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Dealer Experience in Nitrogen Sensing Danny Peeper Wheeler Brothers Grain.
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Transcript of Dealer Experience in Nitrogen Sensing Danny Peeper Wheeler Brothers Grain.
Dealer Experience inNitrogen Sensing
Danny Peeper
Wheeler Brothers Grain
Peace of Mind
• Fertilizer cost….$.60 per # N
• Wheat market…..$9 bushel
• Knowing you spent the right amount on topdress fertilizer……….priceless
N Rich Defined
• Strip– An area of the field exposed to a “non-limiting”
nitrogen rate
• Ramp– An area of the field with various
demonstration rates of nitrogen and includes a “non-limiting” rate
Why is the Technology Needed
• Fixed costs are increasing• Variable costs are increasing• Follow the trend
– Increased Production– Increased Efficiency
• Nitrogen difficiency is a major factor of yield• Some years don’t require nitrogen• Every field is different• Topdress Rates are hard to decide
Current Practices
• 30-40# N at planting
• Removal from grazing
• 30-40# N at topdress– Normally applied to late– Incorporation before FHS
• Very little change from field to field
Enhanced Practices
• 30-40# N at planting
• Removal from grazing
• N rate recommendation in late winter for each field
• Topdress applied Jan-Fed
How Do We Make It Work
• Apply thousands of Ramps– Dealers – Producers– Consultants
• Dedicate time for Sensing/Visual interpretations
• Be willing to apply different rates for producers
Can It Be Done
• 3 years of N Rich Strip use
• 500-800 plots annually– 1 machine
• Added service– Customer loyalty
• Added efficiency
• We don’t make money unless you make money
Our Equipment
• Modified Ramp/Strip• Portable• Storage• Visual
How Does the Program Work
• We apply a ramp in your field during the fall
• Treat it just like the rest of the field
• Visual determination can be made in spring
• Sensor determination can also be made
• Grazing?
How Much is Enough?
• The traditional Approach (Blanket Rate)– I normally put out x amount in the spring– Independent of field history and yield potential– May be spending more than needed– Profit potential is usually found in the last 5-10
bushel of production
Soil Test Method for N
• Accurate only if your Yield Goal is the same as Final Production and no environmental N
• Recommendatons will change very little from year to year
• Provides for efficiency about 5% of the time
• 2#/Bushel Rule
Fertilizer N requirement (total yield/N rate) for maximum wheat yield (trial 502).
2.7
0.0
1.6
2.1
2.7
0.4
2.6
0.60.8
2.2
1.2 1.2
3.4
2.2 2.2
2.6
1.3
2.1
0.8 0.91.31.3
1.91.7
1.2
1.91.81.91.81.91.91.8
y = 1.33E-02x + 1.49E+00 Ave = 1.7; C.V. = 39
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
Year
N R
equi
rem
ent (
lb/b
u)
Fertilizer N requirement (total yield/N rate) for maximum wheat yield (trial 502).
2.7
0.0
1.6
2.1
2.7
0.4
2.6
0.60.8
2.2
1.2 1.2
3.4
2.2 2.2
2.6
1.3
2.1
0.8 0.91.31.3
1.91.7
1.2
1.91.81.91.81.91.91.8
y = 1.33E-02x + 1.49E+00 Ave = 1.7; C.V. = 39
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
Year
N R
equi
rem
ent (
lb/b
u)Does the 2# Rule Still Apply?
Ramp or N Rich Strip
• Visually with Ramp • Use of Sensor with
Ramp or Strip• Accurate every year• Changes sometimes
greatly from year to year and field to field
• Efficient• Long term usage
Concerns
• How big of ramp do you need
• How do you go back and find it
• What if you can’t see any difference
• Are we representing accurately the field variability
• When do I have to put one out
Bottom Line
• Current Fertilizer Prices High
• Current Wheat Prices High
• We need to produce a lot of wheat efficiently
55-20-16
32-0-25
25-20-1045-16-12
55-20-16
32-0-25
25-20-1045-16-12
35-0-0
45-0-0
27-0-052-0-0
57% Over
29% Under
66% Over 62% Under
Blanket 40#N
Success Stories
• Early years of strip use
• Following year response
• Current shift away from blanket rate applications
• Better fertility management practices enhances other decisions
Summary
• How can we recommend an accurate N rate visually with no reference– Adds Credibility
• Producers need a correct rate by field by year– Averages have shown $10+ profit gains
Questions?