Roadside Vegetation Management...Picture Taken July 21 Tall Fescue. Improving Pollinator Habitat •...
Transcript of Roadside Vegetation Management...Picture Taken July 21 Tall Fescue. Improving Pollinator Habitat •...
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Roadside Vegetation ManagementGrass Growth Regulation, Seedhead Suppression and Broadleaf Weed
Control
Jim BeanStrategic Accounts Manager
BASF Professional Vegetation Management Group
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Agenda
• What is a PGR program?
• History
• Benefits
• Mowing
• Issues by region
• Program details
• Results
• Pollinator habitat and native grass improvement
• Recommendations
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PGR Program • To regulate the height of grass and the development
of seedheads to minimize mowing. The addition of broadleaf weed control provides longer and more uniform results as broadleaf weeds typically grow taller than most grasses.
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PGR Program Goal
• Decrease mowing
• Decrease costs
• Increase productivity
• Improve safety
• Improve pollinator habitat and increase native grasses
• Create time for other important maintenance projects
• Minimize need for seasonal or temporary help
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Tall Fescue Seed Head Suppression Plot
Seedhead Suppression History
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Seedhead Suppression History
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2004 IL DOT PGR Results – 4WATPlateau 4.0 oz. + Escort 1/3 oz
Seedhead Suppression History
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Seedhead Suppression and PGR HistoryAlexandria, MN (2 MAT)
Smooth Bromegrass and Reed Canarygrass
4 oz. Plateau 24-30”
Untreated 40+”
6 oz. Plateau12-18”
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Grasses for Seedhead Suppression
• Tall Fescue
• KY Bluegrass
• Smooth Bromegrass
• Crested Wheatgrass
• Bermudagrass
• Bahiagrass
• Unimproved Centipede
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Problem Grasses Suppressed
• Reed Canarygrass
• Johnsongrass
• Smutgrass
• Vaseygrass
• Dallisgrass
• Japanese knotweed
• Phragmites
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2004 University of Tennessee Tall Fescue Height (in)
29.04.202011
0
5
10
15
20
25
30
35
40
check Plateau 2 Plateau 3 Plateau 4 Plateau 8
6/3/2004 7/15/2004
60+ day control
Application Early April 2004
Check Plateau 2 oz Plateau 3 oz Plateau 4 oz Plateau 8 oz
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2004 University of Tennessee Tall Fescue Seedhead Suppression
29.04.202012
0
10
20
30
40
50
60
70
80
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100
check Plateau 2 Plateau 3 Plateau 4 Plateau 8
4/30/2004 5/13/2004 5/19/2004 6/3/2004
60+ day control
Check Plateau 2 oz Plateau 3 oz Plateau 4 oz Plateau 8 oz
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Auburn Bermudagrass Trials
0
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46 DAT 60 DAT 88 DAT
PLATEAU 2 - 2,4 D 2 PLATEAU 3 - 2,4 D 2 PLATEAU 4 - 2,4 D 2 Untreated
Hei
ght i
n In
ches
60+ day control
Plateau 2 oz – 2,4 D 2 oz Plateau 3 oz – 2,4 D 2 oz Plateau 4 oz – 2,4 D 2 oz Untreated
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Auburn Bermudagrass Trials
0
2
4
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8
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46 DAT 60 DAT 88 DAT
PLATEAU 2 - 2,4 D 2 PLATEAU 3 - 2,4 D 2 PLATEAU 4 - 2,4 D 2 Untreated
Num
ber o
f see
dhea
ds
60+ day control
Plateau 2 oz – 2,4 D 2 oz Plateau 3 oz – 2,4 D 2 oz Plateau 4 oz – 2,4 D 2 oz Untreated
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Seedhead Suppression Lessons
• Use proper rates
• Calibration is critical
• Uniform application
• Add broadleaf weed control
• Dry conditions will extend PGR effects
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Recent History
• Increase in PGR programs• Lack of labor• Decreased mowing budgets• Need to accomplish more with less• Pollinator projects
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Benefits of an Integrated Vegetation Management Program
• Reduce Cost• 50% to 70% reduction
• Increase Productivity• 50% increase
• Improve Safety
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Benefits of an Integrated Vegetation Management Program
Case Study – Hillsborough County, FL
• 2005 – 6 mowing cycles, no PGR at a cost of $2.3 million
• 2007 – 2 mowing cycles ($780,000) and 2 PGR applications of 3 oz. Plateau + 3.5 oz. Milestone + 16 oz. Garlon 3A ($455,000) for a total of $1.2 million
• Annual cost savings: $1.1 million
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Benefits of an Integrated Vegetation Management Program
2013 INDOT Study
• One mowing costs $64 per mile and can cover 18.5 miles per day
• Average PGR costs $36 per mile and can cover 60 miles per day
• PGR programs are less expensive and more productive than mowing
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Benefits of an Integrated Vegetation Management Program
Other Benefits
• Less wear on equipment allows for longer replacement cycles
• Fewer mowers required
• More can be accomplished with fewer people (no temporary help)
• Additional maintenance projects can be completed• Drainage structure repairs• Culvert and storm sewer replacement• Ditch cleaning• And more!
