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ReducingCornProduc.onCostsWebinarFebruary1,2016
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ReducingCornProduc.onCostsWebinarFebruary1,2016
ReducingCornProduc.onCostsWebinar,February1,2016
35.0%
19.3%15.6%
11.7%
5.6%12.7%
CostSharesforCorninWestCentralIndiana,2015
Land Fer?lizer Seed Machinery Labor Other
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ReducingCornProduc.onCostsWebinarFebruary1,2016
ReducingCornProduc.onCostsWebinar,February1,2016
Rota?onCorn;CostsperBushelin2015and2016Budgets
Item 2015 2016 PercentChange
Fer?lizer $0.89 $0.70 -20%
DryerandMachineryFuel $0.30 $0.21 -30%
TotalVariableCost $2.70 $2.42 -10%
TotalCost $4.98 $4.57 -8%
CornPrice $3.80 $3.50 -8%
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15 3040
SoiltestP(ppm)assoc.withlimitsforcornandsoybean
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Maximizeprofitthisyear• About50lbnutrient/acre
shouldmaximizeprofitatupperendofLOW
• and100lbnutrient/acreatlowerendofLOW
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Nitrogenraterec.• Recs.applytoefficient.mingsandplacementofN
• NLossRisksarehigherif:– Fallorearlyspringanhydrous– EarlyspringliquidN– Surface-appliedurea
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©PurdueUniv
0
50
100
150
200
250
0 50 100 150 200 250 300
Grainyield(b
u/ac)
TotalappliedNfer?lizer(lbsN/ac)
YieldresponsetoNisnotlinear
Yieldrespo
nsetoN
decreasesa
sNrate
nearstheo
p.mum
YieldresponsetoNstopsbeyondtheop.mumNrate
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Economicop?mumNrate• MostprofitableNrateover.me,noteverysingleyear
• Opt.Nratesinanysitua.oncanvaryplusorminus30to40lbN/acre
• Recs.arebasedoncornaYersoybeantrials(add40-50lbN/acremoreforcornaYercorn)
• Varieswithpriceoffer.lizerandgrain
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158
166
171
191
201188
$4corn$330/tUAN-28%or$970/tAA
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Economicrec’sforcorn/soybeaninWC/SWIndiana
+40-50forC/C
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hep://www.agry.purdue.edu/ext/corn/news/.meless/NitrogenMgmt.html
Nitrogenguidelines
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ReducingCornProduc.onCostsWebinarFebruary1,2016
ReducingCornProduc.onCostsWebinar,February1,2016
Transgenicsornot?
• Seedcostscanbereducedbyusinglessexpensivehybridsthatdonotcontaintransgenictraits(akanon-GMOhybrids).– Upwardsof$100savingsper80kunit.– At34,000seedsperacre,translatestoseedcostsavingsupwardsof$43/acre.
©PurdueUniv
13
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ReducingCornProduc.onCostsWebinarFebruary1,2016
ReducingCornProduc.onCostsWebinar,February1,2016
Hybridselec?onisnotsimplyaboutgene?cyieldpoten?al• But,alsotheabilityofhybridstoperformconsistentlywell
acrossawiderangeofgrowingcondi.ons(i.e.,stresstolerance).
• Tolerancetoawidearrayofstressesisimportantbecausewecannotaccuratelyforecastnextyear’sgrowingcondi.ons.
©PurdueUniv
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ReducingCornProduc.onCostsWebinarFebruary1,2016
ReducingCornProduc.onCostsWebinar,February1,2016
MostEffec?veIndicatorofHybridStressTolerance:• Hybridperformanceinasmanyvarietytrialsasyoucanfind
withinagivengeographicregion.
• Mul.pletrialshopefullyprovidearangeofgrowingcondi.onsthatyourfieldsmayexperienceinthefuture.
• Lookforhybridsthatconsistentlyyieldnearthetopofthemajorityofthetrials.
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+/-1bu/ac
+/-2bu/ac
0
50
100
150
200
250
18000 23000 28000 33000 38000 43000
Grainyield(b
u/ac)
Plantpopula?on(plants/ac)
YieldResponsetoPopula?on
PurdueSeedingRateTrials,2008-2014
Whiletheagronomicop.mumplantpopula.onistechnically32kplantsperacre,theyieldresponsecurveissoflatthatfinalstandsanywherebetween~29kand~35kwillyieldclosetoop.mum.
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ReducingCornProduc.onCostsWebinarFebruary1,2016
ReducingCornProduc.onCostsWebinar,February1,2016
Bocomlineonplantpopula?on• Ourresearch:Two“sweetspots”forplantpopula.onforcorn
inIndiana.
– Produc.vesoils:Low30’sFINALstand– Challengingsoils:Mid20’sFINALstand
• Ourresearch:VariableratesnotwidelybeneficialformostfieldsinIndiana.
• Economicratesareatleastseveralthousandlessthanagronomicrates.
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Onlinesummary…www.kingcorn.org/news/?meless/SeedingRateGuidelines.pdf