accessing the full nutrient value of crop residue
TRANSCRIPT
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Accessing the Full Nutrient Value of Crop Residue
Presented September 16, 2015
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Residue Breakdown & Nutrient Release: Special Considerations Unpredictable fall weather
• Potential to shorten time for mechanical residue management and limit amount of natural residue breakdown
• At colder temperatures (< 50° F), natural breakdown limited, locking up nutrients in residue
Plant genetics • Lots of residue • Bt genetics have higher lignin content – more durable stalks • Can lead to uneven emergence and immobilization of applied
nutrients in the spring
Need… • More efficient way to facilitate nutrient release à biochemical
technology
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Key Questions
We’ll discuss…
What is the value of crop residue?
How can we release nutrients from crop residue for the benefit of next season’s crops?
What is Extract PBA & how does it work?
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What Is the Value of Crop Residue?
Crop residue is… • A good source of organic material for the soil • A renewable natural resource rich in plant essential nutrients Percent of nutrient uptake remaining in residue… Corn (200 bushel) Wheat (80 bushel) • Nitrogen (N) – 33% Nitrogen (N) – 32% • Phosphorus (P) – 40% Phosphorus (P) – 21% • Potassium (K) – 80% Potassium (K) – 78% • Sulfur (S) – 44% Sulfur (S) – 58%
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Introducing
What Is Extract PBA? • New product for residue management and nutrient release • Proprietary formulation of Accomplish LM and Ammonium
Thiosulfate (ATS) Recommended Rates • Applied at 1-2 gal/ac • Recommend at least 1 gal of UAN Value Proposition • High ROI • Easy to apply • Low cost • Sustainable
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Extract PBA Label
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How Extract PBA Works
Two complementary functions…
• Accomplish LM optimizes P&K availability by expediting nutrient cycling of residue through increased breakdown of stalks and stover
• ATS creates a beneficial environment for
microbes essential for residue breakdown and nutrient cycling
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How Extract PBA Works
• ATS provides N and S to enhance soil microbial activity, expediting nutrient availability
• Nitrogen component helps
balance C:N ratio • ATS also lowers the pH on
the residue surface, which increases microbial activity
Material C:N Ratio Rye straw 82:1 Wheat straw 80:1 Oat straw 70:1 Corn stover 57:1 Rye cover crop (anthesis) 37:1 Pea straw 29:1 Rye cover crop (vegetative) 26:1 Mature alfalfa hay 25:1 Ideal microbial diet 24:1 Rotted barnyard manure 20:1 Legume hay 17:1 Beef manure 17:1 Young alfalfa hay 13:1 Hairy vetch cover crop 11:1 Soil microbes (average) 8:1
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How Extract PBA Works
Untreated Residue Treated Residue
N P
K
• Slow process of residue breakdown • Applied nutrients less available for plant
• Rapid residue breakdown, even in cooler temperatures
• Nutrients released and available for the plant to use
Result: “Ugly Corn Syndrome”
N
P K
Result: Stronger, Healthier Plant
N
P K
N P
K
N
P K
Slow, temperature-dependent breakdown
N
P
K
Rapid residue breakdown and nutrient release
N P K
Improved nutrient
mineralization
More nutrients available for plant
uptake during growing season
N N
Immobilization of applied N
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What the Numbers Say The value of nutrients in 1 ton of corn residue
(40 bushels of corn = 1 ton of residue)
Nutrient Lbs/ ton Nutrient Price $/lb Value $/ton*
N 17 $0.60 $10.20
P2O5 4 $0.90 $3.60
K2O 34 $0.40 $13.60
S 3 $0.50 $1.50
Total Value: $28.90
Assume Extract PBA increases residue breakdown/nutrient release by 20% = ~$29.00
*Based on current nutrient values
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Benefits: • Greater residue decomposition increases the ease of
planting the next crop – Decomposition is not always visible and continues even after
planting
• Residue breakdown results in release or Extraction of nutrients from previous crop residue – Approximately 33% nitrogen (N), 40% phosphorus (P) and
80% potassium (K) remains in residue – This helps growers utilize the previous year’s
fertilizer investment
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Increased Residue Breakdown = Operational Advantages!
