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How to Manage Pests

UC Pest Management Guidelines


Outside view of greenhouse ventilation fan boxes with louvered covers.

Floriculture and Ornamental Nurseries

Treatment (Outside Greenhouses)

(Reviewed 7/00, updated 7/00)

In this Guideline: More about weeds in floriculture and ornamental nurseries:

   
  Herbicide
(commercial name)
Amount/Acre  

  PREEMERGENT HERBICIDES
A. ORYZALIN 2-4 lb a.i.
  (Surflan) 2-4 qt
  COMMENTS: Apply to weeds or combine with a postemergent herbicide if young weeds are present. May be combined with other preemergent herbicides to control grass and some broadleaf weeds.
     
B. PRODIAMINE
  (Endurance, Factor) 0.65-1.5 lb
  COMMENTS: Apply as a preemergent treatment. May be combined with a postemergent herbicide if young weeds are present. May be combined with other preemergent herbicides to control grasses and some broadleaf weeds.
     
C. PENDIMETHALIN 2-4 lb a.i.
  (Pendulum) 3.3 EC or 60% WDG  
  COMMENTS: Apply as a preemergent treatment. May be combined with a postemergent herbicide if young weeds are present. May be combined with other preemergent herbicides to control grasses and some broadleaf weeds.
     
D. NORFLURAZON
  (Predict) 2-4 lb
  COMMENTS: May be combined with a postemergent or other preemergent herbicide to give a broader weed spectrum. Do not apply to soil that may erode into desirable planted areas.
     
E. ISOXABEN  
  (Gallery) 1 lb
  COMMENTS: Apply preemergent or combine with a postemergent herbicide if young weeds are established. May be combined with other preemergent herbicides to control additional broadleaf weeds.
     
  POSTEMERGENT HERBICIDES
A.GLYPHOSATE
 (Roundup Pro)Annuals: 2 qt-1 gal/100gal water or 0.66-1.33 oz/gal water
  Perennials: up to 2 gal/100 gal water
 COMMENTS: Apply lower rates to young weeds. Apply to perennials when in flower stage and the soil moisture is good enough to maintain active growth of the weeds.
 
B.DIQUAT
 (Reward)1-2 pt plus 16-32 oz nonionic surfactant/100 gal water
 COMMENTS: Apply 15-40 gal/acre or enough to wet young weeds. Apply to young weeds for improved control.

[Precautions]

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Floriculture and Ornamental Nurseries
UC ANR Publication 3392
Weeds
C. L. Elmore, Weed Science/Vegetable Crops, UC Davis
C. A. Wilen, UC IPM Program, UC Cooperative Extension, San Diego Co.

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Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2005 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/r280701011.html revised: June 13, 2005. Contact webmaster.