CONFIDENTIAL 1 Variables and Expressions Variables and Expressions.
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Calibration Calibration
PrinciplesPrinciples
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Calibrating a SprayerCalibrating a Sprayer
Understand variablesUnderstand variablesSet variablesSet variablesTrial application with Trial application with waterwaterDetermine outputDetermine outputAdjustAdjustFigure tank mixFigure tank mix
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VariablesVariables
PressurePressure
Nozzle orifice sizeNozzle orifice size
Travel speedTravel speed
Nozzle spacingNozzle spacing
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GPA x MPH X W (in.)GPA x MPH X W (in.)59405940
GPM — nozzle outputGPM — nozzle output1.1. PressurePressure
2.2. Nozzle orifice sizeNozzle orifice size
GPA — spray volumeGPA — spray volumeMPH — MPH — travel speedtravel speedW — W — nozzle spacingnozzle spacing
GPM = GPM =
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GPA x MPH X W (in.)GPA x MPH X W (in.)59405940GPM = GPM =
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4040 GPA x MPH X W (in.) GPA x MPH X W (in.)59405940
GPM = GPM =
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4040 GPA x GPA x 33 MPH X MPH X 1010 W (in.) W (in.)59405940
GPM = GPM =
GPM = GPM = .20 for one nozzle.20 for one nozzle
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Nozzle Choice FactorsNozzle Choice Factors
GPMGPM
pressurepressure
fan angle / boom heightfan angle / boom height
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Tip No.Tip No. PressurePressure GPMGPM
2020 .14.14
2525 .16.16
80028002 3030 .17.17
4040 .20.20
5050 .23.23
2020 .21.21
2525 .24.24
3030 .26.26
4040 .30.3080038003
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8002
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Major AdjustmentMajor Adjustment
Nozzle orifice sizeNozzle orifice size
Minor AdjustmentMinor Adjustment
PressurePressure
travel speedtravel speed
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You are trying to control dallisgrass in You are trying to control dallisgrass in a bermudagrass turf and need to apply a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per acre. MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to How much Daconate do you need to add to each tankful of spray mix? add to each tankful of spray mix? Assume you are using a 200 gal. Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per (Daconate contains 6 lbs. MSMA per gallon).gallon).
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You are trying to control dallisgrass in a bermudagrass You are trying to control dallisgrass in a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per turf and need to apply MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to add to each acre. How much Daconate do you need to add to each tankful of spray mix? Assume you are using a 200 gal. tankful of spray mix? Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. (Daconate Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per gallon).contains 6 lbs. MSMA per gallon).
200 gals. / tank200 gals. / tank
40 gals. / acre40 gals. / acre= 5 acres / tank= 5 acres / tank
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You are trying to control dallisgrass in a bermudagrass You are trying to control dallisgrass in a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per turf and need to apply MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to add to each acre. How much Daconate do you need to add to each tankful of spray mix? Assume you are using a 200 gal. tankful of spray mix? Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. (Daconate Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per gallon).contains 6 lbs. MSMA per gallon).
200 gals. / tank200 gals. / tank
40 gals. / acre40 gals. / acre= 5 acres / tank= 5 acres / tank
5 acres/tank x 3 lbs. MSMA/A = 15 lbs. MSMA/tank5 acres/tank x 3 lbs. MSMA/A = 15 lbs. MSMA/tank
15 lbs. MSMA/tank15 lbs. MSMA/tank
6 lbs. MSMA/gal. of Daconate6 lbs. MSMA/gal. of Daconate2.5 lbs. of2.5 lbs. of
Daconate/tankDaconate/tank==
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You are trying to control dallisgrass in a bermudagrass You are trying to control dallisgrass in a bermudagrass turf and need to apply MSMA at a rate of 3 lbs. per turf and need to apply MSMA at a rate of 3 lbs. per acre. How much Daconate do you need to add to each acre. How much Daconate do you need to add to each tankful of spray mix? Assume you are using a 200 gal. tankful of spray mix? Assume you are using a 200 gal. Sprayer that applies 40 gals. per acre. (Daconate Sprayer that applies 40 gals. per acre. (Daconate contains 6 lbs. MSMA per gallon).contains 6 lbs. MSMA per gallon).
200 gals. / tank200 gals. / tank
40 gals. / acre40 gals. / acre= 5 acres / tank= 5 acres / tank
5 acres/tank x 3 lbs. MSMA/A = 15 lbs. MSMA/tank5 acres/tank x 3 lbs. MSMA/A = 15 lbs. MSMA/tank
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How much Barricade 65 WG do How much Barricade 65 WG do
you add to a 150 gallon sprayer to you add to a 150 gallon sprayer to
apply 1.5 lbs. product per acre? apply 1.5 lbs. product per acre?
The sprayer was calibrated to apply The sprayer was calibrated to apply
25 gallons water per acre.25 gallons water per acre.
