“…These results have proven consistent across a substantial number of red‐skinned potato cultivars (Busse & Bethke, 2020; Roe et al., 2014; Rosen et al., 2009; Thornton et al., 2013; Waterer, 2010) although the effectiveness varies with environment/growth year (Roe et al., 2014; Rosen et al., 2009), the timing of application (Nylund, 1956), and cultivar (Fritz, Hebel, Borowski, & Hung, 1991; Thornton et al., 2013). Application of 2,4‐D is also at times used to decrease the proportion of oversize tubers (Fritz et al., 1991; Payne et al., 1951; Thornton et al., 2013) and may reduce skin damage caused by common scab (Waterer, 2010; Waterer, Elsadr, & McArthur, 2011). Originally developed as a phenoxy class (auxin mimic) foliar herbicide that is used to eliminate broadleaf plants from grass crops (Peterson, McMaster, Riechers, Skelton, & Stahlman, 2016), 2,4‐D is primarily used for manipulating skin color of potatoes, especially the red‐skinned ones.…”