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  4. Susceptibility of Weeds to Herbicide Control

Agriculture: Corn Pest Management Guidelines

Susceptibility of Weeds to Herbicide Control

Weeds Pages

PREEMERGENCE POSTEMERGENCE
ALA ATR* CAR EPT MET PEN YUK BRO DIC* DIF FOR GLY HAL NIC MTZ PAR* 24D*
ANNUAL WEEDS
barley, hare C C N C C C N N N N — C N — C C N
barnyardgrass C C N C C C N N N N C C P C P N N
cocklebur, common N C P N N N C C C C C C C N C C C
goosefoot N C — C N C C C C C — C — — C C C
groundcherries N C C C N N C C C C — C — — P C C
junglerice N — N — N C N N N N — — N — — — N
knotweed, common N C — N N C C C C C — C — — C P P
lambsquarters, common P C C C P C C C C C C C P N C P C
lettuce, prickly N — — — N N C P C C — C N — C C C
morningglories P C C C P N C C C C P C P C N — C
nightshade, black C C C C C N C C C C C C N N P C C
nightshade, hairy C C C C P N C C C C C C N N N C C
oat, wild — C N C — P N N N N C C N P N C N
pigweed, redroot P C C C P C C P C C C C P C C C C
puncturevine N P — C N P C C C C — C — C — C C
purslane, common C C N C P C C N C C — C P P P C C
purslane, horse C C N — C C C N C C — P — — — — P
shattercane P — N — P — N N N N C C N C — — N
sprangletops C C N — C C N N N N — C N — N — N
spurge, spotted N P P N N C P C P P — C N — C C C
sunflower, common N N P N N N C C C C C C C P P — C
thistle, Russian N C — N N P C C C C — C — — C P C
velvetleaf N P C N N N C C C C C P C N C — C
wheat (volunteer) N C N C N P N N N N — C N N C C N
PERENNIAL WEEDS
bermudagrass (plant) N N N N N N N N N N N C N N N N N
bermudagrass (seed) N C N P N N N N N N N C N — N P N
bindweed, field (plant) N N N N N N P N P P N C — — P N P
bindweed, field (seed) P C P N P P C P C C N C — — P P C
datura, sacred N — N N N N — N — — C C N C — N —
johnsongrass (plant) N N N P N N N N N N C C N C N N N
johnsongrass (seed) P C N P P P N N N N C C N C N P N
knapweed, Russian N — N N N N — N — — — C — — — N —
nightshade, silverleaf N — N N N N C N C C — C N — — N C
nutsedge, purple N N N C N N C N N N N P C N N N N
nutsedge, yellow C N N C C N C N N N N P C N P N N
C= control P= partial control N= no control —= no information
ALA = alachlor* (Micro-Tech) HAL = halosulfuron (Sandea)
ATR = atrazine* (AAtrex, etc.) MET = s-metolachlor (Dual Magnum)
BRO = bromoxynil (Buctril) MTZ = metribuzin (Sencor)
CAR = carfentrazone (Shark) NIC = nicosulfuron (Accent)
DIC = dicamba* (Banvel, Clarity) PAR = paraquat* (Gramoxone Inteon)
DIF = diflufenzopyr (Distinct) PEN = pendimethalin (Prowl, Prowl H2O)
EPT = EPTC (Eradicane) 24D = 2,4-D*
FOR = foramsulfuron (Option) YUK = halsulfuron/dicamba (Yukon)
GLY glyphosate** (Roundup)
*Permit required from county agricultural commissioner for purchase or use.
**Only for transgenic varieties of corn that contain specific herbicide-resistant genes.

Text Updated: 07/09

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