**Section III. PESTICIDE APPLICATION CALCULATIONS**

**2-12. DETERMINING REQUIREMENTS**

a. ** General. **Mixing and diluting pesticides to required strengths and quantities

is only one step in pest control operations. Before preparing the formulations, we must

determine the quantities and strengths that are required for our particular task. Pest

control operations do not fall within the scope of this subcourse; however, determining

requirements for pesticides will be discussed in this section.

b. ** Recommendations. **Technical Information Memorandum (TIM) 24,

Contingency Pest Management Pocket Guide, has a comprehensive list of

recommended pesticides, strengths, and rates of application for attacking various

insects and other pests. However, the pesticide label itself is the ultimate source of

guidance on pesticide application rates. Depending upon the type of application

(agricultural use; household use; outdoor control of flies, mosquitoes, mites; etc.) the

units of measure may vary.

c.

**Requirements. **The amount of final formulation depends upon two factors:

(1) The area to be treated.

(2) The rate of application.

d. ** Computaton. **The amount of formulation required is determined by

multiplying the area in acres or square feet (usually in thousands) by the number of

gallons or pounds of final formulation per acre or square feet (1,000 square feet).

**2-13. CALCULATING AREAS**

a. ** Area in Square Feet. **The area of a given tract of land, household space,

or storage space is determined by multiplying the length by the width. For example, a

field 300 feet long and 150 feet wide contains 45,000 square feet (300 X 150 = 45,000).

If a given pesticide should be applied at the rate of 1 gallon per 1,000 square feet, the

total amount required for this field would be 45 gallons (45,000/1,000 = 45). Obviously,

the above calculation applies only to a rectangle. Other simple formulas for calculating

the areas of common figures follow.

MD0173

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