Lonoke County
 Agriculture
Podcast
February 5, 2008
Spring Nitrogen Applications in Wheat (1:19 minutes)
Audio/Video Script:
Susan Scott
County Extension Agent - Agriculture
Spring is just around the corner and we need to begin topdressing wheat with
nitrogen.
This is Susan Scott County Extension Agent with the University of Arkansas,
Division of Agriculture.
Apply spring nitrogen in two applications with the first application in early
to Mid-February and the second application 3 to 4 weeks later.
The addition of 50 to 100 lbs of ammonium sulfate with the first nitrogen
application should be sufficient to correct any sulfur problems. Soil test
levels below 20 lbs/acre sulfate-sulfur and a previous history of sulfur
deficiency will likely require supplemental sulfur.
Most fields with loamy soils and a good yield potential following all crops
except rice should receive 110-120 lbs nitrogen per acre. More spring nitrogen
is generally going to be needed following rice for optimum yields.
A typical fertilization program may be as follows where 120 lbs of spring
nitrogen is being applied and the field has a previous history of sulfur
deficiency:
February 5th - 20th: Apply 120 lbs/ac of Urea + 75 lbs/ac Ammonium sulfate
March 1st - 15th: Apply 110 lbs/ac of Urea
For more information contact the Lonoke County Extension Office at
501-676-3124.
| Soil Type |
Following Rice |
All Other Crops |
|
Lbs Spring Nitrogen/Acre |
| Sandy Loam |
90-100 |
90 |
| Sandy Loam,>70Bu/a
Yield Potential |
110-130 |
110-120 |
| Silt Loam, Silty Clay
Loam, Clay Loam |
100-110 |
90
|
| Silt Loam, Silty Clay
Loam, Clay Loam>70 bu/a Yield Potential |
120-140
|
110-120
|
| Clay |
140-150 |
140 |
Clay>70bu/a Yield
Potential |
160-180 |
160-170 |
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