Squeeze or Piston Pump for UAN application on Corn Planter - The Combine Forum
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Old 02-04-2012, 11:00 PM   #1 (permalink)
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Join Date: Sep 2010
Location: North Shore Lake Ontario
Posts: 844
Default Squeeze or Piston Pump for UAN application on Corn Planter

What's everybody using on their planter's or drills for their UAN application , Trying to decide which way to go , squeeze pump or a piston / diaphram pump to apply any where from 20 gals to 50 gals / acre of UAN at planting.
I was planning on powering it off the Hydraulic drive on the seed shaft of our White Planter so it will vary with the ground speed.

Originally I was going with a squeeze pump and a Knife following a coulter , but the Yetter rep selling us the coulters highly reccomended going with a pencil tip injector to get away from hairpinning of trash on the knife. But the Squeeze pumps specs show a max of 6 PSI and I do not know if that's enough to shoot the 28% down to the bottom of the coulter trench.
The so called experts are telling us that UAN in a trench that is not closed or covered properly or a Dribbled line has more volatilization of the N into the air compared to a broadcast weed & feed approach that we have been doing in the past when you are applying on bare ground. And the more trash that's there the more N loss we will have with the broadcast application , which is what we are trying to prevent.

Any experiences or opinions would be appreciated.


Last edited by Big Cob; 02-04-2012 at 11:07 PM.
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