4 [4] Most leaves moderately curling; more than half of the upper surface of the leaf visible - Majority of plants with Score [6] Stunting, slight yellowing; most leaves becoming prostrate - Majority of plants with Score 6 [7] Severe stunting, yellowing; leaves prostate and some leaves dead - Majority of plants with Score 7 9 [9] Plant dead - Majority of plants with Score 1 [1] No Symptoms - Majority of plants with Score scale_of 8 [8] Only the center few whorls of leaves green and alive - Majority of plants with Score 5 [5] Slight stunting, severe leaf curling; less than half of the upper leaf surface visible due to curling; most of the larger leaves still erect - Majority of plants with Score entity [3] Slight leaf curl of the edge of new leaves; pimpling on the veins of the underside of the leaves - Majority of plants with Score 3 method_of 2 [2] Vein clearing of heart leaves, slight pimpling of veins on the underside of leaves - Majority of plants with Score variable_of attribute acronym Curly top virus susceptibility scale