Agriculture Reference
In-Depth Information
Example 8:
Your sprayer applies 22 gallons per acre and your tank holds 400 gallons.
The label rate is 1.5
quarts per acre.
Gallons
in
tank (400) X quarts
per acre (1.5)
= 400 X 1.5 ÷ 22 =
Gallons per acre (22
)
27.3 qts. needed in tank
If the recommendation for the liquid formulation is listed as pounds of ac-
tive ingredient per acre, you must first convert that figure to gallons of formu-
lation to apply per acre. The label of a liquid formulation always tells how
many pounds of active ingredient are in one gallon of the concentrated formu-
lation (4 EC has 4 pounds of active ingredient per gallon; 6 EC contains 6
pounds per gallon, etc.).
per acre
Pounds of active ingredient per gallon of formulation
Pounds
of active
ingredient
needed
= Gallons of formulation per acre
Example 9:
The recommendation is for 1 pound of active ingredient per acre. You
purchased an 8 EC, which contains 8 pounds of active ingredient per gallon.
Your tank holds 500 gallons and is calibrated to apply 25 gallons per acre.
Pounds a.i.
to apply
per acre (
1 )
= 1 ÷
8 = .125 (1/8)
Pounds a.i. per gallon (8)
1
/
8 gallons (1 pint) per acre
Gallons
tank (500)
= 500 ÷ 25 = 20 Acres per tankful
Gallons per acre (25)
in
Acres per tankful (20) X gallons per acre (1/8 or .125) = Gallons to add to
tank (2.5)
20 x .125 = 2.5
