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How to Manage Pests
UC Pest Management Guidelines
Small Grains
Susceptibility of Weeds to Herbicide
Control
(Reviewed 2/07,
updated 2/07)
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In this Guideline:
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More about weeds in small grains:
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Susceptibility of Winter Weeds to Herbicide Control
| Customize list of weeds |
| ANNUAL WEEDS |
| barley, hare |
| bluegrass, annual |
| brome, ripgut |
| burclover, California |
| canarygrass, hood |
| canarygrass, littleseed |
| chamomile, mayweed |
| chickweed, common |
| fiddleneck, coast |
| filarees |
| groundsel, common |
| henbit |
| knotweed, prostrate |
| ladysthumb |
| lettuce, prickly |
| mallow, little (cheeseweed) |
| milkthistles |
| miner's lettuce |
| mustards |
| nettle, burning |
| oat, wild |
| oxtongue, bristly |
| pimpernel, scarlet |
| pineapple-weed |
| radish, wild |
| redmaids (desert rockpurslane) |
| rocket, London |
| ryegrass, Italian |
| shepherd's-purse |
| smartweed, pale |
| sowthistle, annual |
| sowthistle, spiny |
| spurry, corn |
| stickleafs |
| tarweeds |
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| BRO |
CAR |
CHS |
CLO |
DIA* |
FEN |
GLY |
MCA* |
MES |
PAR* |
24D* |
TRA |
| N | N | C | N | N | N | N | N | C | P/C+ | N | N |
| N | N | C | N | N | N | N | N | C | P/C+ | N | — |
| N | N | C | N | N | N | N | N | P | N | N | — |
| N | P | C | C | C | N | C | P | N | P | C | — |
| N | N | C | N | N | C | N | N | C | N | N | C |
| N | N | C | N | N | C | N | N | C | N | N | C |
| C | — | C | — | C | N | C | N | P | C | N | — |
| N | P | C | — | P | N | C | N | C | C | N | — |
| C | C | C | — | P | N | C | P | P | P | P | — |
| N | P | — | P | C | N | P | P | — | C | C | — |
| P/C+ | — | C | — | P | N | C | C | P | C | C | — |
| N/P+ | — | C | — | C | N | C | C | P | C | C | — |
| N | — | C | N | C | N | P | C | N | N | C | — |
| P/C | — | — | C | C | N | — | C | P | P | C | — |
| C | — | C | — | P | N | P | C | P | C | C | — |
| N | P | C | N | C | N | P | P | P | N | P | — |
| N | — | — | — | C | N | C | P | P | P | C | — |
| N | — | C | — | P | N | C | N | C | C | N | — |
| C | P | C | N | C | N | C | C | C | C | C | — |
| N | C | — | — | N | N | C | N | — | N | N | — |
| N | N | C | N | N | C | C | N | C | P/C+ | N | C |
| C | — | C | — | P | N | — | P | — | — | C | — |
| — | — | C | — | — | N | C | — | — | — | — | — |
| C | — | C | — | P | N | — | C | P | C | C | — |
| P | P | C | — | P | N | C | P/C+ | C | P/C+ | C | — |
| N | — | C | — | C | N | C | C | N | C | C | — |
| C | C | C | P | C | N | C | C | — | C | C | — |
| N | N | C | N | N | N | C | N | C | P/C+ | N | C |
| C | P | C | P | C | N | C | C | — | C | C | — |
| P/C | — | — | C | C | N | — | C | — | P | C | — |
| C | P | C | P | C | N | C | P | — | C | C | — |
| N | — | — | P | C | N | C | — | — | N | — | — |
| N | — | C | — | N | N | C | N | — | C | N | — |
| N | — | C | — | — | N | C | N | — | — | N | — |
| C | — | C | — | C | N | C | P | — | C | P | — |
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| ANNUAL WEEDS |
| barley, hare |
| bluegrass, annual |
| brome, ripgut |
| burclover, California |
| canarygrass, hood |
| canarygrass, littleseed |
| chamomile, mayweed |
| chickweed, common |
| fiddleneck, coast |
| filarees |
| groundsel, common |
| henbit |
| knotweed, prostrate |
| ladysthumb |
| lettuce, prickly |
| mallow, little (cheeseweed) |
| milkthistles |
| miner's lettuce |
| mustards |
| nettle, burning |
| oat, wild |
| oxtongue, bristly |
| pimpernel, scarlet |
| pineapple-weed |
| radish, wild |
| redmaids (desert rockpurslane) |
| rocket, London |
| ryegrass, Italian |
| shepherd's-purse |
| smartweed, pale |
| sowthistle, annual |
| sowthistle, spiny |
| spurry, corn |
| stickleafs |
| tarweeds |
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Susceptibility of Spring/Summer Weeds to Herbicide Control
