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SPUDSMART.COM2Summer2014Vol.11No.3SpudSmartisaresourceorCanadianpotatoproducersandisdedicatedtothepromotionoinnovationsustainablesuccessandgrowerproftability.SubscriptionsCanadaCDN45.00yearplusGSTInternationalCDN95.00yearIssuesInk6327435CanadaLtd.403-313PacifcAvenueWinnipegMBR3A0M2Phone204453-1965Fax204475-5247e-mailissuesissuesink.comspudsmart.comPublisherShawnBrooksbrookissuesink.comEditorMarkHalsallmhalsallissuesink.comEditorialJulieDeeringLindsayHomanShannonSchindleMarcZienkiewiczEditorialAdvisorLukiePieterseEditorialAdvisoryBoardKhalilAl-MughrabiPhDPathologistPotatoDevelopmentCentreNewBrunswickDepartmentoAgricultureAquacultureandFisheriesBenoitBizimunguPhDScientistBreederPotatoResearchCentreRobertC.BobHamiltonProductManagerPotatoesVegetablesEngageAgroJasonKehlerOwnerManagerKehlerFarmsLtd.KeithKuhlChairmanCanadianPotatoCouncilBillMoonsTerritorySalesManagerHorticultureBayerCropScienceRickD.PetersPhDResearchScientistAgricultureandAgri-FoodCanadaJanetPorchakMBANationalMarketingManagerUAPCanadaTracyShinners-CarnelleyPhDDirectorResearchQualityEnhancementPeakotheMarketBertTuplingOwnerShareholderTuplingFarmsLtd.PeterVanderZaagPhDOwnerSunrisePotatoHubertZandstraPhDDirectorGeneralEmeritusInternationalPotatoCenterMarketingmarketingissuesink.comCraigArmstrongBrendaEzinickiAdriaGrewalSamMostaaHitenShahArtandProductionKyleDratowanyJeHiebertTheresaKurjewiczCalebMacDonaldVinceMendellaLesleyNakonechnyCirculationDeanFrenchBradGordonSpudSmartmakesnoexpressedorimpliedwarrantiesomerchantabilityorftnessoraparticularpurposeorotherwiseconcerningtheuseoanyproductandassumesnoliabilityoranyinjuryordamagedirectorconsequentialincurredromtheuseosuchproductsorservicestherein.FederalProvincialandMunicipallawsandregulationssupersedetheinormationcontainedherein.PublicationsMailAgreementNo.40030841.ReturnundeliverableCanadianaddressestoIssuesInk403-313PacifcAvenueWinnipegMBR3A0M2PRINTEDINCANADAPleaserecyclewhereacilitiesexist.Nopartothismagazinemaybereproducedwithoutthewrittenpermissionothepublisher.PrivacyCodeToviewourprivacypolicygotoourwebsiteatspudsmart.comFROMOURDESKSearchingforaSilverBulletByMarkHalsallTHECLOCKistickingonThimet15GtheinsecticideofchoiceforcontrollingwireworminpotatoesinmostareasofCanada.BecauseCanadasregulatorshavedecidedtophaseoutThimetduetoenvi-ronmentalconcernsthepesticidewillnolongerbeavailableforuseonpotatoesasofAug.12015.WithwirewormpopulationssteadilyrisinginPrinceEdwardIslandandotherpartsofthecountrytheresaquestionhangingoverthepotatoindustrythatsbeingaskedmoreandmoreoftenWhatwilltakeThimetsplaceFipronilhasbeenviewedbymanyintheindustryasapotentialsilverbulletforwirewormcontrol.TheinsecticideisregisteredintheUnitedStatesforuseonpotatoesanditssaidtobeeffectiveagainstallspeciesofwirewormandtherearemany.HoweverpronilisnotregisteredinCanada.Itsuptothechemicalindustrytodecidewhethertopursueregistrationoftheproductforuseonpotatoesinthiscountry.Thathasnthappenedyetandthereisgrowingdoubtwithinthepotatosectorthatiteverwill.Theironyisthatpotatoesgrownusingpronilarebeingcon-sumedbyCanadians.TheUnitedStatescanexportpronil-treatedpotatoesintoCanadabecausetheydontexceedthegeneralmaxi-mumresiduelimitMRLof0.1ppmasspeciedinHealthCanadaslistofMRLsregulatedunderthePestControlProductsAct.AfurtherironyisthatCanadianpotatoesgrownwithawire-wormtreatmentlikechlorpyrifoscantbeshippedtotheUnitedStates.Thatsbecausechlorpyrifosisnotregisteredforuseonpota-toeseithergrownintheU.S.orimportedintothatcountryandaMRLsituationsuchasthatpertainingtopronil-treatedpotatoesisntpos-sibleunderAmericanregulations.AllthishassomegrowersinCanadafeelingthedeckcouldbestackedagainstthemintheirghtagainstwireworminthecomingyears.Thatsnottosaythereisnthope.Therearenumerousresearchinitiativesinvolvingcroprotationsandinsecticideefcacystudiesunderwaydesignedtocomeupwithnewwaystocombatthisde-structivepotatopest.InadditiontheindustryiswelcomingtheregistrationjustthisyearofanewinsecticidecalledbifenthrinCaptureforcontrolofwirewormonpotatoes.GrowersindifferentpartsofthecountryaretrialingbifenthrinonpotatoplotsthissummertoseeforthemselveshowthechemistrystacksupagainstThimetandotheravailablewire-wormcontrolmeasures.ForthesakeofCanadaspotatoindustryhereshopingeveryoneispleasedwiththeresults.