1. Calibration Principles

3. Calibrating a Sprayer zUnderstand variables zSet variables zTrial application with water zDetermine output zAdjust zFigure tank mix

9. Variables Variables zPressure zNozzle orifice size zTravel speed zNozzle spacing

15. GPA x MPH X W (in.) 5940 zGPM — nozzle output 1.Pressure 2.Nozzle orifice size zGPA — spray volume zMPH — travel speed zW — nozzle spacing GPM =

16. GPA x MPH X W (in.) 5940 GPM =

17. 40 GPA x MPH X W (in.) 5940 GPM =

20. 40 GPA x 3 MPH X 10 W (in.) 5940 GPM = GPM =.20 for one nozzle

21. Nozzle Choice Factors GPMpressure fan angle / boom height

22. Tip No.PressureGPM 20.14 25.16 800230.17 40.20 50.23 20.21 25.24 30.26 40.30 8003

23. 8002

28. Major Adjustment Nozzle orifice size Minor Adjustment Pressure travel speed

32. You are trying to control dallisgrass in a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to add to each tankful of spray mix? Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per gallon).

33. 200 gals. / tank 40 gals. / acre = 5 acres / tank

34. You are trying to control dallisgrass in a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to add to each tankful of spray mix? Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per gallon). 200 gals. / tank 40 gals. / acre = 5 acres / tank 5 acres/tank x 3 lbs. MSMA/A = 15 lbs. MSMA/tank 15 lbs. MSMA/tank 6 lbs. MSMA/gal. of Daconate 2.5 lbs. of Daconate/tank =

35. You are trying to control dallisgrass in a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to add to each tankful of spray mix? Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per gallon). 200 gals. / tank 40 gals. / acre = 5 acres / tank 5 acres/tank x 3 lbs. MSMA/A = 15 lbs. MSMA/tank

36. How much Barricade 65 WG do you add to a 150 gallon sprayer to apply 1.5 lbs. product per acre? The sprayer was calibrated to apply 25 gallons water per acre.

37. 150 gals. / tank 25 gals. / acre = 6 acres / tank

38. How much Barricade 65 WG do you add to a 150 gallon sprayer to apply 1.5 lbs. product per acre? The sprayer was calibrated to apply 25 gallons water per acre. 150 gals. / tank 25 gals. / acre = 6 acres / tank 6 acres/tank x 1.5 lbs. Barricade 65 WG/acre = 9 lbs. Barricade 65 WG/acre

39. You have had a severe problem with crabgrass in the past years and this year you decide to treat your fairways (30 acres) with the preemergent herbicide, Pre-M 60 DG at a rate of 3 lbs. of active ingredient per acre. Your 100 gal. capacity sprayer is calibrated to put out 25 gpa. How much Pre-M 60 DG do you add to each tankful of spray mix?

40. 100 gals. / tank 25 gals. / acre = 4 acres / tank

41. You have had a severe problem with crabgrass in the past years and this year you decide to treat your fairways (30 acres) with the preemergent herbicide, Pre-M 60 DG at a rate of 3 lbs. of active ingredient per acre. Your 100 gal. capacity sprayer is calibrated to put out 25 gpa. How much Pre-M 60 DG do you add to each tankful of spray mix? 100 gals. / tank 25 gals. / acre = 4 acres / tank 4 acres/tank x 3 lbs. a.i./A = 12 lbs. a.i./tank

42. You have had a severe problem with crabgrass in the past years and this year you decide to treat your fairways (30 acres) with the preemergent herbicide, Pre-M 60 DG at a rate of 3 lbs. of active ingredient per acre. Your 100 gal. capacity sprayer is calibrated to put out 25 gpa. How much Pre-M 60 DG do you add to each tankful of spray mix? 4 acres/tank x 3 lbs. a.i./A = 12 lbs. a.i./tank 100 gals. / tank 25 gals. / acre = 4 acres / tank 12 lbs. a.i./tank 0.6 lbs. a.i./1 lb Pre-M 60 DG 20 lbs. Pre-M 60 DG/tank =