Use Directions And Precautions

Common bermudagrass

(suppression)

POST

fenoxaprop -ACCLAIM EXTRA*

0.46 fl. oz.

Ky. Bluegrass Fine Fescue Tall Fescue

Zoysia

Requires precise application.

Initial application in spring when common bermuda breaks dormancy. Repeat application every 3 to 4 weeks (dependent on re-growth).

Annual blue-grass and winter broadleaf weeds

PRE and POST

simazine -PRINCEP 4 L

Centipedegrass

Zoysia

For annual bluegrass, apply after Oct. 1st. Provides PRE and early POST control of this weed and winter annual broadleaf weeds.

For summer annual weeds, can be used in the spring, up to June 1st.

Requires %% inch rainfall or irrigation within 10 days after application.

Do not seed or over-seed within 4 months before or 6 months after application.

Annual blue-grass and winter broadleaf weeds

POST

glyphosate -(VARIOUS) ROUNDUP 4 L

0.37 fl. oz.

Bermudagrass (DORMANT)

Apply to dormant bermudagrass only. Must be applied when dormant prior to spring greenup. May requ ire surfactant (refer to produ ct label).

diquat

-REWARD 2 L

0.4 to 0.75 fl. oz.

BROADLEAF WEEDS (Annuals and Perennials) : PRE and POST HERBICIDE OPTIONS

Overall Comments: The following table lists preemergence (PRE) and post-emergence (POST) herbicides for control of broadleaf weeds. Several POST herbicides are available that selectively control established broadleaf weeds in established lawns. Established broadleaf weeds can be controlled with POST herbicide options. For optimum control, application(s) need to be timed early in the life cycle of sum mer and winter an nuals. Established perenn ials (e.g. wild onion), may require repeat application(s).

Note: For summer annual broadleaf weeds, PRE herbicides for summer annual grasses may provide limited (product dependent) PRE activity towards summer annual broadleaf weeds (refer to weed susceptibility table).

  • POST herbicides for broadleaf weeds do not require activation by rain or irrigation.
  • If lawn is under drought stress, irrigate or wait for a rain to cause weeds to resume active growth.
  • Do not apply if rain is forecast.
  • Ensure uniform application and do not overlap spray pattern.

PRECAUTIONS: Products containing "phenoxy" herbicides, such as 2,4-D, MCPP and dicamba, can cause injury to or loss of desired plants, shrubs and trees. Injury can result from:

  1. Phenoxy herbicides can release vapors from treated areas into the air and drift. Application of products containing these herbicides must be applied when the air temperature is less than 85 F.
  2. Application of products containing these herbicides combined with other herbicides for non-selective weed control. Read the product label to be sure that the product is intended for use on lawns.
  3. Application underneath or around desired vegetation.
  4. Application or over-application to areas of the lawn where roots of desired vegetation are established.
  5. Application when air is not still.
  6. Use of the same sprayer to make later application of fungicides or insecticides to desired vegetation. Removal of phenoxy herbicide residues from the sprayer after application is very difficult. Thus, an individual sprayer should be designated for application of herbicides. A second sprayer shou ld be used for application of other pesticides.

Fertilizer/ Herbicide Combinations: Granular fertilizer products pre-mixed with phenoxy herbicides are readily available. However, postemergence control may be less than desirable when applied in granular form. For optimum activity and dollar value, these herbicides need to be applied POST (alone, not mixed with fertilizer) as liquids (contacting the foliage).

Target Weeds and

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Responses

  • gaetana
    How to apply herbicide?
    8 years ago

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