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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About 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
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