logical sequence for weed weed management in right-of-ways...
TRANSCRIPT
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Weed Management in Right-of-Ways and other Non-Crop Areas
Matthew Matocha, M.S.
Extension Program Specialist – Weed Science
Texas A&M AgriLife Extension Service
College Station, TX
Logical Sequence for Weed Management
1. Weed Identification- What is the plant you are trying to control ?
broadleaf weed ?grass weed ?sedge ?
annual , biennial or perennial ?
Grasses
1. Monocots (one cotyledon leaf)2. Hollow stems, not solid
3. Leaves arranged in 2 vertical rows
Sedges
1. Triangular, solid stems2. Leaves arranged in three vertical
rows
Broadleaves
1. Two seedling leaves2. Showy flowers
Annual weeds have limited root systems and are easier to control than perennial weeds.
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Annual Broadleaf Weeds
Bitter SneezeweedPrickly Poppy
Annual Broomweed
Wooly Croton(Doveweed, Goatweed)
Marshelder
Groundsel
Perennial Weed Root Structures
Perennial Broadleaf WeedsWestern Ragweed
Silverleaf Nightshade
Carolina Horsenettle
Texas Bullnettle
Texas Thistle Buttercup
Common Milkweed
False Indigo
Johnsongrass
Perennial
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Perennial Grass Weeds
KR Bluestem
Dallisgrass
Knotroot Bristlegrass
Bahiagrass
Dallisgrass
Warm-season perennial
Right of WayVegetation Management
What are you trying to do?
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Options
• Selective herbicides – only kill weeds
• Non-selective – kills most plants
• Non-selective persistent – kills all plant and persists for weeks - months
*Google this:
Arundo donax (Giant reed)
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(imazapyr)
(Glyphosate)
(imazamox)
(22.6%)
(21.8%)
Bayer Non-Crop products –currently labelled
Uncultivated areas, non-crop producing like highway and utility rights-of-way, wildlife management areas, non-irrigation ditchbanks
Method 240 SL – aminocyclopyrachlor --Many broadleaf weeds and brush like huisache and mesquite, dewberry
Streamline – aminocyclopyrachlor + metsulfuron – many broadleaf weeds, brush and rose ssp., and cedars.
Perspective – aminocyclo. + chlorsulfuron – added spectrum and PRE activity.
New and Potential Product Components containing aminocyclopyrachlor --
Invora = Aminocyclopyrachlor + Triclopyr amine
(pasture label)
Rejuvra = Aminocyclopyrachlor + Metsulfuron-methyl
(Streamline—non crop)
Perspective = Aminocyclopyrachlor + Chlorsulfuron
(non crop)
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Huisache
Huisache Control 280 DAT (2 sites)
*Bellville plots mowed 74 DAT, Franklin plots mowed 63 DAT.
2017 Bayer Bare ground
6 months after treatment
Treatment Rate/Acre Bermuda %Control
Vetch%Control
indaziflamimazapyraminocyclopyrachlor
150 lb/a 83.8 95
indaziflamimazapyraminocyclopyrachlor
250 lb/a 93.5 97.5
imazapyrDiuron
200 lb/a 89 40
*Do not apply directly to water, presence of surface waters. Surface and ground water advisory
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New from Bayer Enviromental
Esplanade 200SC Esplanade 200SC --
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Esplanade 200SC --
• Excellent PRE control of a number of broadleaves and grasses, both summer and winter annual.
• 2017 –so far excellent control 98-100% of annual ryegrass @ 32 DAT with 3-7 oz/a.
Escort XP
Wick applicators What about IPT applications?
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Spray coverage is important.
But, once leaf is covered quit spraying.
Greenbriar Smilax spp. 1 Remedy Ultra 2% IPT
2 Remedy 2% IPTDiesel 5% Emulsifier 0.19%
3 Remedy 25% IPTDiesel 75%
4 Remedy 0.5% IPTGrazon P+D 2%
5 Pasturegard 2% IPT
6 Weedmaster 2.5% IPT
7 Milestone 2% IPT
8 Untreated
LSD = 7.7LSD = 16
Janak Thesis Research
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Fence Lines
• Mixed brush –– Method + triclopyr
– Grazon + triclopyr
• Herbaceous weeds– 2,4-D + glyphosate (no residual)
– Sahara (diuron + imazapyr) (good residual – be careful of trees)
Any Questions?Thank You
My email address: [email protected]
Extension Weed Specialist: [email protected]