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How much Barricade 65 WG do you add to a How much Barricade 65 WG do you add to a 150 gallon sprayer to apply 1.5 lbs. product per 150 gallon sprayer to apply 1.5 lbs. product per acre? The sprayer was calibrated to apply 25 acre? The sprayer was calibrated to apply 25 gallons water per acre.gallons water per acre.
150 gals. / tank150 gals. / tank
25 gals. / acre25 gals. / acre= 6 acres / tank= 6 acres / tank
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How much Barricade 65 WG do you add to a How much Barricade 65 WG do you add to a 150 gallon sprayer to apply 1.5 lbs. product per 150 gallon sprayer to apply 1.5 lbs. product per acre? The sprayer was calibrated to apply 25 acre? The sprayer was calibrated to apply 25 gallons water per acre.gallons water per acre.
150 gals. / tank150 gals. / tank
25 gals. / acre25 gals. / acre= 6 acres / tank= 6 acres / tank
6 acres/tank x 1.5 lbs. Barricade 65 WG/acre =6 acres/tank x 1.5 lbs. Barricade 65 WG/acre =
9 lbs. Barricade 65 WG/acre9 lbs. Barricade 65 WG/acre
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You have had a severe problem with You have had a severe problem with
crabgrass in the past years and this year you crabgrass in the past years and this year you
decide to treat your fairways (30 acres) with decide to treat your fairways (30 acres) with
the preemergent herbicide, Pre-M 60 DG at a the preemergent herbicide, Pre-M 60 DG at a
rate of 3 lbs. of active ingredient per acre. rate of 3 lbs. of active ingredient per acre.
Your 100 gal. capacity sprayer is calibrated to Your 100 gal. capacity sprayer is calibrated to
put out 25 gpa. How much Pre-M 60 DG do put out 25 gpa. How much Pre-M 60 DG do
you add to each tankful of spray mix?you add to each tankful of spray mix?
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You have had a severe problem with crabgrass in the past You have had a severe problem with crabgrass in the past years and this year you decide to treat your fairways (30 years and this year you decide to treat your fairways (30 acres) with the preemergent herbicide, Pre-M 60 DG at a acres) with the preemergent herbicide, Pre-M 60 DG at a rate of 3 lbs. of active ingredient per acre. Your 100 gal. rate of 3 lbs. of active ingredient per acre. Your 100 gal. capacity sprayer is calibrated to put out 25 gpa. How much capacity sprayer is calibrated to put out 25 gpa. How much Pre-M 60 DG do you add to each tankful of spray mix?Pre-M 60 DG do you add to each tankful of spray mix?
100 gals. / tank100 gals. / tank
25 gals. / acre25 gals. / acre= 4 acres / tank= 4 acres / tank
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You have had a severe problem with crabgrass in the past You have had a severe problem with crabgrass in the past years and this year you decide to treat your fairways (30 years and this year you decide to treat your fairways (30 acres) with the preemergent herbicide, Pre-M 60 DG at a acres) with the preemergent herbicide, Pre-M 60 DG at a rate of 3 lbs. of active ingredient per acre. Your 100 gal. rate of 3 lbs. of active ingredient per acre. Your 100 gal. capacity sprayer is calibrated to put out 25 gpa. How much capacity sprayer is calibrated to put out 25 gpa. How much Pre-M 60 DG do you add to each tankful of spray mix?Pre-M 60 DG do you add to each tankful of spray mix?
100 gals. / tank100 gals. / tank
25 gals. / acre25 gals. / acre= 4 acres / tank= 4 acres / tank
4 acres/tank x 3 lbs. a.i./A = 12 lbs. a.i./tank4 acres/tank x 3 lbs. a.i./A = 12 lbs. a.i./tank
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You have had a severe problem with crabgrass in the past You have had a severe problem with crabgrass in the past years and this year you decide to treat your fairways (30 years and this year you decide to treat your fairways (30 acres) with the preemergent herbicide, Pre-M 60 DG at a acres) with the preemergent herbicide, Pre-M 60 DG at a rate of 3 lbs. of active ingredient per acre. Your 100 gal. rate of 3 lbs. of active ingredient per acre. Your 100 gal. capacity sprayer is calibrated to put out 25 gpa. How much capacity sprayer is calibrated to put out 25 gpa. How much Pre-M 60 DG do you add to each tankful of spray mix?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./tank4 acres/tank x 3 lbs. a.i./A = 12 lbs. a.i./tank
100 gals. / tank100 gals. / tank
25 gals. / acre25 gals. / acre= 4 acres / tank= 4 acres / tank
12 lbs. a.i./tank12 lbs. a.i./tank
0.6 lbs. a.i./1 lb Pre-M 60 DG0.6 lbs. a.i./1 lb Pre-M 60 DG20 lbs. Pre-M20 lbs. Pre-M
60 DG/tank60 DG/tank==