What is the best guess regarding N price

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What is the best guess regarding N price??
US Natural gas price is expected to remain above
historical price, and winter weather will be a
factor for spring anhydrous supply
Foreign urea production is projected to increase
grain farmers should compare sources anhydrous
may not be the cheapest
Practice sound agronomic crop management to get
the most out of their fertilizer dollar
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Nitrogen Use Efficiency
The amount of applied N that is taken up by the
crop
Usually calculated by subtracting N uptake in the
control (0 lb N/a) from N uptake in fertilized
plots
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Nitrogen Use Efficiency
Worldwide, nitrogen use efficiency (NUE) for
cereal production (wheat, corn, rice, barley,
sorghum, millet, oats, and rye) is approximately
33. (Raun and Johnson, 1999)
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Best way to increase nitrogen use efficiency?
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Nitrogen Recommendation for Corn
1. Corn, Sorghum, Soybean, Small grain,
set-aside 2. Grass, Grass-legume sod (4yrs or
less) w.a. leg. 3. Grass, grass-legume sod
(5yrs or more)
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No-till Corn Response to Nitrogen
(1992-1994) Lexington
Previous Crop
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Corn Yield Response to Fertilizer
Nitrogen Kentucky 2001-2003 Well Drained Soils

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Henderson County 2001 P. Crop Soybean Soil Series
Fayala
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Henderson County 2001 P. Crop Soybean Soil Series
Fayala
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Economically Optimum Nitrogen Rate Kentucky
Studies 2001-2003
Average 0.72
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Nitrogen Effects on Corn Yield for Well Drained
No-till Soils 2003-2005
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Nitrogen Effects on Corn Yield and Return to N
for Well Drained No-till Soils 2003-2005
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Nitrogen Effects on Corn Yield and Return to N
for Well Drained No-till Soils 2003-2005
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Yield and Economic Return to Nitrogen for Corn on
Well Drained No-till Soils 2003-2005
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Yield and Economic Return to Nitrogen for Corn on
Well Drained No-till Soils 2003-2005
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Yield and Economic Return to Pre-plant Nitrogen
for Corn on Somewhat Drained No-till Soils
2003-2005
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Yield and Economic Return to Sidedress Nitrogen
for Corn on Somewhat Poorly Drained No-till
Soils 2003-2005
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Conclusions
As N price increase, the cost of over
fertilization increases
Increase N price may justify switching sources or
application methods
Take steps to improve NUE when feasible 1.
Utilize manure if possible 2. Make timely N
application 3. Encourage farmer conducted strip
trials
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Polymer Coated Urea
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PCU on Corn in KY
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Wheat yield for 2002-03 as affected by N source
and application timing.
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Wheat Yield response to nitrogen source and
application time at Murray and Princeton 2003-04
growing season.
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Questions/Comments