Windows of Control and Timetables for Horticultural Pesticide Application Presented by: Jeffrey Ling RCA ARBORWISE, LTD. TreeMasters, Inc. Fort Wayne, IN 260.456.0171 © Copyright 2012 ARBORWISE. LTD.
What is the Purpose of Applying Pesticides in Horticulture? “ The Bumper Sticker Story” There are multiple “Green” disciplines with different mandates and goals, but we all share a common goal:   Using regulated chemicals to achieve “our ends”,  Save Money – Make Money! © Copyright 2012 ARBORWISE. LTD.
Save Money – Make Money Economic Threshold:   >For  Cost -basis operations   > For  Profit -based operations Target  -  Tactic  -  Timing   The most expensive pesticide is  . . . the one which doesn’t work! © Copyright 2012 ARBORWISE. LTD.
The Four “S” of  Job Management Scan = Why Scope = Where, How Schedule  = When Safety = NOW! © Copyright 2012 ARBORWISE. LTD.
Pesticide Application Schedule: Variables which affect Applications - Business Management Pesticide Mode of Action Plant Morphology Target Manifest © Copyright 2012 ARBORWISE. LTD.
Pesticide Application Schedule: When will the target be “available” for control? Predictable? YES!! “ Degree Day Directive” © Copyright 2012 ARBORWISE. LTD.
Pesticide Application Timing What are Growing Degree Days? GDD measurements start March 1, and the GDDs for each day are added to the previous total. (When the average temperature for the day is below 50 F, it is ignored. It is  not  subtracted from the total.) Max Temp. + Min. Temp.   - 50 = Daily GDD   2   www.gardening.cornell.edu/weather/gdd.html   http://www.weather.com/outdoors/agriculture/growing-degree-days/ http://www.gddtracker/net/ © Copyright 2012 ARBORWISE. LTD.
Pesticide Application Timing How can GDD assist in a pest/disease management program? Service timing : Pest specific variables :  >ground dwelling vs.  wood dwelling Site specific variables :    > solar sinks vs. protected space Examples:  Target  –  Tactic  -  Timing © Copyright 2012 ARBORWISE. LTD.
Pesticide Application Timing Aids http://www.mortonarb.org/tree-plant-advice/16919/so-what are-degree-days-and-why-do-we-care-about-them-anyway.html http://www.oardc.ohio-state.edu/gdd/ http://www.ipm.msu.edu/landscapeipm/gddarticle.html http://www.gemplers.com/tech/monitordays.html Insect and Mite Control on Woody Ornamentals and Herbaceous Perennials   “ E-41 ”  PUCES  5/97 pg. 22, 23 © Copyright 2012 ARBORWISE. LTD.

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Windows Of Control 02072012

  • 1. Windows of Control and Timetables for Horticultural Pesticide Application Presented by: Jeffrey Ling RCA ARBORWISE, LTD. TreeMasters, Inc. Fort Wayne, IN 260.456.0171 © Copyright 2012 ARBORWISE. LTD.
  • 2. What is the Purpose of Applying Pesticides in Horticulture? “ The Bumper Sticker Story” There are multiple “Green” disciplines with different mandates and goals, but we all share a common goal: Using regulated chemicals to achieve “our ends”, Save Money – Make Money! © Copyright 2012 ARBORWISE. LTD.
  • 3. Save Money – Make Money Economic Threshold: >For Cost -basis operations > For Profit -based operations Target - Tactic - Timing The most expensive pesticide is . . . the one which doesn’t work! © Copyright 2012 ARBORWISE. LTD.
  • 4. The Four “S” of Job Management Scan = Why Scope = Where, How Schedule = When Safety = NOW! © Copyright 2012 ARBORWISE. LTD.
  • 5. Pesticide Application Schedule: Variables which affect Applications - Business Management Pesticide Mode of Action Plant Morphology Target Manifest © Copyright 2012 ARBORWISE. LTD.
  • 6. Pesticide Application Schedule: When will the target be “available” for control? Predictable? YES!! “ Degree Day Directive” © Copyright 2012 ARBORWISE. LTD.
  • 7. Pesticide Application Timing What are Growing Degree Days? GDD measurements start March 1, and the GDDs for each day are added to the previous total. (When the average temperature for the day is below 50 F, it is ignored. It is not subtracted from the total.) Max Temp. + Min. Temp.   - 50 = Daily GDD 2 www.gardening.cornell.edu/weather/gdd.html http://www.weather.com/outdoors/agriculture/growing-degree-days/ http://www.gddtracker/net/ © Copyright 2012 ARBORWISE. LTD.
  • 8. Pesticide Application Timing How can GDD assist in a pest/disease management program? Service timing : Pest specific variables : >ground dwelling vs. wood dwelling Site specific variables : > solar sinks vs. protected space Examples: Target – Tactic - Timing © Copyright 2012 ARBORWISE. LTD.
  • 9. Pesticide Application Timing Aids http://www.mortonarb.org/tree-plant-advice/16919/so-what are-degree-days-and-why-do-we-care-about-them-anyway.html http://www.oardc.ohio-state.edu/gdd/ http://www.ipm.msu.edu/landscapeipm/gddarticle.html http://www.gemplers.com/tech/monitordays.html Insect and Mite Control on Woody Ornamentals and Herbaceous Perennials “ E-41 ” PUCES 5/97 pg. 22, 23 © Copyright 2012 ARBORWISE. LTD.