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Author Question: Describe how you would measure the distribution patterns of a rotary spreader? What will be an ... (Read 15 times)

KimWrice

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on: Jul 22, 2018
Describe how you would measure the distribution patterns of a rotary spreader?
 
  What will be an ideal response?

Question 2

When calibrating granular applicators, why should you use at least 5,000 sq. ft. for a rotary spreader and only 1,000 sq. ft. for a drop spreader?
 
  What will be an ideal response?


djofnc

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Reply #1 on: Jul 22, 2018
Answer to Question 1

Place a series of ft. sq. pans spaced across 1 1/2 to 2 times the anticipated swath width. Catch the granules from three passes in the same direction. The material caught in the pans is then weighed or poured into bottles and a distribution patterns is plotted to determine the effective swath width.

Answer to Question 2

With a drop type spreader the spray width is uniform and walking speed and wind are not factors. For rotary spreaders you need to check the distribution patterns and flow rate and the effective swath width varies with the wind and tapers as the margins.


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