Downy mildew of Cucumber

Figure 1. Downy mildew of cucumber. Note angular chlorotic lesions.

Figure 2. Downy mildew of cucumber. Note angular chlorotic lesions.

Figure 3. Downy mildew of cucumber.

Figure 4. Downy mildew of cucumber. Note dark, sporulation visible on the underside of the leaf.

Figure 5. Downy mildew of cucumber. Note chlorotic and necrotic lesions.