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How to Manage Pests
UC Pest Management Guidelines
Avocado
Susceptibility of Weeds to Herbicide Control
(Reviewed 1/07,
updated 8/08)
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In this Guideline:
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More about weeds in avocado:
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Susceptibility of Weeds to Herbicide Control in Avocado
| Customize list of weeds |
| ANNUAL WEEDS |
| Grasses |
| barley, hare (wild barley) |
| barnyardgrass |
| bluegrass, annual |
| crabgrasses |
| foxtail, yellow |
| lovegrasses (stinkweeds) |
| oats, wild |
| ryegrass |
| sandbur, longspine |
| spangletop |
| witchgrass (fall panicum) |
| Broadleaves |
| cocklebur |
| goosefoot |
| groundsel, common |
| knotweed |
| lambsquarters |
| mallow, little (cheeseweed, malva) |
| mustards |
| nettle, burning |
| nightshade, black |
| nightshade, hairy |
| pigweed |
| puncturevine |
| purslane |
| sowthistle |
| starthistle, yellow |
| thistle, Russian |
| velvetleaf |
| PERENNIALS |
| Seedling |
| bermudagrass |
| bindweed, field |
| dallisgrass |
| johnsongrass |
| Established |
| bermudagrass |
| bindweed, field |
| dallisgrass |
| fescue |
| johnsongrass |
| nutsedge, purple |
| nutsedge, yellow |
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| PREEMERGENCE |
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| NOR1 |
SIM1 |
| |
| C | C |
| P | P |
| C | C |
| P | N |
| C | C |
| P | C |
| P | C |
| C | P |
| P | C |
| P | N |
| C | C |
| |
| C | C |
| C | C |
| P | P |
| P | C |
| P | C |
| P | P |
| P | C |
| C | C |
| C | C |
| C | C |
| P | C |
| C | P |
| P | C |
| P | C |
| — | C |
| C | C |
| — | — |
| |
| |
| C | P |
| N | C |
| N | C |
| C | C |
| |
| P | N |
| N | N |
| N | N |
| C | — |
| P | N |
| P | N |
| P | N |
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| POSTEMERGENCE |
|---|
| GLY2 |
SET3 |
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| C | P |
| C | C |
| C | N |
| C | C |
| C | C |
| C | — |
| C | C |
| C4 | C |
| C | C |
| C | C |
| C | C |
| |
| C | N |
| C | N |
| C | N |
| P | N |
| C | N |
| P | N |
| C | N |
| N | N |
| C | N |
| C | N |
| C | N |
| C | N |
| P | N |
| C | N |
| C | N |
| C | N |
| P | N |
| |
| |
| C | C |
| C | N |
| C | C |
| C | C |
| |
| C | P |
| P | N |
| C | — |
| C | — |
| C | C |
| P | N |
| P | N |
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| ANNUAL WEEDS |
| Grasses |
| barley, hare (wild barley) |
| barnyardgrass |
| bluegrass, annual |
| crabgrasses |
| foxtail, yellow |
| lovegrasses (stinkweeds) |
| oats, wild |
| ryegrass |
| sandbur, longspine |
| spangletop |
| witchgrass (fall panicum) |
| Broadleaves |
| cocklebur |
| goosefoot |
| groundsel, common |
| knotweed |
| lambsquarters |
| mallow, little (cheeseweed, malva) |
| mustards |
| nettle, burning |
| nightshade, black |
| nightshade, hairy |
| pigweed |
| puncturevine |
| purslane |
| sowthistle |
| starthistle, yellow |
| thistle, Russian |
| velvetleaf |
| PERENNIALS |
| Seedling |
| bermudagrass |
| bindweed, field |
| dallisgrass |
| johnsongrass |
| Established |
| bermudagrass |
| bindweed, field |
| dallisgrass |
| fescue |
| johnsongrass |
| nutsedge, purple |
| nutsedge, yellow |
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Ratings Legend
| C | = control |
P | = partial control |
N | = no control |
— | = no information |
Chemical Legend
| GLY = glyphosate (Roundup, Touchdown etc.) |
| NOR = norflurazon (Solicam) |
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| SET = sethoxydim (Poast) |
| SIM = simazine (Princep) |
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Comments
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1 Considered to be a ground water contaminant and requires a use permit within Ground Water Protection Areas.
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2 Contact with spray or drift can severely damage avocado.
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3 For use on nonbearing trees only.
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4 Some populations of rigid ryegrass (Lolium rigidum) are resistant to glyphosate.
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UC IPM Pest Management Guidelines: Avocado
UC ANR Publication 3436
Weeds
B. A. Faber, UC Cooperative Extension, Santa Barbara/Ventura counties
A. Shrestha, UC Statewide IPM Program, Kearney Agricultural Center, Parlier
W. T. Lanini, Weed Science/Plant Sciences, UC Davis
C. A. Wilen, UC Statewide IPM Program, San Diego County
P. A. Phillips, UC IPM Program, UC Cooperative Extension, Ventura County
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