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Mowing is Dangerous
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Mowing Cool Season Grass• Early mowing results in only 2 weeks of height control
• Mid-summer mowing results in 4 to 8 weeks height control
• Skip mowing until summer
• Better for pollinator species
Warm Season Grass• Seedhead growth is not reduced by mowing
• Mowing too low can scalp the grass and increase stress
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
East and Midwest• High rainfall
• Short spray season
• Invasive weeds
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
East and Midwest Problems• Cool season grass injury with wrong rates
• Native grass tolerance to Plateau
• Canada thistle, Teasel, Japanese knotweed and Phragmites
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2019 OH DOT Tank-mix3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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Products Plateau
Provides grass growth regulation and seedhead suppression at
low rates
Milestone
Provides long-term broad spectrum broadleaf weed control
Escort XP
Provides seedhead suppression and vine control at low rates
All products have CAUTION labels!
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Equipment
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Equipment
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Custom Blend in15 Gallon Returnable Drums
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Calibration
Uniform application at the desired rates is critical
Minimize overlap but prevent unsprayed strips
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2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
1 WAT
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2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
1 MAT
Untreated Treated
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1 MAT
2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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1 MAT
2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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1 MAT
2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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2 MAT
2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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2 MAT
2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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6 MAT
2019 OH DOT Results3 oz. Plateau + 7 oz. Milestone + 0.3 oz. Escort XP
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Results• One application held from late April until mid-summer
• Even with the extremely wet spring
• No more than one mowing was required• In many areas no mowing was needed
• Spraying without mowing improved efficiency• Resulted in no rutting of median or shoulders
• A cleanup mowing in fall was optional
• Many extra maintenance projects were completed with existing personnel
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Lessons
Maintain proper speed to achieve desired rates!
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Lessons
Many broadleaf weeds make it look like turf was thinned!
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Use a wider swath width to prevent median unsprayed strips!
Lessons
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Adjust swath width to maintain proper rate!!
Lessons
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Northern U.S. Timing
Without Mowing - Recommended Start spraying just as grass begins to grow (end of April) Spray vegetation before it becomes uneven in height Results in no rutting
After Mowing Spraying starts in mid May Wait 7 days after mowing before you spray Mowing starts vegetation even in height
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Southern U.S. Timing
Without Mowing - Recommended Start spraying after full grass green-up (early April) Spray vegetation before it becomes uneven in height Results in no rutting
After Mowing Spraying starts after full grass green-up (end of April) Wait 7 days after mowing before you spray Mowing starts vegetation at an even height
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Broadleaf Products to Compliment a PGR Program
Detail
Provides post-emergent control of difficult broadleaf weeds like
kochia, Russian thistle, pigweeds and marestail at low rates
Method
Provides long-term broad spectrum broadleaf weed control
Overdrive
Provides broad spectrum broadleaf weed control
All products have CAUTION labels!
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Tank-Mix Options
3 oz. Plateau + 5 oz. Milestone + 1 oz. Detail Drop the Escort XP will reduce potential for cool season grass injury
Reducing the Milestone rate prevents exceeding maximum use rate
Detail adds to control of tough weeds like marestail and pigweeds
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Active ingredient: Saflufenacil
Controls many difficult to control broadleaf weeds Kochia, Russian thistle, marestail and pigweed
Enhances browning
Limited soil activity
Non volatile
Caution label
Detail Review
N
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Detail Review
1 oz. Detail for Marestail control!
