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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Bermudagrass Seed Production

Herbicide Treatment Table

(Reviewed 1/07, updated 1/07)

In this Guideline: More about weeds in bermudagrass seed production:
Common name Amount/Acre R.E.I.+ P.H.I.+
(trade name)   (hours) (days)
When choosing an herbicide, consider information relating to environmental impact.
 
A. 2,4-D AMINE*      
  (Amine 4)
0.5–0.95 lb
48
0
  MODE OF ACTION: A phenoxy-carboxylic-acid (Group 4)1 herbicide.
  COMMENTS: Apply to small broadleaf weeds before bermudagrass seed heads start to form. Follow label instructions and local regulations to avoid damage to adjacent crops.
   
B. DICAMBA*
  (Banvel)
0.25–0.5 lb
24
0
  MODE OF ACTION: A benzoic acid (Group 4)1 herbicide.
  COMMENTS: Apply to small broadleaf weeds before bermudagrass seed heads start to form. Follow label instructions and local regulations to avoid damage to adjacent crops.
   
C. BROMOXYNIL
  (Buctril)
0.25–0.5 lb
12
0
  MODE OF ACTION: A nitrile (Group 6)1 herbicide.
  COMMENTS: Effective for control of winter annual broadleaf weeds if applied when weeds are very small (2- to 4-leaf stage of growth).
   
D. TRIFLURALIN
  (Gowan Trifluralin) 10G
20 lb
12
0
  MODE OF ACTION: A dinitroaniline (Group 3)1 herbicide.
  COMMENTS: Use allowed under a Special Local Needs permit. Can be applied after the fields are burned to kill off old growth for control of several annual weeds, but field trials have not demonstrated worthwhile results.
         
E. CARFENTRAZONE-ETHYL      
  (Shark) EW
0.008–0.03 lb
12
0
  MODE OF ACTION: A triazolinone (Group 14)1, herbicide.
  COMMENTS: Effective for control of some winter annual broadleaf weeds if applied when weeds are small (up to 4 inches tall). Control is enhanced with the addition of a nonionic surfactant or crop oil concentrate.
   
+ Restricted entry interval (R.E.I.) is the number of hours from treatment until the treated area can be safely entered without protective clothing. Preharvest interval (P.H.I.) is the number of days from treatment to harvest. In some cases the REI exceeds the PHI. The longer of the two intervals is the minimum time that must elapse before harvest.
* 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.plantprotection.org/HRAC/.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Bermudagrass Seed Production
UC ANR Publication 3472
Weeds
B. Tickes, University of Arizona Cooperative Extension, Yuma Co., AZ
Acknowledgment for contributions to the weed section:
C. E. Bell, UC Cooperative Extension, San Diego Co.

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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