Windows Of Control 02072012

Windows of Control and Timetablesfor Horticultural Pesticide Application

Presented by:Jeffrey Ling RCA

ARBORWISE, LTD.TreeMasters, Inc.

Fort Wayne, IN260.456.0171

© 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!


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!


The Four “S” of Job Management

1. Scan = Why

2. Scope = Where, How

3. Schedule = When

4. Safety = NOW!


Pesticide Application

Schedule:

Variables which affect Applications -1. Business Management

2. Pesticide Mode of Action

3. Plant Morphology

4. Target Manifest


Pesticide Application

Schedule:When will the target be “available” for control?

Predictable? YES!!

“Degree Day Directive”


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/


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


Pesticide Application Timing Aidshttp://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


Windows Of Control 02072012

Documents

Transcript of Windows Of Control 02072012