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Random quote: When men exercise their reason coolly and freely on a variety of distinct questions, they inevitably fall into different opinions on some of them. When they are governed by a common passion, their opinions, if they are to be called, will be the same. ~ Alexander Hamilton
- (Added by: W Guenther NeNE)


N app: coulter or stream
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dlc
Posted 3/10/2010 9:19 AM (#3291)
Subject: N app: coulter or stream


New User

Posts: 2
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We usually run a coulter machine rented from fert dealer and are happy with the results. Are worried about being able to use machine in a timely manner before corn planting this spring. The question is: Is streaming on 28% on 20" centers equal to using a liquid coulter machine? Are they close enough to plan on streaming N every year? Do we make the investment in a coulter sidedress machine? This will be the only N applied, no fert on planter.

Thanks for any opinions
DLC neks
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dmengel
Posted 3/10/2010 9:29 PM (#3292 - in reply to #3291)
Subject: RE: N app: coulter or stream


Regular

Posts: 51
2525
Dear DLC,

There is a lot of data around from all over the country to answer that question. To give you some brief ideas I'll site some of our work at Manhattan and Barney Gordons at Scandia. Gordon/Scandia, average of 5 years, Broadcast UAN 168 bu/acre; Surface band, 176 bu/acre; knifed in, 188. Mengel/Manhattan 2008 and 2009 average, broadcast UAN 132; surface band 142; coulter band 157. Ray Lamond had similar data with grain sorghum in the 90's at Manhattan.

These results are similar to what I obtained in Indiana in the 80's and 90's and what a number of other researchers have found over the years. Generally the more residue, higher soil pH, the bigger these differences will be. Will you always see thes kind of differences? No. Some years there will be very little difference, especially if you are fortunate enough to get 0.5 to 0.75 inches of rain immediately after surface banding to "incorporate" the fertilizer. But the data is pretty consistant. Coulter banding pays.

Dave Mengel,
KSU Agronomy
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dlc
Posted 3/11/2010 8:39 AM (#3293 - in reply to #3292)
Subject: Re: N app: coulter or stream


New User

Posts: 2
0
Thanks, good information.
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brad c
Posted 3/11/2010 3:38 PM (#3294 - in reply to #3293)
Subject: Re: N app: coulter or stream


Veteran

Posts: 121
100
I don't have the scientific research data that Dave has but i would say my experiences are close to those research results. We have moved from broadcasted urea or ammonium nitrate to streamed-banded to coulter applied and we prefer the in-soil application by far.
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