
Tomato
Agricultural pest management
Susceptibility of Weeds to Herbicide Control
(Reviewed 11/11, updated 11/11, corrected
9/16)
In this Guideline:

More about weeds in tomato:


Susceptibility of Weeds to Herbicide Control

FALL BED 
PREPLANT 
POSTPLANT 
LAYBY 
Pre 
Post 
Preemergence 
Pre 
Postemergence 
Preemergence 
MTR 
CAR 
GLY 
PAR* 
13D/ 
MEO 
MEP* 
MET* 
NAP 
PEN 
TRI 
MEO 
RIM 
CAR 
CLE 
HAL 
MTR 
RIM 
SET 
DCP 
EPT 
MEO 
PEN 
TRI 
CHL* 
Mode of Action^{1} 
5 
14 
9 
22 
– 
15 
– 
– 
15 
3 
3 
15 
2 
14 
1 
2 
5 
2 
1 
3 
8 
15 
3 
3 
ANNUAL WEEDS: Broadleaves 
Broomrape 
N 
— 
C 
N 
— 
— 
— 
C 
N 
— 
P 
— 
— 
— 
N 
N 
N 
— 
N 
— 
N 
— 
— 
P 
Chickweed, Common 
C 
P 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
P 
N 
C 
C 
C 
N 
C 
C 
C 
C 
C 
Dodders 
N 
P 
C 
C 
— 
N 
— 
C 
N 
P 
N 
N 
N 
P 
N 
P 
N 
P 
N 
P 
P 
N 
P 
N 
Fleabane, Hairy 
N 
N 
C 
C 
— 
N 
— 
C 
N 
N 
N 
N 
— 
N 
N 
— 
P 
— 
N 
— 
P 
N 
N 
N 
Goosefoot, Nettleleaf 
C 
— 
C 
C 
C 
P 
C 
C 
C 
C 
C 
P 
P 
— 
N 
C 
C 
P 
N 
C 
C 
P 
C 
C 
Groundcherries 
P 
C 
C 
C 
— 
C 
C 
C 
N 
N 
N 
C 
C 
C 
N 
— 
P 
P 
N 
C 
C 
C 
N 
N 
Groundsel, Common 
P 
— 
C 
C 
C 
N 
C 
C 
C 
N 
N 
N 
C 
— 
N 
C 
C 
P 
N 
N 
C 
N 
N 
N 
Horseweed 
— 
N 
C 
C 
— 
N 
— 
C 
N 
N 
N 
N 
— 
N 
N 
— 
C 
— 
N 
— 
P 
N 
N 
N 
Jimsonweed 
N 
— 
C 
C 
— 
— 
— 
C 
N 
N 
N 
— 
— 
— 
N 
— 
N 
— 
N 
— 
C 
— 
N 
N 
Knotweed, Prostrate 
N 
— 
C 
P 
— 
N 
— 
C 
C 
C 
C 
N 
C 
— 
N 
— 
P 
P 
N 
P 
P 
N 
C 
C 
Lambsquarters, Common 
C 
— 
C 
P 
C 
P 
C 
C 
C 
C 
C 
P 
C 
— 
N 
P 
C 
P 
N 
C 
C 
P 
C 
C 
Lettuce, Prickly 
C 
— 
C 
C 
— 
N 
C 
C 
C 
N 
N 
N 
P 
— 
N 
N 
P 
P 
N 
— 
C 
N 
N 
N 
Mallow, Little (Cheeseweed) 
P 
C 
P 
P 
P 
P 
P 
N 
C 
P 
N 
P 
C 
C 
N 
— 
P 
P 
N 
P 
P 
P 
P 
N 
Mustards 
C 
P 
C 
C 
— 
N 
C 
C 
P 
P 
N 
N 
C 
P 
N 
C 
C 
C 
N 
P 
N 
N 
P 
N 
Nettle, Burning 
C 
C 
N 
C 
C 
C 
C 
C 
P 
N 
P 
— 
C 
C 
N 
C 
C 
C 
N 
P 
P 
— 
N 
P 
Nightshade, Hairy 
P 
C 
C 
C 
— 
C 
C 
C 
N 
P 
N 
C 
C 
C 
N 
N 
P 
P 
N 
P 
C 
C 
P 
N 
Nightshade, Black 
N 
C 
C 
C 
— 
C 
C 
P 
N 
P 
N 
C 
C 
C 
N 
N 
P 
P 
N 
P 
P 
C 
P 
N 
Pigweeds 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
N 
C 
C 
P 
N 
C 
C 
C 
C 
C 
Purslane, Common 
P 
N 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
N 
N 
P 
P 
C 
N 
C 
C 
C 
C 
C 
Rocket, London 
C 
C 
C 
C 
— 
N 
C 
C 
P 
P 
N 
N 
C 
C 
N 
C 
C 
C 
N 
P 
P 
N 
P 
N 
Shepherd'sPurse 
C 
P 
C 
C 
— 
P 
C 
C 
P 
P 
N 
P 
C 
P 
N 
P 
C 
C 
N 
P 
P 
P 
P 
N 
Sowthistles 
C 
N 
C 
C 
C 
P 
C 
C 
C 
N 
N 
P 
P 
N 
N 
C 
C 
P 
N 
P 
C 
P 
N 
N 
Sweetclovers 
C 
— 
C 
P 
N 
N 
P 
N 
P 
N 
P 
— 
— 
— 
N 
— 
P 
N 
N 
N 
N 
— 
N 
N 
Thistle, Russian 
C 
— 
C 
P 
— 
P 
P 
C 
P 
P 
C 
P 
P 
— 
N 
— 
P 
P 
N 
C 
N 
P 
P 
C 
Tobacco, Indian 
— 
— 
C 
C 
— 
— 
— 
C 
N 
N 
N 
— 
— 
— 
N 
— 
N 
— 
N 
— 
C 
— 
N 
N 
Velvetleaf 
P 
C 
C 
C 
— 
P 
P 
C 
N 
N 
N 
P 
P 
C 
N 
C 
C 
P 
N 
N 
P 
P 
N 
N 
ANNUAL WEEDS: Grasses 
Barnyardgrass 
P 
N 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
C 
N 
C 
N 
P 
C 
C 
C 
C 
C 
C 
C 
Canarygrasses 
— 
N 
C 
C 
— 
C 
C 
C 
C 
C 
C 
C 
— 
N 
C 
N 
N 
— 
C 
C 
C 
C 
C 
C 
Cereals, Volunteer 
P 
N 
C 
C 
C 
N 
C 
C 
C 
C 
N 
N 
C 
N 
C 
N 
N 
C 
C 
P 
C 
N 
P 
N 
Crabgrass, Large 
C 
N 
C 
C 
— 
C 
C 
C 
C 
C 
C 
C 
P 
N 
C 
N 
N 
C 
C 
C 
C 
C 
C 
C 
Lovegrasses 
P 
N 
C 
C 
— 
C 
C 
C 
C 
C 
C 
C 
P 
N 
C 
N 
N 
P 
C 
C 
C 
C 
C 
C 
Oat, Wild 
P 
N 
C 
P 
— 
N 
C 
C 
C 
P 
N 
N 
P 
N 
C 
N 
N 
P 
C 
P 
C 
N 
P 
C 
PERENNIAL WEEDS:
Seedlings 
Bermudagrass 
N 
N 
C 
C 
C 
N 
C 
C 
C 
C 
N 
N 
N 
N 
C 
N 
N 
— 
C 
C 
C 
N 
C 
C 
Bindweed, Field 
N 
C 
C 
C 
N 
N 
N 
C 
N 
N 
N 
P 
N 
C 
N 
N 
N 
P 
N 
N 
— 
P 
N 
C 
Johnsongrass 
N 
N 
C 
C 
— 
C 
— 
C 
P 
C 
C 
C 
P 
N 
C 
N 
N 
P 
C 
C 
C 
C 
C 
C 
PERENNIAL WEEDS: Established 
Bermudagrass 
N 
N 
C 
N 
T 
N 
T 
P 
N 
N 
N 
N 
N 
N 
P 
N 
N 
N 
P 
N 
N 
N 
N 
N 
Bindweed, Field 
N 
P 
C 
N 
N 
N 
T 
P 
N 
N 
N 
— 
P 
P 
N 
— 
N 
P 
N 
N 
N 
— 
N 
N 
Datura, Sacred 
N 
— 
C 
P 
— 
— 
— 
N 
N 
N 
N 
— 
— 
— 
— 
N 
P 
— 
N 
— 
P 
— 
N 
N 
Johnsongrass 
N 
N 
P 
N 
— 
N 
N 
P 
N 
N 
N 
N 
N 
N 
P 
N 
N 
N 
C 
N 
C 
N 
N 
N 
Nutsedge, Purple 
N 
N 
P 
N 
— 
N 
P 
N 
N 
N 
N 
N 
P 
N 
N 
C 
N 
N 
N 
N 
C 
N 
N 
N 
Nutsedge, Yellow 
P 
N 
P 
N 
P 
P 
P 
P 
P 
N 
N 
P 
P 
N 
N 
P 
N 
N 
N 
N 
C 
P 
N 
N 
Ratings Legend
C  = control 

