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2008 North Dakota Weed Control Guide

W-253, January 2008
R. K. Zollinger, NDSU Extension Weed Specialist

RELATIVE HERBICIDE EFFECTIVENESS ON WEEDS -

POST-APPLIED HERBICIDES -
 ACCENT through METSULFURON
The following ratings give relative herbicide effectiveness. Under favorable conditions control may be better than indicated and under unfavorable conditions herbicides may give erratic results. Dry and cool weather increases herbicide persistence while wet and/or warm weather reduces herbicide persistence.

Weed control ratings in this section are based on the following scale:
E = Excellent = 90 to 99% control
G = Good = 80 to 90% control
F = Fair = 65 to 80% control
P = Poor = 40 to 65% control
N = None = No control

Herbicide persistence ratings are for residues present 12 months after application:
O = Often S = Seldom N = None

POST - APPLIED HERBICIDES Mode of
action		 Barnyard-
grass		 Field
sandbur		 Green
foxtail		 Yellow
foxtail		 Quack-
grass		 Vol.
cereals		 Wild
oat		 Proso
millet		 Wild
buckwheat		 Common
cocklebur
Kochia		 C. Lambs
quarters
                  
Accent 2 E G-E E F-G G-E G-E E G-E P P F2 P
Achieve 1 F G G-E G N N E2  E N N N N
Aim/generics 14 N N N N N N N N P P F-E F-E
Amber + 2,4-D 2,4 N N N N N N N N F-G F-G E2 F-G
Assert 2 P N P P N N F-G2 N F-G P N P
Assure II 1 E E E G-E G-E E G-E2 E N N N N
Atrazine (0.38 lb ai/A) 5 F P F F N F F P G-E F E E
Atrazine (0.5 - 0.75 lb ai/A) 5 F-G F F F-G P F-G F-G P-F E G E E
Axial XL 1 G-E - E G-E N N E2 E N N N N
Basagran/generics 6 N N N N N N N N P G-E P-F F-G
Betamix/generics 5 P N F F N N N P F P-F F-G G
Betanex/generics 5 P N P-F P-F N N N P P-F P F G
Beyond 2 E F-G E G-E F G-E E2 G-E P G-E E2 F
Bromoxynil 6 N N N N N N N N E E G-E G
Bromoxynil&MCPA 4,6 N N N N N N N N E E G-E E
Callisto 27 N N N F N N N N F E P-F E
Callisto + Atrazine(3/8 lb ai) 5,27 N N N F N N N N G-E E E E
Celebrity Plus 2,4,19 E G-E E G-E G-E G-E E G-E E E E2 G
Chlorsulfuron + 2,4-D 2,4 N N P-F N N N N N E G E2 E
ClearMax 2,4 E F-G E G-E F G-E E2 G-E P E E2 E
Clethodim 1 E E E E G E E E N N N N
Clopyralid 4 N N N N N N N N F-G E N P-F
Clopyralid & 2,4-D/MCPA 4 N N N N N N N N G E P G
Cobra 14 N P P-F P-F N N N P P G P-F F
Dicamba1 4 N N N N N N N N E E E G
Dicamba + MCPA 4 N N N N N N N N G-E E E E
Discover 1 E - E G-E P N E2 - N N N N
ET 14 N N N N N N N N P P P-G F-G
Everest 2 F-G N E P-G P N G-E - F N N N
Extreme 2,9 E E E E E E E E G-E E E G-E
FirstRate 2 N N N N N N N N F E P2 P
Flexstar 14 N N P-F P-F N N N N P G-E G-E P-F
Fusilade DX 1 E E G-E G-E G E E2 E N N N N
Fusion 1 E E E E G E E2 E N N N N
Glyphosate3 9 E E E E E E G-E E P-G E F-E P-E
Goal 14 P N P P P P F-G N G-E E G-E G
Halex GT 27 E E E E E E E E P-G E E E
Hornet 2,4 N N N N N N N N F-G E F-G2 P-F
Huskie 6,27 F-G N N N N N N N E E G-E E
Impact 27 E - G-E G-E - - - G-E P E E E
Impact + Atrazine (3/8 lb ai) 5,27 E - G-E G-E - - - E E E E E
Laudis 27 G-E P-F P-F G - - P G-E P-F E G-E E
Laudis + Atrazine (3/8 lb ai) 5,27 E F F G-E - - P-F E E E E E
Liberty/Finale 10 E G E G P F-G G-E E E E E F-G
Lightning 2 E E E E F G-E G-E G-E E G E2 E
Lumax (3 pt) 5,15,27 N N N F N N N N E G E E
Maverick 2 - N P-F P-F G N E - N - P2 P
MCPA 4 N N N N N N N N N G P E
Metribuzin 5 F - F F P P - - G P F-G E
Metsulfuron + 2,4-D 2,4 N N P P N N N N F-G F E2 E
Met & Chlorsulfuron + 2,4-D 2,4 N N F-G F N N N N E G-E E2 E
Met&Thifen&Tribnrn&2,4-D 2,4 N N N N N N N N G F-G E2 E


