A simple visual pattern test can be made
by operating the spreader over a non-turf
area and evaluating the pattern. A more
accurate method is to place a row of
common, disposable, aluminum cake
pans approximately 1 foot on centers.
Set the rate cam at a middle setting and
make 3 or 4 passes in the same direction
as shown. Pour the material collected
from each pan into individual bottles of
the same size. Set them side by side in
order, and visually inspect their volume.
The effective pattern width is the
distance out from the spreader to a point
where the amount of material is 1/2 the
average amount in the center pans. This
distance is multiplied by 2 to achieve the
total effective pattern width.
Knowing the effective pattern width (for example, 10
feet), measure a distance equal to 100 square feet
(10’ x 10’ swath width). Determine the product
coverage is pounds/ 100 sq. ft. by the recommended
square foot coverage (add two zeroes to the weight
of the bag).
EXAMPLE: Product weight: 25 lbs.
sq. ft. coverage: 5,000 sq. ft.
2500 lbs. - 5,000 sq. ft.
= .5 lbs. / 100 sq. ft.
Weigh out between 15 to 20 lbs. of material
and spread over the 100 sq. ft. area. Weigh
remaining material left in hopper and adjust
rate setting as required. Repeat test until
application rate is correct.
Two major factors should be considered when determining correct spreader settings of any
product:
1. The product application rate, or the amount of material applied per 1,000 square feet.
2. The effective pattern width, or the actual width in which material is applied. Label settings are a
guide and can be affected by numerous factors.
EFFECTIVE PATTERN WIDTH
EFFECTIVE PATTERN WIDTH
EFFECTIVE PATTERN WIDTH
EFFECTIVE PATTERN WIDTH
APPLICATION RATE
APPLICATION RATE
APPLICATION RATE
APPLICATION RATE
5
HOW TO DETERMINE SPREADER
HOW TO DETERMINE SPREADER
HOW TO DETERMINE SPREADER
HOW TO DETERMINE SPREADER
SETTINGS AND SPREAD WIDTH
SETTINGS AND SPREAD WIDTH
SETTINGS AND SPREAD WIDTH
SETTINGS AND SPREAD WIDTH
