Tomato

Agricultural pest management


Susceptibility of Weeds to Herbicide Control

(Reviewed 11/11 , updated 11/11 , corrected 12/13 )

In this Guideline: More about weeds in tomato:

Susceptibility of Weeds to Herbicide Control
Customize LIST OF WEEDS FALL BED PREPLANT POSTPLANT LAYBY
Pre Post Preemergence Pre Postemergence Preemergence
MTR OXY 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 Action1 5 14 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 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 C P C C N C N P N N N P N P N P N P P N P N
Fleabane, Hairy N P N C C N C N N N N N N P N P N N N
Goosefoot, Nettleleaf C 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 C N N N C C C N P P N C C C N N
Groundsel, Common P C C C C N C C C N N N C N C C P N N C N N N
Horseweed P N C C N C N N N N N N C N P N N N
Jimsonweed N C C C C N N N N N N C N N
Knotweed, Prostrate N C C P N C C C C N C N P P N P P N C C
Lambsquarters, Common C 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 C N C C C N N N P N N P P N C N N N
Mallow, Little (Cheeseweed) P C C P P P P P N C P N P C C N P P N P P P P N
Mustards C 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 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 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 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 C N C C P N C C C C C
Purslane, Common P C 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 C N C C P P N N C C N C C C N P P N P N
Shepherd's-Purse C 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 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 C P N N P N P N P N P N N N N N N
Thistle, Russian C P C P P P C P P C P P N P P N C N P P C
Tobacco, Indian C C C C N N N N N N C N N
Velvetleaf P C 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 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 P N C C C C C C C C C N C N N C C C C C C
Cereals, Volunteer P N 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 P N C C C C C C C C C P N C N N C C C C C C C
Lovegrasses P 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 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 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 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 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 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 N P C N N N T P N N N P P N N P N N N N N
Datura, Sacred N N C P N N N N N P N P N N
Johnsongrass N 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 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 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 = 1,3-dichloropropene/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 OXY = oxyfluorfen (Goal) 14
EPT = EPTC (Eptam) 8 PAR = paraquat* (Gramoxone Inteon) 22
GLY = glyphosate (Roundup, Touchdown) 9 PEN = pendimethalin (Prowl H20) 3
HAL = halosulfuron (Sandea) 2 RIM = rimsulfuron (Matrix) 2
MEO = metolachlor (Dual Magnum) 15 SET = sethoxydim (Poast) 1
MEP = metam potassium* (K-Pam HL) TRI = trifluralin (Treflan, etc.) 3
Comments
* 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, mode-of-action numbers are useful in planning mixtures or rotations of herbicides with different modes of action. For more information, see http://www.hracglobal.com.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

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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