b'izer.To accomplish this objective, nineprogress.ResearchFarmevaluatestheeffectsof P treatments and two varieties, Russet potatocultivar(RussetBurbank, BurbankandIvoryRusset,arebeingEvaluationofManagementBannock Russet, and Norkotah Russet), evaluatedunderfumigatedandnon- PracticestoImproveSoilHealthfumigation (Vapam vs. no Vapam), and fumigated conditions. Based on resultsfor Potato Productioncover crops coupled with turkey manure from the first year, Ivory Russet is highlyThis study is the fourth year of a largeintwo-andthree-yearrotationson responsive to P fertilizer rate on high Pmultistateresearchprojectentitledpotato soil health and incidence of soil-testingsoils.TherewasnodifferenceEnhancing Soil Health in U.S. Potatoborne diseases. The three-year rotation due to mycorrhizae inoculation.RussetProduction Systems funded in 2018 bywas initiated in 2019 and the two-year BurbankwaslessresponsivefirstyeartheUSDA-NIFASpecialtyCropsrotation was initiated in 2020.Metam butjustasresponsivetoPasIvoryResearch Initiative.Updates about thissodium fumigation was applied to cer-Russet the second year.At equivalent Pproject can be found at the followingtain treatments in the three-year rota-ratesbandingPfertilizeralsotendedwebsite:http://potatosoilhealth.cfans.tioninNovember2018andin increase yields only in the second year.umn.edu/.In one of the four projectNovember 2019 for the two-year rota-Because of the current high price of Pobjectives, each participating state hastion.Turkeymanurewasappliedto fertilizer, the yield response to high Pset up replicated plots evaluating howselectedtreatmentsinthethree-year fertilizer rates may not always offset thevariousmanagementpracticesaffectrotation plots in April 2019 and for the price of extra fertilizer.A more detailedsoil health indicators and potato yieldtwo-yearrotationplotsinApril2020. economicanalysisiscurrentlyinand quality.Our study at the Sand PlainTurkey manure was also applied to the JULY/AUGUST 2022 POTATO GROWER 15'