Agriculture: Alfalfa Pest Management Guidelines

Susceptibility of Weeds to Herbicide Control in Seedling Alfalfa

POSTEMERGENCE
  24DB*1 24DB*2 24DB*3 24DB*4 BRO1 BRO2 CLE1 CLE2 GLY+ HEX IMA1 IMA2 IMZ1 IMZ2 PAR*1 PAR*2 SET1 SET2
Mode of Action 4 4 4 4 6 6 1 1 9 5 2 2 2 2 22 22 1 1
BROADLEAF WEEDS
Burclover N N N N N N N P P N N N N N N N N
Buttercup N N N N N N N C C P C P C N N
Celery, Wild N N N N N N N C P N N N N N P N N
Chickweed N N N N N N N C P C C C C P C N N
Cocklebur C C C C C N N C C C C C C N P N N
Dock, Curly (seedling) P C C N N N N C N N P N N N N N N
Dovefoot N N P N N N N C C C C C P C N N
Fiddleneck N N N C C N N P P N P N P N P N N
Filarees N N N N N N N P P P C P C N P N N
Fleabane P N C
Groundsel, Common N P C P C N N C C N N N N N P N N
Henbit N N N N N N N C N N P P C N N N N
Jimsonweed P C C C C N N C C C C C C C N N
Knotweed (seedling) N P C P P N N C C P C P C N N N N
Lambsquarters C C C C C N N C C N N P C P C N N
Lettuce, Miners N N N N N N N C P C C P C P C N N
Lettuce, Prickly P C C P C N N C N N N N N P C N N
Mallow, Little (cheeseweed) N N N N N N N P N P C P C N N N N
Milkthistle N N P N P N N C N N N N P P N N
Mustard, Black N P C C C N N C P C C C C N P N N
Nettle, Burning N N P N N N N P N P C P C N N N N
Nightshade, Hairy P C C C C N N C C C C C C C N N
Oxtongue, Bristly P P P C N N N P N N
Pineappleweed N N N N P N N C P N N N N P C N N
Pigweed, Redroot C C C N P N N C C C C C C N N N N
Radish, Wild N P C N P N N C P P C P C N P N N
Rockpurslane, Desert N N N N N N N C N C C N N P C N N
Rocket, London P C C P C N N C P C C C C C C N N
Rush, Toad N N N N N C C C C N N N N
Shepherd's-Purse N P P C C N N C P P C C C N P N N
Smartweed, Swamp P C C P C N N C C C C C N P N N
Sowthistle P C C C C N N C N N N N C N N
Speedwell, Thymeleaf N N N N N N N C N N N N N N N N N
Spurge, Petty N N N N N N C C C C N N
Spurry, Corn N N N N N N N C C N N C N N
Starthistle, Yellow N N N P C N N C N N C N N
Sunflower, Wild C C C C C N N C C C C C C N P N N
Swinecress N N P N P N N C C C C N P N N
Willowherb, Panicle P C C N N N C C N N N N
GRASS WEEDS
Barley, Hare N N N N N N C C C N N N C C P P C P
Barnyardgrass N N N N N N C C C N C C C C P P C C
Bluegrass, Annual N N N N N N P C C P N P N P P C N N
Brome, Ripgut N N N N N N C C C N N N C C P P P
Canarygrass, Hood N N N N N N C C C N N P C C N P C C
Fescue, Rattail N N N N N N C C N N N P P P P N P
Foxtail, Yellow N N N N N N P C C N N P C C P P C C
Goosegrass N N N N N N P P C N N N N N N N P P
Oat, Wild N N N N N N C C C N P P C C P P C C
Punagrass N N N N N N P C P N N N N N N N P C
Ryegrass, Italian N N N N N N C C C/P^ N N N C C P C C C
Wheat, Volunteer N N N N N N C C C N N P C C P C C C
C= control    P= partial control    N= no control    = no information
Chemical Legend
24DB*1 = 2,4-DB* (Butyrac 0.5)    MOA: 4    IMA1 = imazethapyr (Pursuit 0.063)
24DB*2 = 2,4-DB* (Butyrac 0.75) MOA: 4 IMA2 = imazethapyr (Pursuit 0.094)
24DB*3 = 2,4-DB* (Butyrac 1.0) MOA: 4 IMZ1 = imazamox (Raptor 0.032)
24DB*4 = 2,4-DB* (Butyrac 1.5) MOA: 4 IMZ2 = imazamox (Raptor 0.047)
BRO1 = bromoxynil (Buctril 0.25) MOA: 6 PAR*1 = paraquat* (Gramoxone 0.125)
BRO2 = bromoxynil (Buctril 0.375) MOA: 6 PAR*2 = paraquat* (Gramoxone 0.25)
CLE1 = clethodim (Select Max 0.1) MOA: 1 SET1 = sethoxydim (Poast 0.375)
CLE2 = clethodim (Select Max 0.25) MOA: 1 SET2 = sethoxydim (Poast 0.5)
GLY+ = glyphosate (Roundup WeatherMax) MOA: 9    
HEX = hexazinone (Velpar 0.25) MOA: 5    
Text Updated: 03/17