Figure 2

Protection of summer squash and cucumber from attack by Sphaerotheca fuliginea and Pseudoperonospora cubensis, respectively, by compound 18.
(A) Compound 18 prevented S. fuliginea from infecting and killing summer squash. Compound 18, at different concentrations, were spread on leaves and photographs were taken after 7 days. (B) The relative control effect of compound 18 against powdery mildew and downy mildew in field trials.