Weeds Pages
| BEN | BRO | CLE | DIM | ETH | FLM | FLU | GLY | MET* | OXY | PAR* | PEN | SET | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mode of Action1 | 8 | 6 | 1 | 15 | 8 | 14 | 1 | 9 | 27 | 14 | 22 | 3 | 3 |
| ANNUAL WEEDS | |||||||||||||
| barley, hare | P | N | — | C | C | P | C | C | C | P | P | P | C |
| barnyardgrass | C | N | C | C | P | C | C | C | C | P | P | C | C |
| bluegrass, annual | C | N | C | C | C | C | N | C | C | P | P | C | N |
| burclover, California | N | N | N | — | — | P | N | P | N | P | P | N | N |
| canarygrass | C | N | C | — | C | — | C | C | C | P | P | C | C |
| cereals | N | N | — | — | C | — | C | C | C | P | P | P | C |
| chickweed, common | P | N | N | C | C | C | N | C | C | N | C | C | N |
| crabgrasses | C | N | — | C | P | C | C | C | C | N | C | C | C |
| cudweeds | N | C | N | — | C | C | N | C | C | N | N | N | N |
| dodders | N | N | N | — | N | — | N | C | C | N | C | N | N |
| fiddlenecks | N | C | N | — | C | C | N | C | C | C | P | C | N |
| filarees | N | P | N | — | P | C | N | P | C | C | P | N | N |
| fleabane, hairy | N | C | N | — | P | P | N | C | C | P | C | N | N |
| foxtails | C | N | C | C | C | C | C | C | C | N | C | C | C |
| goosefoot | P | C | N | — | C | C | N | C | C | C | C | C | N |
| groundcherries | N | C | N | C | C | C | N | C | C | C | C | P | N |
| groundsel | N | C | N | — | P | C | N | C | C | C | C | N | N |
| henbit | N | C | N | — | P | C | N | C | C | C | C | C | N |
| horseweed | N | C | N | — | P | C | N | C | C | P | P | N | N |
| knotweed, common | C | P | N | — | C | C | N | C | C | P | P | C | N |
| kochia | — | C | N | N | C | — | N | C | C | P | P | C | N |
| lambsquarters, common | P | C | N | C | C | — | N | C | C | C | P | C | N |
| lettuce, prickly | N | C | N | — | C | P | N | C | C | C | P | N | N |
| lovegrasses | C | N | — | — | — | C | C | C | C | C | P | C | C |
| mallow, little (cheeseweed) | N | P | N | — | P | C | N | P | N | C | N | P | N |
| morningglories | N | C | N | — | C | C | N | C | P | C | P | N | N |
| mustards | N | C | N | — | N | C | N | C | C | C | C | N | N |
| nettles | N | C | N | C | P | C | N | N | C | C | P | N | N |
| nightshade, black | N | C | N | P | P | — | N | C | P | C | C | N | N |
| nightshade, hairy | N | C | N | P | C | — | N | C | C | C | C | N | N |
| oat, wild | N | N | C | — | C | C | C | C | C | P | P | P | C |
| panicum, fall | C | N | — | — | — | — | C | C | C | N | P | C | C |
| pigweeds | C | C | N | C | P | C | N | C | C | C | C | C | N |
| puncturevine | N | C | N | — | C | C | N | C | C | C | C | P | N |
| purslane, common | C | N | N | C | C | C | N | C | C | C | C | C | N |
| radish, wild | N | C | N | — | N | C | N | C | C | P | C | N | N |
| rocket, London | N | C | N | — | N | C | N | C | C | C | C | C | N |
| ryegrasses | P | N | — | C | N | P | C | C | C | N | P | C | C |
| shepherd's-purse | N | C | N | — | N | C | N | C | C | C | P | N | N |
| sowthistles | N | C | N | — | C | P | N | C | C | C | P | N | N |
| sunflowers | N | C | N | — | N | — | N | C | C | C | P | N | N |
| sweetclovers | N | N | N | — | — | C | N | P | N | P | P | N | N |
| swinecress, greater | N | N/P | N | — | — | — | C | C | C | C | N/P | — | N |
| thistle, Russian | N | C | N | — | P | C | N | C | C | P | C | P | N |
| PERENNIAL WEEDS | |||||||||||||
| bermudagrass (established) | N | N | P | — | N | N | P | C | P | N | N | N | P |
| bermudagrass (seedling) | N | N | C | — | — | N | C | C | C | N | P | C | C |
| bindweed, field (established) | N | N | N | N | N | N | N | P | P | N | N | N | N |
| bindweed, field (seedling) | N | P | N | — | N | N | N | C | P | N | P | P | N |
| dock, curly (established) | N | N | N | — | N | N | N | — | C | N | N | N | N |
| dock, curly (seedling) | P | C | N | — | — | — | N | C | C | C | C | C | N |
| johnsongrass (established) | N | N | C | — | N | N | C | C | C | N | N | N | C |
| johnsongrass (seedling) | C | N | C | C | C | C | C | C | C | N | C | C | C |
| nutsedge, purple | N | N | N | — | P | N | N | P | N | N | N | N | N |
| nutsedge, yellow | N | N | N | P | P | P | N | P | P | N | N | N | N |
| thistle, Canada | — | — | N | N | — | — | N | P | N | — | N | N | N |
| C | = control | P | = partial control | N | = no control | — | = no information |
| BEN | = bensulide (Prefar) | FLU | = fluazifop-P-butyl (Fusilade) |
| BRO | = bromoxynil (Brox) | GLY | = glyphosate (Roundup) |
| CLE | = clethodim (Select Max) | MET | = metam sodium or potassium* (Vapam, etc.) |
| DIM | = dimethenamid (Outlook) | OXY | = oxyfluorfen (Goal, GoalTender) |
| ETH | = ethofumesate (Ethofumesate) | PAR | = paraquat* (Gramoxone) |
| FLM | = flumioxazin (Chateau) | PEN | = pendimethalin (Prowl) |
| SET | = sethoxydim (Poast) |
| * 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. |