优化冬小麦氮肥施用量和时间.pdf

1、Optimizing Nitrogen Fertility Rates and Timings in Winter WheatFeb 25,2025Cell:(204)441-4360Email:A_Griffithsducks.caAlex Griffiths P.Ag,CCA Great nesting habitat Nesting April&May Most fields not yet seededWhy Does DUC Care About Winter Wheat?Baldur,June 7,202224X MORE PRODUCTIVE FOR WATERFOWLMORE

2、NESTS&BETTER HATCHING SUCCESSIMPACT1 QUARTER OF WINTER WHEAT PRODUCES AS MANYDUCKS AS 4,000 ACRES OF SPRING WHEATNorthern PintailTrial LocationsRoblinMelitaCarberryArborgWinnipegManitobas Diversification Centres Factorial Randomized Complete Block Design Melita,Roblin,Carberry,Arborg(2022-2024)11 si

3、te years of data Fall N 50:50 ESN:Urea mid-row banded Spring N broadcast urea with agrotain Varieties:Wildfire and VortexMaterials&MethodsPhoto:Laura SchmidtTreatments:1.Check No fertility except starter phosphorus2.Split 60 Kg/ha(54 lbs/ac)nitrogen,split 50:50 Fall/Spring app3.Split 90 Kg/ha(80 lbs

4、/ac)nitrogen,split 50:50 4.Split 120 Kg/ha(107 lbs/ac)nitrogen,split 50:50 5.Split 150 Kg/ha(134 lbs/ac)nitrogen,split 50:50 6.Split 180 Kg/ha(161 lbs/ac)nitrogen,split 50:50 7.Spring 120 Kg/ha(107 lbs/ac)nitrogen,100%spring appliedSpring Apps Can Be ChallengingPhoto:Laura SchmidtToo WetToo DryEarly

5、 Nitrogen Application is KeyMay 5,2022Near Melita Seed head developed around 5th leaf stage,usually mid-May Any N not plant available by then goes towards protein and vegetative growth not yieldVarietiesCharacteristicAAC Wildfire33 Site YearsAAC Vortex20 Site YearsYield(bu/ac)8987Protein(%)11.712.3R

6、elative Winter HardinessVery GoodVery GoodRelative MaturityLateMediumHeight(cm)8583LodgingGoodVery GoodCommon BuntMRSStem RustSRLeaf RustIRStripe RustRRFusarium Head BlightMRMRSource:Seed Manitoba 2024WildfireVortexVarieties Changing of the GuardVariety20212024Emerson35%15%Gateway33%5%Elevate16%N/AW