OPERATION
TOWING VEHICLE REQUIREMENTS
The lawn sprayer requires towing equipment with a
The towing equipment should have operable brakes capable of controlling the loaded sprayer and towing vehicle.
CALIBRATION OF SPEED
By measuring off a distance of 50 or 100 feet, the speed of the tow- ing vehicle can be calibrated by selecting a gear and throttle posi- tion to cover the prescribed distance in the specified time as shown:
Speed (mph) | Seconds required to travel | |
| 50 feet | 100 Feet |
2 | 17 | 34 |
3 | 11 | 22 |
4 | 9 | 17 |
5 | 7 | 14 |
CALCULATION PROCEDURE FOR SPRAYER APPLICATION
Chemical labels normally show application rates in gallons per acre or gallons per square feet. Using the following method, one can determine the appropriate amount of water to use and speed to travel to adequately follow the manufactures recommended instructions.
1.Based on the size of your yard, select the amount of water to be used. Use the formula:
Application Rate x | Area to be sprayed = Amount of water |
(from the Table1). |
|
Example 1 | Example 2 |
Yard Size= 4 acresYard Size= 20,000 sf
Using the Table 1 and the above formula:
56.5 gal/ acre x 4acres= 225.6 gal@ 2mph | 1.3 gal/ 1000 x 20,000sf= 26 gal@ 2mph |
37.5 gal/ acre x 4acres= 149.6 gal@ 3mph | 0.9 gal/ 1000 x 20,000sf= 18 gal@ 3mph |
28.0 gal/ acre x 4acres= 112.0 gal@ 4mph | 0.6 gal/ 1000 x 20,000sf= 12 gal@ 4mph |
22.5 gal/ acre x 4acres= 90.00 gal@ 5mph | 0.5 gal/ 1000 x 20,000sf= 10 gal@ 5mph |
2.Choose the speed / amount of water you want to use.
Example 1 | Example 2 |
A comfortable speed | Since 18 gallons can be |
for a lawn tractor is | done with only one filling: |
3 mph. |
|
Choice = 149.6 ~ 150 gal@ 3mph | Choice = 18 gallons @ 3mph |
3.Determine how many tanks are required to complete the total job:
Amount of Water / Tank Capacity = Number of tanks from Step 1.
If the number of tanks is less than 1.0 use 1.0
Example 1 | Example 2 |
150 gal/ 25 = 6.0 tanks | 18 gal/ 25 = 0.7 tanks use 1.0 tank |
4.Determine how much chemical is to be used:
Rate From | Area to be | Amount of |
Manufacturer’s Label X | Sprayed | = Chemical Required |
Example 1 | Example 2 |
Label = 20 ounces/acre | Label = 1/2 pint/ 1000 sq. ft. |
20 oz. x 4 acres = 80 oz. | 1/2pt/1000 x 20,000 sf = 10 pints |
5.Determine how much chemical per tank:
Amount of Chem | # of Tanks | Amount of |
(from Step 4.) | (from Step 3.) | Chemical per tank |
Example 1 | Example 2 |
80oz./ 6.0 tanks = 13.3 oz./tank | 10 pints/ 1 tank = 10 pints |