M A R C H 2 0 1 9 POTATO GROWER 17 Figure 1. Severe ALS-inhibitor injury to potato foliage. Figure 2. Severe ALS-inhibitor injury to roots and tubers. Figure 5. Glyphosate injury to potato foliage. Figure 3. Plant growth regulator injury to potato foliage. Figure 4. Injury to tubers from plant growth regulators. Figure 6. Glyphosate injury to potato tubers.