Figure 1

Effects of companion cropping with potato onion on the disease incidence and index of tomato verticillium wilt.
TM indicates tomato monoculture; TC indicates tomato grown with potato onions. (A) Disease incidence. (B) Disease index. (C) Picture of disease symptom. The data are represented as the means ± SD, n = 3. The small letters above the column represent significant differences between two groups of mean values (p<0.05).