Evaluation location: Wisconsin, United States
Three whole field tubers (if medium or small) or longitudinal sections (if large) were peeled (except as noted) for about 250 g of tissue for each sample. They were rinsed with tap water and rinsed with distilled water. Water was allowed to drip off, and tubers were sliced into french-fry style pieces with a Vadalia Onion Slicer. The pieces were put in a blender cup, nylon slipper sock stretched over, and contents shaken into the sock. Sample bags were put on black flats over plasticized paper and placed back in 40F cooler. When all samples were prepared, they were taken out again for weighing. They were then put into a warm air dryer at 130F until weight was stable. Dry/fresh weights was the calculutation for % dry matter. Figures usually represent two replications from separate field plots.