Agriculture: Cole Crops Pest Management Guidelines

Susceptibility of Weeds to Herbicide Control

BEN CAP CAR CLE DCP GLY MET* NAP OXY PAR* PEL SET TRI
Mode of Action1 8 un 14 1 3 9 17 15 14 22 27 1 3
ANNUAL WEEDS  
barley, foxtail C N C C C C C N C C C
barnyardgrass C N C C C C C P P C C C
bluegrass, annual C N C C C C C P P C N C
canarygrass, littleseed C N C C C C C P P C C
chickweed, common P C P N C C C C N C C N C
goosefoot, nettleleaf P N C C C C C C N C
groundcherries N C N C C C N C C N N
groundsel, common N N N C C P C C C N N
knotweed, common C N P P C C P P C N C
lambsquarters, common P C N C C P C C P P N C
lettuce, prickly N N N C C C C P N N
little mallow (cheeseweed) N P C N P P P P C P C N N
mustards N C P N P C C P C C C N N
nettle, burning N P C N P N C P C P N P
nightshade, black N P N N P C C N C C N N
nightshade, hairy N P N N P C C N C C N N
oat, wild N N C P C C C P P C P
pigweeds C C N C C C C C C P N C
pineapple-weed N N N N C P P P N N
polypogon, rabbitfoot C N C C C N C C C
purslane, common C P N N C C C C C P C N C
radish, wild N P N N C C P C C N N
rocket, London N C N P C C C C P C N N
shepherd's-purse N C P N N C C P P P C N N
sowthistles N C N N P C C C C P N N
volunteer grains N N C P C C C N P C C
PERENNIAL WEEDS  
bindweed, field (seedling) N P C N N C P N N P N P
bindweed, field (established) N N N N N P P P N N N N C
nutsedge, purple N N N N P P N N N N N N
nutsedge, yellow N N N N P C N N N N N N
Ratings Legend
C= control P= partial control N= no control = no information
Herbicide Legend
Herbicide Mode of action1 Herbicide Mode of action1
BEN = bensulide (Prefar) 8 NAP = napropamide (Devrinol) 15
CAP = caprylic and capric acids (Suppress) un OXY = oxyfluorfen (Goal, GoalTender) 14
CAR = carfentrazone (Shark) 14 PAR = paraquat* (Gramoxone) 22
CLE = clethodim (Select Max) 1 PEL = pelargonic acid (Scythe) 17
DCP = DCPA (Dacthal) 3 SET = sethoxydim (Poast) 1
GLY = glyphosate (Roundup PowerMAX) 9 TRI = trifluralin (Treflan) 3
MET = metam sodium* (Vapam) 17
* Permit required from county agricultural commissioner for purchase or use.
1 Group numbers are assigned by the Weed Science Society of America (WSSA) according to different modes of action. Although weeds may exhibit multiple resistance across many groups, use mode-of-action group numbers to plan mixtures or rotations of herbicides with different modes of action.
Text Updated: 10/19