b'potatoesshowednumericaldiffer- authors,orencesbetweencultivarsorselec- NDSU Extensiontions tested (Table 2). We plan on orUniversityofrepeatingthisworkinthe2020 MinnesotaEx-growing and storage season.tension.Repro-ductionoftheThe data presented in Table 1 was tablesispermis-analyzed statistically. These analyses sible if presentedallowthereadertoascertain,ata with all the samepredetermined level of confidence, i n f o r m a t i o nifthedifferencesobservedamong foundinthiscultivars/selections are reliable, or if p u b l i c a t i o nthey might be due to error inherent (meaningnoin the experimental process. portionisdelet-ed and the orderTheLSD(leastsignificantdiffer- of the data is not Image 2. Pressure flattening of yellow-skinned potatoes. ence)valuesbeneaththecolumns rearranged). applyonlytothenumbersinthecolumn in which they appear. If the The authors acknowledge the con- Service,ColoradoStateUniversity,differencebetweentwocultivars/ tribution of cultivars and advanced theUniversityofWisconsin,selections exceeds the LSD value at selectionsforthisworkfromthe MichiganStateUniversity,EBE0.05 it means that with 95% confi- breeding programs at North Dakota Farms,NorthernKonstarPotatoes,dence the higher-yielding cultivar/ StateUniversity,theUniversityof ParklandSeed,RealPotatoandselectionhasasignificantdiffer- Minnesota, the U.S. Department of SunRain.ence. When the difference between Agriculture-AgriculturalResearchtwo cultivars/selections is less thanthe LSD value, no significant differ-encewasfoundbetweenthetwo The Insulation Placeunder these storage conditions.14770 69th Place NEGrafton, ND 58237 TheCVstandsforcoefficientof Urethane Spray-On Insulationvariation and is expressed as a per- Eliminates air infiltration & stops condensationcentage.TheCVisameasureof Highest R-Value Insulation Fire Proofing\x00 \x00variabilityinthetrial.LargeCVs Moisture Barriers Flat Roofs\x00 \x00meanalargeamountofvariationthat could not be attributed to dif- Grafton(701) 352-3233 1-800-352-0620ferences in the cultivars/selections. Bismarck(701) 255-0025 1-866-425-0025Website www.theinsulationplace.comThe data provided does not indicateendorsementorapprovalbytheMAY/JUNE 2020 POTATO GROWER 19'