SOIL- APPLIED
HERBICIDES		 Lanceleaf
sage		 Common
mallow		 Venice
mallow		 Marsh
elder		 Mustard,
Wild		 Mustards
Wnt. Ann.		 E black
nightshade		 Hairy
nightshade		 Redroot
pigweed		 Prickly
lettuce		 C. rag-
weed		 Smart-
weed		 Sun-
flower		 Russian
thistle		 Biennial
wormwood		 Canada
thistle		 Herbicide
persistence
                        
Accent P - P P E E N N E - P G-E P P P N O
Achieve N - N N N N N N N N N N N N N N N
Aim/generics - - N P P P G G G-E P-F N N P F - N N
Amber + 2,4-D1 F-G F - E E E F F E E E F E E2 F-G F-G O
Assert N N N N E G-E N N P N N P N P-F N N S
Assure II N N N N N N N N N N N N N N N N N
Atrazine (0.38 lb ai) E - - G-E E E G-E G-E E E F-E G-E F-E E - N S
Atrazine (0.5 - 0.75 lb ai) E - - E E E E E E E E E G E - P S
Axial XL N N N N N N N N N N N N N N N N N
Basagran/generics P P E G-E E E N F-G F G P-F E E G G-E F-G N
Betamix/generics P P F G G-E - F-G F-G G - F F P P P N N
Betanex/generics P P F G G-E - F-G F-G G-E - F F P P P N N
Beyond E P P G-E E E E E E E2 P G-E E G-E P N-P S
Bromoxynil E P G-E E F-G F-G E E F F-G E G-E G-E E P-F P N
Bromoxynil + MCPA E P G-E E E G-E E E G F-G E G E E F P-F N
Callisto - - N E E E E E E - P-F E E - - N S
Callisto + Atrazine E G-E G-E E E E E E E E E E E E E P S
Celebrity Plus F G F E E E G-E G-E E E E E E G E F-G O
Chlorsulfuron + 2,4-D1 F-G F - E E E F F E E E E E E2 F-G G O
ClearMax E P F E E E E E E E2 G G-E E G-E F-G P-F S
Clethodim N N N N N N N N N N N N N N N N N
Clopyralid F F-G P E N N E E P E G-E G-E G-E P-F E E S
Clopyralid&2,4-D/MCPA F-G G-E G E E E E E P E E E E G E G-E S
Cobra E G-E F-G G E - G G E - G-E G P-F P P N N
Dicamba1 P-F P F-G E P P E E G G-E E E G-E G G-E F-G S
Dicamba + MCPA1 G-E P G G-E E F-G E E G E E E E G G-E F S
Discover N N N N N N N N N N N N N N N N N
ET - - N P P - P P G P N N P P - N N
Everest N N N N E E E - G-E P N E P-F N - N S
Extreme E G-E E E E E E E E E E E E E G-E G O
FirstRate P - G-E E G-E P N N P - E E E - P N O
Flexstar E G-E G-E G-E E E G-E F-G E - E G-E F - P N O
Fusilade DX N N N N N N N N