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Calculating Dilutions and Site Size: 

Calculating Dilutions and Site Size Pesticide Applicator Core Training Manual Part B, Chapter 3

Chapter Concepts: 

Chapter Concepts Determine pesticide amounts Dilution formulas Conversion formulas Calculating surface area Calculating volumes

Correct Application: 

Correct Application Dilute the formulation Calculate site size Calibrate equipment APPROVED

Diluting Pesticides Correctly: 

Diluting Pesticides Correctly Know sprayer capacity Calibrate equipment Correctly measure site Know the application rate Use the formulas Use common sense!

Diluting Dry Formulations: 

Diluting Dry Formulations Pounds Per 100 Gallons

Diluting Dry Formulations: 

Diluting Dry Formulations Pounds of Formulation Per Acre

Diluting Dry Formulations: 

Diluting Dry Formulations Pounds of Formulation per 1,000 Square Feet

Diluting Dry Formulations: 

Diluting Dry Formulations Pounds of Active Ingredient (a.i.) per Acre

Diluting Dry Formulations: 

Diluting Dry Formulations Percent of Active Ingredient in Tank

Diluting Liquid Formulations: 

Diluting Liquid Formulations Pints/Quarts/Gallons Per 100 Gallons

Diluting Liquid Formulations: 

Diluting Liquid Formulations Pints/Quarts/Gallons of Formulation per Acre

Diluting Liquid Formulations: 

Diluting Liquid Formulations Pints/Quarts of Formulation per 1,000 Square Feet

Diluting Liquid Formulations: 

Diluting Liquid Formulations Pounds of Active Ingredient per Acre

Diluting Liquid Formulations: 

Diluting Liquid Formulations Percentage of Active Ingredient in Tank

Diluting Liquid Formulations: 

Diluting Liquid Formulations Mixing Concentrates for Airblast Sprayers or Mist Blowers Pounds/gallons of formulation per tank x concentration factor equals Pounds/gallons formulation per tank in concentrate form Example:

Diluting Liquid Formulations: 

Diluting Liquid Formulations Converting Between Square Feet and Acres

Calculating Size of Target Sites: 

Calculating Size of Target Sites Regularly Shaped Sites - Rectangles

Calculating Size of Target Sites: 

Calculating Size of Target Sites Regularly Shaped Sites - Circles

Calculating Size of Target Sites: 

Calculating Size of Target Sites Regularly Shaped Sites - Triangles Area equals W x H 2

Calculating Size of Target Sites: 

Irregularly Shaped Sites Area equals (W x H divided by 2) + (L1 x W1) + (L2 x W2) Calculating Size of Target Sites

Calculating Size of Target Site: 

Calculating Size of Target Site Take an irregularly shaped site and reduce it into combinations of shapes- rectangles, circles, triangles. Calculate the area of each and add them together for total area. What shapes do you see in this figure?

Calculating Size of Target Sites: 

Calculating Size of Target Sites Volume of Enclosed Spaces - Spaces Shaped like Cubes or Boxes

Calculating Size of Target Sites: 

Calculating Size of Target Sites Volume of Enclosed Spaces - Spaces Shaped like Cylinders

Calculating Size of Target Sites: 

Calculating Size of Target Sites Volume of Enclosed Spaces - Tent Shaped Spaces

Calculating Size of Target Sites: 

Calculating Size of Target Sites Volume of Enclosed Spaces - Flat-topped Tent-shaped Spaces

Calculating Size of Target Sites: 

Calculating Size of Target Sites Volume of Enclosed Spaces - Quonset-style Structures

In Conclusion: 

In Conclusion Know sprayer capacity Calibrate equipment Correctly measure site Know the application rate Use the formulas Use common sense!

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