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HERBICIDE PERCENT SOLUTION
(For labeled herbicide rates provided in percent)
EXAMPLE WORKSHEET
CALCULATE ACRES TO BE TREATED:
1. 6 (feet) area width × 100,000 (feet) area length = (A) 600,000 (square feet) spray area
2. (A) 600,000 (square feet) spray area ÷ 43,560 (square feet per acre) = (B) 13.77 acres to be treated
CALCULATE HERBICIDE SOLUTION TO BE USED:
3. If using a spray truck reset control panel to the appropriate (GPA) application rate for broadcast applications (C) 36 (GPA) application
rate
4. (C) 36 (GPA) application rate × (B) 13.77 acres to be treated = (D) 495.72 (gallons) mixed herbicide solution to be used
CALCULATE HERBICIDE VOLUME TO BE USED:
5. READ THE LABEL to determine appropriate herbicide rate by percent solution: (E) 2 (%) herbicide rate
6. (D) 495.72 (gallons) mixed herbicide solution needed × (E) 2 (%) herbicide rate = (F) 9.91 (gallons) herbicide needed
7. If herbicide recommends using adjuvants, check adjuvant label for rate [ 32 ounces of adjuvant per 100 gallons of herbicide solution
x (D) 495.72 (gallons) mixed herbicide solution needed = 15,863.04 ÷ 100 = (G) 158.63 ounces of adjuvant to use]
CALCULATE GALLONS OF WATER NEEDED:
8. If needed convert adjuvant volume from ounces to gallons [ (G) 158.63 (ounces) adjuvant volume ÷ 128 = (H) 1.24 gallons adjuvant
volume to be used
9. Add (F) 9.91 (gallons) herbicide needed + (H) 1.24 (gallons) adjuvant volume to be used = (I) 11.15 gallons of additives
10. Subtract (I) 11.15 (gallons) additives from (D) 495.72 (gallons) mixed herbicide solution to be used = 484.57 gallons of water
to be used
