Maize leaves inoculated with B. maydis alone became yellow
with many blight spots (Fig. 2) and disease severity increased with
time. In contrast, when both B. maydis and CHM1 culture filtrate
were inoculated together, the disease severity was less, most leaves
were green with few blight spots and the disease increased little
with time. The disease index for inoculating B. maydis alone was
78.33%, but only 23.33% for CHM1 and B. maydis together, suggesting
a 70.22% protection effect (