| Customize list of weeds |
ANNUAL WEEDS |
| barnyardgrass |
| bassia, fivehook |
| foxtails (yellow and green) |
| goosefoot, nettleleaf |
| knotweed, prostrate |
| kochia |
| lambsquarters, common |
| pigweed, redroot |
| polypogon, rabbitfoot |
| spurge, prostrate |
| starthistle, yellow |
| sunflowers |
| thistle, Russian |
| PERENNIAL WEEDS |
| bindweed, field (seedling) |
| bindweed, (mature plant) |
| buttercup, crowfoot |
| johnsongrass, (seedling) |
| johnsongrass, (mature plant) |
| nutsedge, yellow |
| smartweed, pale |
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PREPLANT
(nonselective) |
|---|
| GLY |
PAR* |
| C | C |
| C | C |
| C | C |
| C | C |
| P | P |
| C | N |
| C | C |
| C | C |
| C | — |
| C | C |
| C | N |
| C | C |
| C | P |
| |
| C | P |
| P | N |
| — | P |
| C | C |
| C | N |
| P | N |
| C | P |
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POSTPLANT
(selective) |
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| BRO |
CAR |
CHS |
DIA* |
FEN |
MCA* |
MES |
24D* |
TRA |
| N | N | N | N | C | N | — | N | — |
| C | — | — | C | N | N | — | C | — |
| N | N | N | N | C | N | — | N | C |
| C | P | C | C | N | C | — | — | — |
| N | — | C | C | N | C | N | C | — |
| C | — | P | C | N | P | — | P | — |
| C | C | C | C | N | C | — | C | — |
| P | C | C | C | N | C | — | C | — |
| N | N | N | N | N | N | — | N | — |
| P | C | C | P | N | P | — | — | — |
| C | P | C | C | N | C | P | C | — |
| C | P | C | C | N | C | — | C | — |
| C | — | C | C | N | P | — | C | — |
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| P | C | — | P | N | N | — | C | — |
| N | P | — | P | N | N | — | P | — |
| N | — | — | C | N | P | — | P | — |
| N | N | — | N | C | N | — | N | — |
| N | N | — | N | N | N | — | N | — |
| N | N | N | N | N | N | N | N | — |
| N | — | — | P | N | C | — | C | — |
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ANNUAL WEEDS |
| barnyardgrass |
| bassia, fivehook |
| foxtails (yellow and green) |
| goosefoot, nettleleaf |
| knotweed, prostrate |
| kochia |
| lambsquarters, common |
| pigweed, redroot |
| polypogon, rabbitfoot |
| spurge, prostrate |
| starthistle, yellow |
| sunflowers |
| thistle, Russian |
| PERENNIAL WEEDS |
| bindweed, field (seedling) |
| bindweed, (mature plant) |
| buttercup, crowfoot |
| johnsongrass, (seedling) |
| johnsongrass, (mature plant) |
| nutsedge, yellow |
| smartweed, pale |
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Ratings Legend
| C | = control |
P | = partial control |
N | = no control |
— | = no information |
Chemical Legend
| 24D = 2,4-D Amine* |
| BRO = bromoxynil (Buctril) |
| CAR = carfentrazone (Shark) |
| CHS = chlorsulfuron (Glean) |
| CLO = clopyralid (Stinger) |
| DIA = dicamba* (Banvel, Clarity) |
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| FEN = fenoxaprop (Puma) |
| GLY = glyphosate (Roundup) |
| MCA = MCPA Amine* |
| MES = mesosulfuron (Osprey) |
| PAR = paraquat* (Gramoxone) |
| TRA = tralkoxydim (Achieve) |
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Comments
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* Permit required from county agricultural commissioner for purchase or use.
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+ Control varies depending on size of weed at application; the smaller the weed, the better the control.
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UC IPM Pest Management Guidelines: Small Grains
UC ANR Publication 3466
Weeds
W. M. Canevari, UC Cooperative Extension, San Joaquin County
R. N. Vargas, UC Cooperative Extension, Madera County
S. D. Wright, UC Cooperative Extension, Tulare County
H. L. Carlson, ANR, UC Davis
L. F. Jackson, Agronomy, UC Davis
J. E. Hill, Agronomy, UC Davis
Acknowledgment for contributions to the weeds section:
M. J. Smith, UC Cooperative Extension, San Luis Obispo County
C. E. Bell, UC Cooperative Extension, San Diego County
D. W. Cudney, Botany and Plant Sciences, UC Riverside
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