b'Hoople, North Dakota North Dakota, Park Rapids, Minnesota, and registered fungicides and biologicalWe are continuing the yellow and red and elsewhere. The success of these tri- products will be tested for the manage-varietytrialswherewillbelookingat als is again in thanks to the excellent mentofRhizoctoniastemcankerandgraded yield and storability. We plan on workofthefieldcrewleadbyDean Fusarium seed piece decay of processingdemonstrating tubers from these variety Peterson and Russell Benz. This year we and table potatoes. The management oftrials at field day and at a winter Tater are also fortunate to have the technical FusariumdryrotisimportantintheTalk. The fresh potato trials are hosted assistanceofKalLarsonandJacory development of a productive crop. Thisby JG Hall & Sons.Ingraminthefield.Manyothersare disease can cause weak and unproduc-involved in field planning and data col- tive plants and often produces a predis-The late blight spore trapping network lection and analysis including Viviana posinginfectionsiteforbacterialsoftthisyearwillbespreadacrossNorth Rivera-Varas,JudithRengifo,Rachel rot decay. Dakota and Minnesota potato growing Selstedt,Dr.AnnaStasko,Dr.Binodareas. Thank you to all the grower coop- Pandey, Dr. Fereshteh Shahoveisi, Ipsita This year, we also are conducting oneerators who send in the filters each week Mallik and Sunil Shrestha. seed treatment trial for management ofto make this project possible. The pur- silverscurfblemishoftablepotatoes.pose of the spore traps is to determine if TheNPPGAirrigatedsiteatInkster, Becausethisisaseed-bornedisease,there are any late blight spores in the North Dakota will be utilized to evalu- plantingseedpotatoesfreeoftheair. It does not indicate that late blight is atefungicidesforthemanagementof pathogen is a primary method for man-found in the field, because a dead spore the foliar phase of black dot, early blight agement. For seed lots infected with sil-could be captured from that air.and brown spot. These trials include the verscurf,managinginoculumontheevaluation of experimental chemistries seedusingafungicideseedtreatmentNDSU Potato Pathology and registered fungicides. Grower stan- will help reduce silver scurf on harvest-Dr.JuliePasche,NDSUandDr.Gary dard treatments are included in all trials ed potatoes. Secor, NDSU toallowcomparisonsindiseaseman-agementbetweennewfungicidesand We continue research on the identifica-Plantingforthe2021fieldseasonis fungicides with which growerscomplete and we look towards generat- are familiar. The placement of Augies Chemical ingresultsthatwillmovethepotato fungicides in a program will beindustryintheregionforwardinour evaluated to enable growers to Companyfight to manage disease.obtainthegreatestreductions Specializing in Potato Dormancy &Sprout Inhibiting Application in disease while aiming to min-This year, NDSU potato pathology will imizeinputs.Wethankthe Products:conduct field trials across eastern North NPPGA, Cavendish Farms and 1,4 Seed1,4 Ship1,4 Sight Pin Nip 98% CIPCDakotaandwest-centralMinnesota JRSimplotCompanyandthe 1,4 Zapwithanultimategoalofimproving ForestRiverColonyforsup-Full line of products for managementpracticesfordiseases portingtheresearchatthe wash plants/packaging:important to local growers. These trials Inkster, North Dakota irrigated Sprout Torchare being conducted at the NPPGA irri- research site. Spud Guard 2ECgatedresearchsiteatInkster,North StorOx 2.0Dakota and the NDSU Oakes Irrigation Trials also are being conductedResearchSite.RobertTitusResearch attheNPPGAInkstersiteto Contact: Don Augustin or John OstenrudeDon: 701-520-1373Farm (managed by Kelly Cooper, Heidi evaluateseed-bornedisease John: 701-360-3919 Eslinger and Seth Nelson), as well as in management.Seedtreatment Email: [email protected] orcooperating grower fields near Lisbon, andin-furrowexperimental [email protected] POTATO GROWER JULY/AUGUST 2021'