Saynis yahanada ARS waxay sii daayeen laba nooc oo baradho ah oo cusub - 'Clearwater Russet' iyo 'Blazer Russet' - kuwaas oo ay isticmaali doonto McDonald's shiilan Faransiiska. Shirkaddu waxay leedahay shuruudo sare oo loogu talagalay spuds-keeda, iyada oo aqbashay toddoba nooc oo keliya si ay u isticmaasho shiilankeeda sannadihii la soo dhaafay.
Iyadoo qiimaheedu yahay beeralayda USD4bn, inta badan baradhada waxaa laga soo saaraa waqooyiga Maraykanka waxaana lagu farsameeyaa inta badan shiilan iyo jajabyo. Laakin baradhadu aad bay u baaba'aan, dalagga waa in la cunaa, la warshadeeyaa, ama la kaydiyaa qabow isla markiiba goosashada ka dib.
Dhibaatadu, si kastaba ha ahaatee, waa kaydinta qabowgu waxay u horseedi kartaa midab madow oo aan la aqbali karin ka dib habaynta taas oo ka dhigaysa baradhada mid aan la iibsan karin. Beddelku waa in la kordhiyo wax soo saarka meelaha diiran ee koonfurta Maraykanka. Laakiin necrosis kulaylka gudaha, cillad tuber gudaha ah oo u horseedda dhibco bunni ah, waa dhibaato weyn oo meelahaas ah.
Cilmi-baarayaashu waxay markaa sii daayeen noocyada cusub ee baradhada ee u adkeysanaya dhibaatooyinka soo baxa inta lagu jiro kaydinta iyo kulaylka necrosis. Siideynta cusub waxaa ka mid ah 'Elkton', beer cusub oo la jarjaray oo iska caabin weyn u leh necrosis kulaylka gudaha kaasoo muujinaya inuu aad caan uga yahay beeraleyda Koonfurta.
Kuleylka gudaha ee baradhada Koonfurta Maraykanka ayaa sababa dhimashada hilibka gudaha tuberka baradhada. Kala duwanaanta baradhada cusub ee ARS, Elkton, waxay u adkaysataa necrosis kulaylka gudaha. Elkton waxaa sii daayay Adeegga Cilmi-baarista Beeraha, Waaxda Beeraha ee Mareykanka, iyo Saldhigyada Tijaabada Beeraha ee Florida, Pennsylvania, New Jersey, iyo New York, Adeegga Cilmi-baarista Beeraha ee Waqooyiga Carolina, iyo Saldhigga Tijaabada Beeraha iyo Kaynta Maine ee 2012. waa wareegsan, kala duwanaansho cad-maqaar oo iska caabin ah necrosis kulaylka gudaha oo si toos ah uga soo duurka ee koonfurta. Kala duwanaanshahan ayaa ka faa'iideysan doona warshadaha jajabinta baradhada iyagoo ka dhigaya digriiga tayo sare leh oo ka nadiif ah cilladaha gudaha oo ay heli karaan soosaarayaasha inta lagu jiro xilliga gu'ga dambe iyo xilliga koritaanka bartamaha xagaaga.
Highland Russet waa noocyo kala duwan oo baradho ah oo leh digriiga digriiga dhexdhexaadka ah waxaana lagu yaqaanaa wax soo saarkeeda sare ee suuqa iyo borotiinka tuberka (35% ka weyn Russet Burbank). Waxay ku habboon tahay suuqa cusub iyo sidoo kale diyaarinta shiilan Faransiiska iyo badeecooyinka kale ee baradhada barafaysan leh midab shiilan oo aad u fiican iyo dhacdo yar oo sonkor ah ayaa dhammaatay.
Clearwater Russet waa beerashada baradho maqaar leh oo ku habboon habaynta ama baakadaha cusub. Waxaa xusid mudan in ay yar tahay cilladaha dibadda taas oo wax ka tara wax-soosaarkeeda US No 1 ee sarreeya marka loo eego heerka warshadaha-labada-ujeedka, Russet Burbank. Clearwater Russet waxa kale oo ay leedahay tayo habayneed oo gaar ah, oo leh dhacdooyin hoose oo sokor ah iyo iska caabin macaan oo qabow ay keentay taas oo u oggolaanaysa in lagu kaydiyo heerkul ah 7.2°C ilaa 250 maalmood iyada oo aan loo baahnayn dib u habeyn, oo leh midab shiil kaydintan nidaamka oo si joogto ah u jooga 1.0 (USDA Fry Color Scale).
Beertaani waxay sidoo kale caan ku tahay borotiinka tuberka sare, kaas oo 35% ka weyn yahay Russet Burbank. Tijaabooyin xilli-buuxa ah oo lagu sameeyay muddo saddex sano ah California, Colorado, Idaho, Oregon, iyo Washington, Clearwater Russet waxay lahayd wax-soo-saar wax-soo-saar wax yar ka hooseeya Ranger Russet iyo Russet Burbank, laakiin celcelis ahaan 2% iyo 30% ayaa ka sarreeya US No. 1. wax-soo-saarka, siday u kala horreeyaan, dhammaan gobollada.
Celceliska cufisjiidadka gaarka ah ee Clearwater Russet wuxuu la mid yahay Ranger Russet oo aad uga sarreeya Russet Burbank. Clearwater Russet waxay u adkaysataa fayraska baradhada X (PVX) iyo tuber bararka goor dambe waxayna si dhexdhexaad ah u adkaysataa Verticillium wilt, qolof caadi ah, iyo nooca caadiga ah ee fayraska baradhada Y (PVYO).
Calaamadaha caabuqa ee leh laba nooc oo necrotic ah oo PVY ah laguma arag digriiga Clearwater Russet ama Russet Burbank laakiin waxaa lagu arkay Ranger Russet. Dareen-celinta nabarka Blackspot ee Clearwater Russet waa ka hadal yar marka loo eego Ranger Russet ama Russet Burbank midkood.
Dhacdooyinka wadnaha godan ee Clearwater Russet waa dhexdhexaad inta u dhaxaysa Ranger Russet iyo Russet Burbank. Meesha buniga ah ee gudaha ah ayaa lagu xusay inay dhibaato ku tahay Clearwater Russet oo ku taal Basinka Columbia ee Oregon laakiin looma arag inay dhibaato ku tahay gobollada kale ee sii kordhaya.
Clearwater Russet waxaa la sii daayay 2008dii USDA-ARS iyo Saldhigyada Tijaabada Beeraha ee Idaho, Oregon, iyo Washington, waana wax soo saarka Barnaamijka Horumarinta Baradhada Waqooyi-galbeed ee Baasifigga (Saddex-Gobol).