Before After
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Southeast • Best fit for PGR due to number of mowing cycles
• $27 million dollars for NCDOT mowing each year
• GADOT has historically been the largest PGR program• NC, MS, SC, TN have had large programs
• Seedhead suppression is very important - Bahiagrass • 8 to 16 weeks seedhead suppression with Plateau
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Southeast Problems
• Bahiagrass seedheads
• Johnsongrass – Outrider
• Dallisgrass – Plateau / Clethodim?
• Smutgrass - Velpar
• Marestail and pigweed – Detail
• ALS resistant Vaseygrass – Fall Clethodim?
• Repeated applications of Plateau can release Broomsedge – MSMA• Rotate your chemistry!
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Southeast
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Great Plains and the West • Native grass tolerance to Plateau
• Low rainfall - PGR harder to justify
• Invasive weeds - fire
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Great Plains and the West Problems• Kochia and Russian thistle – Detail
• Cheatgrass – 6 oz. Plateau minimum
• Leafy spurge – Overdrive or Plateau or Plateau + Detail
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Southwest • Low rainfall - PGR harder to justify
• Focus on mowed areas
• Higher elevations are good targets
• Invasive weeds
• Woody brush
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Southwest Problems• Mesquite - Method
• Kochia and Russian thistle – Detail
• Cheatgrass – 6 oz. Plateau minimum
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
PNW – West side • High rainfall
• Short spray season
• Invasive weeds
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
PNW Problems – West side• Crabgrass, nutsedge, foxtail, Johnsongrass, field
bindweed - Plateau
• Marestail – Detail
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Improving Pollinator Habitat• Mowing is harmful to pollinator habitat
• Create locations with no mowing or reduced mowing
• Change or drop the broadleaf weed component
• Change mowing timing
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Improving Pollinator Habitat• 3 - 4 oz. Plateau + 1 oz. Detail + .5 oz. Escort XP
• Shorter-term broadleaf weed control allows for pollinator germination the following spring
• Don’t mow. Wait to see what comes back naturally
• Plateau + Pendulum AquaCap is labeled for wildflower establishment – use species on label
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Improving Pollinator Habitat
3 oz. Plateau + 1 oz. Detail + .5 oz. Escort XPSprayed 3 years in a row then delayed mowing
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Options When managing for pollinator habitat
Drop the broadleaf component to release existing seed Use Plateau + Pendulum AquaCap for wildflower establishment Use Plateau tolerant seed mixes to aid in maintenance
3 oz. Plateau + 1 oz. Detail + .5 oz. Escort XPSprayed 3 years in a row then delayed mowing
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Plateau 4oz/ac 88 DATApplication Date: April 24Picture Taken July 21 Tall Fescue
Native Grasses• Plateau is labeled for native grass establishment and
maintenance
• Big bluestem, Little bluestem and Indiangrass are tolerant up to 12 oz. Plateau
• I recommend establishing native grasses first then introduce wildflowers as desired
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Northeast, Midwest, Southwest and PNW Use 3 oz. Plateau + 1 oz. Detail + 0.3 oz. Escort XP on Fescue and Bluegrass
after full grass green-up
Substitute 5 oz. Milestone or 4 oz. Method for the (Detail + Escort) for
longer broadleaf residual control
Use 4 - 8 oz. Plateau + 1 oz. Detail + 0.5 oz. Escort XP on Smooth
Bromegrass after full green-up
Substitute 5 oz. Milestone or 4 oz. Method for the (Detail + Escort) for
longer broadleaf residual control
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General Recommendations
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Southeast Use 4 – 6 oz. Plateau + 5 oz. Milestone or 4 oz. Method on Bermudagrass
after full grass green-up
Add Detail where marestail or pigweed control is required
● Use 1 oz. Detail only where temporary injury (leaf tip burning) to
Bermudagrass is acceptable.
Use 3 oz. Plateau + 5 oz. Milestone or 4 oz. Method on Bahiagrass or
unimproved Centipede after full grass green-up
Use no more than 2 oz. per acre of Plateau applied at seeding of
Centipede
Do not use Detail on actively growing Bahiagrass
Rotate to MSMA to prevent broomsedge release65
General Recommendations
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We want to help improve roadside vegetation
management
Webinars available upon request
Please share pictures
Greg Armel is an excellent resource
Let us know how we can help
66
Summary