Calculating Correct Amounts
How To Calculate The Area to be Treated
The most efficient, quick and accurate way to find out the area of your property as long as there is not too much tree coverage, is by using a program or app called a Geo Measure Area Calculator or Map Measurement tool.
You can always do it the old fashion way by getting out a measuring tape and measuring out the square footage of the area that needs to be treated. If this is your cup of tea here are some tricks to making it as accurate as you can. The area that you plan on treating most likely won’t be geometrically perfect. Irregular shaped sections of lawn and flower beds can be broken down to smaller geometric areas, (square, rectangles, circles, triangles) then simply put together like a puzzle and added together to get the total area.
Here are some calculations on geometric areas:
Triangle area = (Base x Height) / 2
Example: If the base of the triangle is 100 ft. and the height is 35 ft., the equation would be
Triangle area = (100x35) / 2 = 1750 sq. ft.
Rectangular or Square area = L x W
Example: If the two side measure 75 ft. by 40 ft., the equation would be
Rectangular area = 75x40 = 3,000 sq. ft.
Circular area = (Radius2)3.14
Example: If the area diameter measures 20 ft., the radius would be half that, 10 ft. The equation would be
Circular area = (10 x 10) x 3.14 = 314 sq. ft.
How Much Product Do I Need to Mix?
Example: Apply 6 oz. C1 per 1000 sq. ft.
Now that you have your area to be treated, let’s say its 4,800 sq. ft. How much product will you need for a 4800 sq. ft. area?
First Step: 4800 / 1000 = 4.8(units of 1000 sq. ft.)
Second Step: 4.8 x 6 oz. = 28.8 oz. of product for your calculated area of 4800 ft. sq.
At What Ratio Do I Mix The Product With Water?
First you need to decide what kind of equipment you are going to use to apply the treatment, so you can calibrate how much water to product ratio you should mix in the tank.
In this example lets take a hand pump sprayer(this will work for any kind of sprayer). Fill the Sprayer with 1 gallon of water. Mark out a 100 sq. ft. area that is part of the desired area that will be treated. Accurately time how long it takes to fully spray the 100 Sq. Ft. area.(make sure the sprayer is fully compressed)
Note: If treatment is for foliar, just spray enough to dampen the foliage and not drip off onto the ground. If treatment is for a soak, just spray enough to soak into the ground, not run off.
Calibration Example: It took 15 second to spray the marked out 100 sq. ft. area.
Then take a bucket or beaker using the same sprayer and pressure, and fill it up for the same time (15 seconds).
Measure the amount of water that came out of the sprayer for that 15 seconds.
Info Example: In that 15 seconds you sprayed 8 oz. of water.
Calculation Example: If we take our above example of area that will be treated, 4800 sq. ft. the equation would be.
(4800 / 100) x 8 oz. = 384 This is how much water in ounces you will use to treat the calculated area.
Then convert the ounces to gallons. 384 / 128 = 3 gallons
Conclusion: Fill up your pump sprayer with 3 gallons of water and from our above example add 28.8 oz. of product. Now spray the 4800 sq. ft. area with the correct mixed ration making sure your spray coverage is the same as when you did your calibration.
If wanting to know and write down the ratio for future treatments for the same area. 384 / 28.8 = 13.3 ratio = 13:1 (13 oz. of water to 1 oz. of product)