TABLE 11 'Blushing Belle' 'Creamer' Potato Plant Damage-Washington-2 Year Average Tuber Size Growth Stage % Damage Tuber Initiation (8 DAE) 33 66 99 Row Closure (16 DAE) 33 66 99 Pre-Harvest (24 DAE) 33 66 99 Under-Sized Creamers (Ideal) CWT/A 4 5 7 6 4 5 9 8 4 5 8 9 116 113 134 1118 116 119 114 125 116 119 130 145 Over-Sized 143 106 148 155 143 153 146 55 143 133 64 99 and have different growth characteristics than traditional varieties of potatoes. Research began in Washington and Wisconsin in 2019 to determine how plant damage may influence growth and production of this newer potato type. Two varieties were used at each location with 'Blushing Belle' common to both locations and damage applied at various growth stages based on days after emergence (DAE). The research in Wisconsin was not conducted in 2020 due to the unavailability of university staffing. Damage affected the distribution of tuber size (tables 11 and 12). Stand reduction of 75 percent at the tassel (right) as compared to the control plot (left). There is some compensation in remaining plants that indicates damage may not be 1-for-1 as current charts indicate. TABLE 12 'Bintje' 'Creamer' Potato Plant Damage-Washington-2 Year Average Tuber Size Growth Stage % Damage Tuber Initiation (8 DAE) 33 66 99 Row Closure (16 DAE) 33 66 99 Pre-Harvest (24 DAE) 8 THIRDQUARTER2021 33 66 99 Under-Sized Creamers (Ideal) CWT/A 8 6 9 5 8 9 11 12 8 8 11 19 136 101 105 45 136 109 104 63 136 107 107 91 Over-Sized 136 118 121 30 136 148 113 118 136 122 106 29 The control plot (above) at one of the corn multiple defoliation research sites and the 50 percent defoliation at both 10-leaf and milk stages (below). Despite the large difference in appearance, the multiple defoliations resulted in only a 20 percent loss.