feet could be treated per second. The square feet per plot was divided by 4.37 to equal seconds per plot. (135 / 4.37 = 30 seconds). The tip used was a Spray Systems 2504 tip at about 20 psi. The spray tank is filled to 100 psi but spray tip delivers a constant pressure of 20 psi at the tip, via a regulator. A one gal stock solution was used. (1/50 of an acre) Excess solution was used to treat surrounding Downyrose myrtle in the area.

aquatic vegetation control
Aquatic Vegetation Control

Is there any questions?

Thank you

Salvador Medina