Shindaiwa 80045 Spreader Settings, Rate Setting Conversion, Effective Pattern Width, For example

Spreader Settings

When determining correct spreader settings, consider:

■Effective Pattern Width: The actual width in which the material is applied. Label instructions and settings are useful guides, but only an actual test can provide a reliable and accurate pattern width.

■Application Rate: The amount of material applied per 1000 square feet (before you can determine application rate, you must know the effective pattern width).

Effective Pattern Width

You can make a simple visual pattern test by operating the spreader over a non-turf area and evaluating the pattern.

A more accurate method is to place a row of disposable aluminum cake pans about 1 foot apart on centers as shown in Figure 11. Set the rate control at the middle setting (see Operation, Step 3, Figure 11,) and make three or four passes in the same direction. See Figure 11.

Pour the material collected in each cake pan into individual bottles or jars of the same size, then set them side by side in the order they were collected and inspect the containers.

The Effective Pattern Width is the distance out from the spreader to a point where the amount of material is 1/2 the amount in the center pans.

Application Rate

Calculate application rate as follows:

1.Determine the Effective Pattern Width (see the previous page).

For example:

a. Divide the weight of a container of material by the recommended square-foot coverage.

b. Multiply the result by 100 (add two zeros).

For example:

■According to the label on the container, 25 pounds of material will cover 5000 square feet.

■Calculate average coverage requirement–

25 lbs  5000  000.5  100 

0.5 pounds per 100 square feet

3.Measure out an area of 100 square feet (10 by 10 feet).

Weigh out 15 to 20 pounds of material and spread it over the measured 100 square-foot area, applying in 10-foot swaths (10-foot Effective Pattern Width). Weigh the material remaining in the hopper and adjust the discharge chute as required.

Repeat the test until the application rate is correct.

Space for

wheel track

Direction of

Operation

Rate Setting Conversion

The following is a comparison of the settings of a Shindaiwa 75RS with the equivalent approximate settings of other spreaders.

Shindaiwa
75RS	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Scotts
Speedy Green	-	-	2	-	3	-	4	-	5	-	6	-	7	-	8	-	-
PrizeLAWN
BF-1/CBR III	G	H	J	K	M	N	N1/2	O	P1/2	Q	R	S	T	U	V	X	Z
Lesco
Hi-Wheel	E	F	G	H	I	J	K	L	-	-	M	N	O	-	P	R	S
Scotts
R8A/SR1/AP	I	J	L	M	O	P	-	Q	-	S	T	U	-	V	W	X	Z

	Fertilizer	Bag Rate	Approximate		Spread
		pounds of material used per		Setting	Width
	Particle Size
		1000 sq.ft. of coverage			(feet)
This charts	LARGE,	5		6	12
provides	HEAVY	10		9	12
approximate	PARTICLES	15		11	12
settings of a
	MEDIUM,	5		5	10
Shindaiwa	MIXED	10		7	10
75RS when	PARTICLES	15		9	10
only the	SMALL	1		2	10
product	PARTICLES	2		4	10
weight, area	(NITROGEN)	3		5	10
coverage, or	MIXED-SIZE	5		6	8
inspection of	PARTICLES,	10		9	8
the material	SOME FINES	15		11	8
is available.
	LIGHT	5		4	6
	WEIGHT	10		5	to
	PARTICLES	15		6	8

Effective Pattern Width is deter- mined to be 10 feet.

2.Determine the coverage require- ment of the material to be spread in pounds per 100 square feet. This can be calculated as follows:

Space pans

1 foot on centers

Figure 11

Conversions should only be used as guidelines for establishing rate settings. To obtain the most accurate application rate, follow the procedures described in the Effective Pattern Width and Application Rate sections.

The settings shown here are only approximations and will vary with walking speed, turf condition, humid- ity, etc. Warranties and guarantees of actual coverage or uniformity are neither expressed nor implied.

6 7