Fig. 5

Quantification of herbicidal effect on a five-point scale. Three blind assessors independently ranked all the photographs of the plants on a five-point scale as described (n = 3 for each replicate). a 0 = healthy plant with no visible signs of leaf curling or necrosis. b 1 = minor leaf curling associated with or without slender tissue necrosis. c 2 = leaf curling associated with or without mosaic tissue necrosis. d 3 = prominent leaf curling associated with sizable tissue necrosis and chlorosis. e 4 = very prominent leaf curling along the axis, major necrosis and chlorosis. f 5 = pronounced leaf curling along the axis, major necrosis, chlorosis and death. Scale bar equals to one cm