Agronomic Operational Advantages
Warmer soil temps
Ease of planting
More uniform stand
Faster emergence
Better yield potential
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Breakdown Residue = More Nutrients Released! Hamler, OH Fall broadcast Accomplish LM program with UAN – corn to soybeans
47.7 51.07 50.85 52.79 51.86
60.35
49.84
57.26 57.09 59.19 60.7 56.75
0
10
20
30
40
50
60
70
No Fall Accomplish Fall Accomplish
Check Fall Accomplish LM
ReNforce K (2 apps)
Radiate Awaken + Task Force 2 +
ReNforce K
ReNforce K + N Pact
ReNforce K + N Pact +
Aftershock
Accomplish LM applied at 2 qts/ac; ReNforce K applied at 1 gal/ac; Radiate applied at 2 oz/ac; Awaken applied at 2 qts/ac; N Pact applied at 1 gal/ac; Aftershock applied at 2 oz/ac
Bu/ac
LM
4.37 bu/a avg increase
Biochemical technology in Extract PBA
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Accomplish LM – Increased Yield and Nitrogen Use Efficiency
Corn on Corn – Northeast IA (2010) Accomplish LM spring applied at 1.5 qts/ac in late March
209.2 209.6
216.4 217.2 218.3
221.0
200
204
208
212
216
220
224
GSP* Urea MESZ 28% UAN AMS Accomplish
*Grower Standard Practice – 200 units of N as fall applied NH3 Nitrogen Use Efficiency (NUE) = lb N applied/bu yield
Yield Results Bu/ac
0.96 1.14
1.11 1.10 1.10 0.90
$25 $137 $25 $38 $12
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The Second Year of the Study Demonstrated Similar Results
Corn on Corn – Northeast IA (2011) Accomplish LM spring applied at 1.5 qts/ac in late March
240.0 243.0
246.0
234.0
239.0
255.0
220
224
228
232
236
240
244
248
252
256
260
GSP* Urea MESZ 28% UAN AMS Accomplish
*Grower Standard Practice – 200 units of N as fall applied NH3 Nitrogen Use Efficiency (NUE) = lb N applied/bu yield
Yield Results Bu/ac
0.83 1.03 0.97 1.03 1.01 0.78
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Increased Soil P with Accomplish LM
Corn on Corn – Northeast IA (2011) Accomplish LM spring applied at 1.5 qts/ac in late March
2011 5 Location Field Trials Northeast Iowa
Location Check P2 Check P1 Accomplish LM P2 Accomplish LM P1
Garnavillo 51 37 76 47
Lamont 172 108 195 124
Nora Springs 82 54 89 64
Ossian 40 31 48 35
Waverly 214 124 325 150
Average 112 71 147 84
P1 18% greater
P2 31% greater
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Extract PBA Applications Labeled for residue management • Corn going to soybeans (compatible with
fall herbicide applications) • Wheat going to soybeans • Wheat to wheat acres • No-till/minimum till corn on corn acres
Also labeled for pre-emergence applications • Spring broadcast fertilizer applications • Corn and soybean pre-emerge herbicide applications
– Matador – Intimidator – Many others
DO NOT use in-furrow or 2x2 • Crop germination/seedling injury highly likely
to occur if used through the planter
ATS salt index is 90.4, compared to 10-34-0 at 20.0
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Summary
• Valuable nutrients for next season’s crops are locked in this year’s crop residues
• Residue application of Extract PBA accelerates and improves residue breakdown, nutrient release and nutrient mineralization – Not temperature sensitive – addresses nutrient release
challenges after late harvest – Effective across variety of tillage practices, even in
high-residue fields – Pays for itself with exceptional ROI for the grower
• Extract PBA is a product to address residue and should not be used in furrow or 2x2
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Actions to Take Now
Focus on fall applications • Corn to soybean, wheat on wheat,
corn on corn • Remember to combine with
herbicide applications
Product info • Pack sizes: bulk, 275 gallon totes
and 2x2.5s (limited volume here)
Let’s Get Growing!
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