b'Septemberandharvestedon16Resultstubers 6 oz and 10 oz. Tuber num-September 2022. Following harvest,Stand, stems per plant, and specificberechoedtheresultsfoundby tubers were graded and sized accord- gravityweresimilarbetweentreat- tuberyield.Basedontheseresults ing to USDA standards. ments. Differences in 6-10 oz tubers,andpreviouswork,turkeymanure totalyield,marketableyield,andhas proven to be a suitable option Yield differences between 2021 (434thepercentoftubers6ozwereforpotatofertilizer.Thisworkhas cwt/a)and2022(392cwt/a)werefound between treatments (Table 1).found that turkey manure with the found because of the late plantingWhencomparedtothegroweradditionofESNcanbenefittotal in 2022. Because of this difference,standing,thenonitrogenand3yield and increase tuber size. An eco-yield data converted to a percent oftons/aturkeymanuretreatmentsnomic analysis should be conducted thegrowerstandardtocombinehad fewer larger tubers. As a result,based on current fertilizer prices to data from 2021 and 2022. Data werethe total marketable yield and per- determinewhatcombinationof analyzed in SAS with an analysis ofcentage of tubers 6 oz was less thanturkeymanureandESNwouldbe variance.Differencesindatawerethegrowerstandard.Numerically,optimal for growing Russet Burbank.separated utilizing a Tukey pairwisetheadditionsofESNtoturkey comparison at p=0.05.manureincreasedthepercentof Figure 1. Turkey manure trial near Perham, Minnesota on August 31, 2022. Grower standard is on the left, 3 tons/a turkey manure in center, and no nitrogen on the right.14 POTATO GROWER JANAURY 2023'