P  = partial control 

N  = no control 

—  = no information 
Chemical Legends

Mode of Action 

Mode of Action 
13D/CHL = 1,3dichloropropene/chloropicrin* (Telone) 
— 
MET = metam sodium* (Vapam, etc.) 
— 
CAR = carfentrazone (Shark) 
14 
MTR = metribuzin (Metribuzin 75, etc.) 
5 
CLE = clethodim (Select Max) 
1 
NAP = napropamide (Devrinol) 
15 
DCP = DCPA (Dacthal) 
3 
PAR = paraquat* (Gramoxone) 
22 
EPT = EPTC (Eptam) 
8 
PEN = pendimethalin (Prowl H20) 
3 
GLY = glyphosate (Roundup, Touchdown) 
9 
RIM = rimsulfuron (Matrix) 
2 
HAL = halosulfuron (Sandea) 
2 
SET = sethoxydim (Poast) 
1 
MEO = smetolachlor (Dual Magnum) 
15 
TRI = trifluralin (Treflan, etc.) 
3 
MEP = metam potassium* (KPam HL) 
— 


UC IPM Pest Management Guidelines: Tomato
UC ANR Publication 3470
Weeds
 W. T. Lanini, Weed Science/Plant Sciences, UC Davis
 K. J. Hembree, UC Cooperative Extension, Fresno County
 G. Miyao, UC Cooperative Extension, Solano/Yolo counties
 C. S. Stoddard, UC Cooperative Extension, Merced/Madera counties
Acknowledgments for contributions to the weed section:
 B. J. Mullen,UC Cooperative Extension, San Joaquin County
 J. P. Orr, UC Cooperative Extension, Sacramento County
 W. E. Bendixen, UC Cooperative Extension, Santa Barbara County
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