Controlling Weeds in Nursery and Landscape Plantings

Bulletin 867-99

Contents

• Introduction
  
• Weed Control Program
  
• Weed Control Methods
  
  Physical Methods
  Chemical Methods
  
• Causes Of Herbicide Injury
  
• Steps To Take Before Applying An Herbicide
  
• Herbicide Formulations
  
• Calibration Of Equipment
  
  Granular Spreaders
  Sprayers
  
• Handy Worksheet For Calibrating A Boom Or Backpack Sprayer
• Procedures After Herbicide Applications
  
  Keeping Application Records
  Cultivating
  Cleaning Sprayers
  Storing Sprayers And Herbicides
  
• Controlling Plant Damage From Herbicide Residues
  
• Preemergence Herbicides
  
• Postemergence Herbicides
  
• Surfactants
  
• Fumigants
  
• Weed Control Recommendations
  
  Weed Control Prior To Planting
  Weed Control In Noncrop Areas
  Weed Control In Seedbeds
  Weed Control In Liner Beds
  Weed Control At Planting And During The First Growing Season
  Weed Control In Established Plantings
  Weed Control In Container-Grown Plants
  Weed Control In Herbaceous Plants, Flowers, And Ground Covers
  
• Appendix I Uses Of Preemergence Herbicides
  
• Appendix II Uses Of Postemergence Herbicides For Ornamentals And Site Preparation
  
• Appendix III Weeds Listed On Herbicide Labels
  
• Appendix IV List Of Plants On Herbicide Labels
  

Prepared by

The Pennsylvania State University:
Larry J. Kuhns, Professor of Horticulture
Tracey Harpster, Research Technician in Horticulture
Scott Guiser, Extension Agent

The Ohio State University:
Mary Ann Rose, Landscape/Nursery Specialist

To the user of this publication:

This publication contains pesticide recommendations that are subject to change at any time. These recommendations are provided only as a guide. It is always the pesticide applicator's responsibility, by law, to read and follow all current label directions for the specific pesticide being used. Due to constantly changing labels and product registration, some of the recommendations given in this writing may no longer be legal by the time you read them. If any information in these recommendations disagrees with the label, the recommendation must be disregarded. No endorsement is intended for products mentioned, nor is criticism meant for products not mentioned. The author, The Ohio State University and Ohio State University Extension assume no liability resulting from the use of these recommendations.

Herbicide cross-reference. Some herbicides are available under more than one trade name. To make the use of this publication as simple as possible, all of the herbicides labeled for use in ornamentals are cross-listed by their most commonly available trade names. The list of chemical names can be used to make comparisons with products marketed to homeowners, which may have many different formulations and trade names for the same product.

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