Cantaloupe Diseases
Anthracnose
Figure 1. Anthracnose lesions on muskmelon fruit appear sunken while lesions on nearby leaves appear jagged. 
Figure 2. Anthracnose lesions on muskmelon fruit. 
Figure 3. Advanced lesions of anthracnose on muskmelon fruit. Note cracked appearance. 
Figure 4. Close-up of anthracnose lesions on muskmelon leaves. 
Figure 5. Lesions of anthracnose on muskmelon leaves. Alternaria Leaf Blight
Figure 1. Alternaria leaf blight on cantaloupe leaf. Note large, mostly circular lesions with concentric rings. 
Figure 2. Image of several cantaloupe leaves with Alternaria leaf blight lesions. 
Figure 3. Close-up of a leaf with Alternaria leaf blight. Note concentric ring structure of lesions. 
Figure 4. Image of a leaf with lesions of Alternaria leaf blight just beginning to coalesce. Note chlorotic halos. 
Figure 5. A close-up of an individual lesion of Alternaria leaf blight. 
Figure 6. Cantaloupe fruit exposed to possible sunburn due to Alternaria leaf blight. Bacterial Wilt
Figure 1. The wilted and collapsed area on the margin of this leaf is due to bacterial wilt of cantaloupe. Note also the areas of the leaf eaten by cucumber beetles. 
Figure 2. Cucumber beetles have eaten this cantaloupe leaf. If insect frass enters the eaten area, bacterial wilt may result. 
Figure 3. Quick field test for possible bacterial wilt. Stringy, viscous sap may indicate presence of E. tracheiphila, causal pathogen of bacterial wilt. 
Figure 4. General wilt of cantaloupe caused by bacterial wilt. Fusarium fruit rot
Figure 1. Fusarium fruit rot of cantaloupe. 
Figure 2. Fusarium fruit rot of cantaloupe. Note lesion has started in suture area. Varieties with deep sutures seem relatively more susceptible to this disease. 
Figure 3. Fusarium fruit rot of cantaloupe. Gummy stem blight
Figure 1. Gummy stem blight lesion on the hypocotyl of a cantaloupe transplant. Note presence of dark pycnidia. 
Figure 2. Gummy stem blight lesion on cotyledon of cantaloupe transplant. Note pycnidia. 
Figure 3. The gummy stem blight fungus has completely colonized this cantaloupe transplant. 
Figure 4. Gummy stem blight on multiple cantaloupe seedlings in a transplant tray. 
Figure 5. Gummy stem blight lesion on cantaloupe leaf. Note dark pycnidia in lesion and chlorotic margin of lesion. 
Figure 6. Gummy stem blight of cantaloupe. 
Figure 7. Gummy stem blight lesion on cantaloupe fruit. 
Figure 8. Cross section of cantaloupe with gummy stem blight lesion (black rot). 
Figure 9. Crown of cantaloupe plant with necrosis caused by gummy stem blight. Note pycnidia. Phytophthora blight
Figure 1. Phytophthora blight of cantaloupe. Note collapsed vines. 
Figure 2. Phytophthora blight of cantaloupe. Note collapsed vine. 
Figure 3. Phytophthora blight of cantaloupe. Note rotten and necrotic area at collar. 
Figure 4. Phytophthora blight of cantaloupe. Note lesion on stem. 
Figure 5. Phytophthora blight of cantaloupe. Note sporulation on fruit.