Vegetable Crops Hotline A newsletter for commercial vegetable growers prepared by the Purdue University Cooperative Extension Service

Alternaria leaf blight of Cantaloupe

Alternaria leaf blight on cantaloupe leaf.

Figure 1. Alternaria leaf blight on cantaloupe leaf. Note large, mostly circular lesions with concentric rings.

Image of several cantaloupe leaves with some Alternaria leaf blight lesions.

Figure 2. Image of several cantaloupe leaves with Alternaria leaf blight lesions.

Close-up of a leaf with Alternaria leaf blight.

Figure 3. Close-up of a leaf with Alternaria leaf blight. Note concentric ring structure of lesions.

Image of a leaf with necrotic lesions of Alternaria leaf blight just beginning to coalesce.

Figure 4. Image of a leaf with lesions of Alternaria leaf blight just beginning to coalesce. Note chlorotic halos.

A close-up of an individual lesion of Alternaria leaf blight. Note rings.

Figure 5. A close-up of an individual lesion of Alternaria leaf blight.

Cantaloupe fruit exposed to possible sunburn due to Alternaria leaf blight. Note coalesced lesions.

Figure 6. Cantaloupe fruit exposed to possible sunburn due to Alternaria leaf blight.