Comparison of Exactrix and Conventional Fertilizer Application in Corn -
Brent Bean, Mark McFarland, Tony Provin, Bob Villarreal, Olan Moore
Brent Bean who carried out this plot did not use primary nitrogen (82) for
He should have used a pressure reducing NH3
system….with freezing lines and gas and liquid state flow of NH3 at the
Brent Bean did not compare the process….He compared two different
Comparing two different chemicals means he must compare the two
Since the difference is $60 to $75 per acre in favor of Exactrix TAPPS.
on 32 and 82…..from Simplot. Click on images below to read the PDF
Crystalline TAPPS at Groom, Texas,
Jan. 20, 2008 Cotton field
The plot was set up to indicate that Exactrix does
not increase yields….the goal was to not compare the process or Exactrix
Brent Bean’s goal was to prove you can could raise higher yields with
32-0-0 as he writes in his summary.
The Secondary nitrogen source 32-0-0…is Salvage and Convenience fertilizer
that normally costs about 150% more than NH3.
The advantage of 32-0-0…is liquid streaming flow….and mixing of the two
Also 32-0-0 has more carbon in the band….so it is not a primary nitrogen
So if he had done the plot correctly there would also be Humic Acid
with the NH3 to reflect the same amount of carbon. Over 50% of the N
had Carbon stored in the Urea and this is why the material weighs more.
Approximately $9.00 of Humic Acid at 1.5 gallon would be required.
Timing was leveraged to 32-0-0….The banding plot should have been
carried out in March rather than late April. This would be
representative of how NH3 is applied at Amarillo.
If he had tested with Aqua Ammonia with a liquid streaming flow….then
he would have had a better comparison of how Exactrix NH3 works.
Liquid Streaming Flow at the injection is the powerful combination at high
pH in an Acid Base Reaction with APP/ATS/KTS. The band width remains
constant with liquid streaming flow.
Long Ago….Discovered and Promoted by the TVA at Muscle Shoals….Liquid
Fertilizers are more crop effective.
In the extensive test plots
Exactrix produced 8 more bushels over 2 years.
The economic difference in this extensive plot is. The 32-0-0
treatment would need to produce 5 more bushels of corn per acre annually to break
Risk was increased with 32-0-0….And for the Risk involved with the
32-0-0 should have produced 7 more bushels per acre annually to get a 2:1 return on
32-0-0…45 to 65 gallons per acre required a lot more handling and slows
the application process down. NH3 was applied at 28 gallons to 50 gallons
11.01 pounds per gallon….allows 1,000 gallons of 32-0-0 on board. NH3
typically has 2,000 gallons at 5.14 pounds on board with fills to 95% with
37 pounds N came from APP/ATS. 123 pounds N comes from 32-0-0 or NH3 at
160 total pounds N per acre.
Current prices for Corn and Nutrients based on Dec.
10, 11 at Hugoton, KS Coop. Elkhart.
42 cent N as NH3
68 cent N as URAN or 32-0-0.
Best Results were at 160 pounds N.
That is 26 cent difference in N times 123 pounds. That is $31.98 per acre
annually or $63.96 over the 2 year period.
The Yield advantage over 2 years was 8 bu. per acre. Or at $7.00 per
Over the 2 year period….the advantage was $119.96 or about $60.00 per acre
The further investigation of the plot….resulted in
these facts following interviews with the producers.
1. The plots were paid for by the solution 32-0-0 fertilizer dealer
in the area.
2. The Exactrix owner in the plot, Matt Galbreath is not changing a
thing. He is a happy producer with the Exactrix.
3. The second year the corn was planted on top of the TAPPS bands
within 19 days….and the waiting period is 30 days for mellowing the bands.
Burning occurred as indicated but
4. The optimum rate of N is known to be less….somewhere between 120
and 140 pounds N per acre in TAPPS formulation…any higher and yield curve
5. Strange Event…The Yield Curve did not go back ward above 160
pounds N….The yield curve is still climbing at 240 pounds N…Exactrix
curve drops off after 160 pounds N.
6. Typically the plots are set at 80, 100, 120, 140, 160 and 200
pounds N….Current plot designs do not go above 200 pounds N. The sweet
spot is known to
be between 120 and 140 pounds N.
Proven Yield method is not used with Exactrix. The Economic
method is used at 12% of the gross.
Normally 70% to 80% of the corn root mass is in the top 18 inches of the
soil profile. Avoiding abnormal N in the lower part of the soil profile is
a federal and state goal.
Orthman strip-till, 30 inch, Groom, TX. Jan 20, 2008
Case SDX, Single disc applicator, no-till.
Pre-plant corn production, Panhandle, TX.
Most of the 30 inch strip till banding at Amarillo is
done all winter long….and finishes about March 15, 11. The Planting
typically starts April 22.
Solution 32-0-0 is not used because of all the hauling, the fact that it
can easily leach if applied too early, and it costs too much. It is not
Banding is always superior and band centers are best at
10 to 15 inch for TAPPS. 32-0-0 will easily leach if banded on 10 or 15
Solution 32-0-0 is not a primary nitrogen source.
Leaching occurs with 32-0-0 if it is banded ahead….during the winter.
Higher Yields are possible.
The most likely scenario for getting higher yields
was the 30 inch band centers creating root burn.
The highest yields and best economics typically come at 140 pounds N in
TAPPS formulation on 30 inch band spacing…the curve is shifting typically
downward at 160 pounds N.
Humic Acid can be used in the band to provide more carbon and improve the
Cation Exchange Capacity.
Some producers at Amarillo band NH3 with Single Disc Openers on 15 inch
centers at half rates…..and then strip till band at ½ rates to produce a
warmer seed bed later in the season which does avoid a concentrated 30
inch band. Highest yields are always attained with 15 inch or less band
The highest yields achieved at Amarillo are in the 300 plus bushel
range….Donny Carpenter, Exactrix owner. Winner of the National Corn Yield
Exactrix does produce higher yields with TAPPS and
TAPPKTS…..when properly compared…..and always Exactrix TAPPS, TAPPKTS, and
Humic Acid does produce more net dollars….In this case $60 to $75 more net
income per acre. Exactrix owners have less risk in the growing crop
because of good old NH3 and Super Phosphoric Acid. ….stabilized with ATS….and
also now with Humic Acid.
Agronomy Guide explains how Exactrix Works.
In late 2007 and early 2008 in Western Kansas and the
Texas Pan Handle, about 50 irrigated corn producers on large acreages
converted to Exactrix.
The fertilizer dealers that offered solution 32-0-0 and inventoried the
material began a strong program to convert Exactrix owners back to 32-0-0
to be applied with the Pivot.
Their science did not measure up. ….since these large producers made
$100,000 to $250,000 investments in Exactrix that were bringing between
$500,000 to $1.5 million more net.
A very small group of producers strip till with 32-0-0. Small producers
may use 32-0-0 due to a larger investment required to apply NH3.
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