SCAC STS60-23BV - Adding Spray Mixture

35
R
Section 5
9. Once you have a desired application rate, mark a
test path of 50 or 100 feet (a shorter test course can
be used, but may be less accurate). Make sure the
machine operates at a spreading speed. Drive the
test path and record the number of seconds it takes
to do the path. Repeat the test path three times and
calculate the average time it takes (add all three
times together and divide by 3 to get the average).
- NOTE -
Give the machine plenty of room to get to the test
path, the machine should be at a speed that you
would spread at while driving through the test path.
10. To determine the amount of material to be applied
during a test path pass use the formula in Figure
5-12.
1000 ft²
Desired Application Rate (lbs/1000 ft²) x (Eective Spread Width (ft) x Course Length (ft))
=
Amount During Testing (lbs)
Figure 5-12. Amount That Should Be Applied During
Test Path Formula
11. Fill the spreader with the correct weight(lbs),
determined using the formula in Figure 5-12.
12. Make sure the gate setting is still set to the
recommended base setting, refer to the chart in
Section 5.10. (this is a base setting and may need to
be adjusted based on speed, product, and moisture)
- NOTE -
Make sure the test area is an area that you wouldn't
mind having streaking or burning from the fertilizer,
OR use a paved surface and collect all of the
material after, to avoid possibility of turf damage
from run off.
13. With the gate setting set and the spreader at
operating speed, open the hopper door and allow
the spreader to spread for the average test course
time (a drop cloth can be used to deflect and catch
the material for easier clean up). The hopper should
empty as time expires. If it does not empty, the gate
setting will need to be adjusted to increase the flow.
If it empties too early, the gate setting will need to be
adjusted to decrease the flow. Repeat until proper
calibration/gate setting is reached.
Useful Conversions
1 lbs/1000ft² = 43.56 lbs/Acre
1 lbs/Acre = 0.0229568411 lbs/1000ft²
5.9 ADDING SPRAY MIXTURE
1. Fill each tank 1/2 to 3/4 full with clean water, before
adding any chemical
2. To determine the amount of chemical to add to each
sprayer tank when the application rate is given in
weight per acre, follow the formula in Figure 5-13
(If the entire tank is going to be filled after adding
the chemical, use the total tank volume (gal) for
determining the amount to add).
Gallons of Water In Tank
or
Total Tank Volume (gals)
Spray Rate (Gal/Acre)
= Chemical to AddChemical Application Rate (per acre)
x
Figure 5-13. Amount To Add
3. To determine the amount of chemical to add to the
sprayer tanks when the application rate is given in
pounds of active ingredient per acre, with a material
containing a percentage of active ingredient. Follow
the formula in Figure 5-14 (If the entire tank is going
to be filled after adding the chemical, use the total
tank volume (gal) for determining the amount to
add).
Percentage of Active Ingredient in Material)
Gallons of Water In Tank
or
Total Tank Volume (gal)
Spray Rate (Gal/Acre)
= Chemical to Add(Chemical Application Rate (per acre)x/
Figure 5-14. Amount To Add Active Ingredient
4. When adding more than one chemical, follow the
W.A.L.E.S acronym for adding chemicals.
Liquid Product
Wettable Powders
SurfactantsSS
E
L
A
W
Emmulsiable Concentrates
Agitate Tank
-
-
-
-
-
Figure 5-15. Acronym For Adding Chemicals
5. Once the chemicals are added, if needed, fill the
tank the rest of the way.