Farrell, R.

Lemke, R.

Tomasiewicz, D.

Verburg, E.

Wahab, J.

English

eCommons@USASK

Effects of canola, wheat and faba bean on yield and nitrogen use efficiency in potato production systems

University of Saskatchewan Research Archive

EFFECTS OF CANOLA, WHEAT AND FABA BEAN ON YIELD AND NITROGEN USE EFFICIENCY IN POTATO PRODUCTION SYSTEMSErnst Verburg, Reynald Lemke, Richard Farrell,Jazeem Wahab ,and Dale Tomasiewicz■ Potato is an important crop in Canada (AAFC, 2015);■ Recent expansion of potato processing plants; ■ Saskatchewan has the potential to significantly expand irrigated production.Concerns related to potato production :• Requires more tillage than cereal or oilseed crops;• Produces little crop residue;• Requires large amounts of fertilizer Crop rotation ? Objectives:Evaluate the effect of wheat, canola, and faba beanresidue on soil physical, chemical, and biologicalproperties;Assess the cumulative effects and economic benefitsof the entire rotational sequence.2016201720180, 75, 150, 225 kg N ha-10 & Standard recommendationData 2016 Field crops• Total biomass• N20 emissions0 2 4 60200040006000800010000Totalbiomass(kgha1)acbWheat Faba beanCanolaBelow groundAbove groundLight color is above-ground residueDark color is below-ground residueSignificant differences at α = 0.05 Tukey procedure in total biomass(residue) production between three field crops Gan et al., (2009)Data 2016 Field crops• Total biomass• N20 emissions0 2 4 6025050075010001250TotalN20emission(gramsNha1)clipboard GraphCanola Wheat Faba beanbac2016 N20 emission for field crops weresignificantly different at the α = 0.05 level (Tukeyprocedure).Canola Wheat Faba bean0250500750TotalN2Oemissons(gramsNha1)clipboard GraphCropAmountfertilized(kg N ha-1)Emissionfactor(%)Standard deviationCanola 160 0.18 0.08Wheat 165 0.61 0.10Faba bean 0 nd - - -2016201720180, 75, 150, 225 kg N ha-10 & Standard recommendationEffect of nitrogen fertilizer and previous crop on total potato yieldwas not significant (P = 0.xxxx).Total Potato yieldInteraction effect of nitrogen and field crops on marketable (48 –88 mm) potato yield (P = 0.0218).Marketable potato yieldEffect of nitrogen fertilizer was significant on non-marketable (<48mm) potato yield (P = 0.0017).Non-marketable potato yieldConclusions:First-year main cropsResidue production: Wheat<Faba bean< CanolaN20 emissions : Faba bean<Canola ≤ WheatSecond-year Potato nitrogen:Total yield production: Fababean=Canola=WheatThird-year Wheat nitrogen 2018AcknowledgementsStrategic Research Program − Soils & EnvironmentAgriculture Development FundUndergrad students: Ian & Erick;Master students: Cheyne & Sarah;Technicians: Sarah, Greg, Darin, Frank, Mark, Sharon, Jenn;Supervisors: Richard Farrell, Reynald Lemke,  Jazeem Wahab, Dale Tomasiewicz.

https://harvest.usask.ca/bitstream/10388/8677/1/E.%20Verburg%20et%20al.%2c%202018.pdf

Effects of canola, wheat and faba bean on yield and nitrogen use efficiency in potato production systems

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