Disease guide

Symptoms are visible on apical growing points, flowers and fruits. Initially, water-soaked areas develop on leaves, and apical growing points become blighted. Later, the fungus grows rapidly downward, causing dieback. Darkgray fungal growth can be seen on some lesions. Close inspection will reveal silvery, spine-like fungal structures and dark spores. In seedlings, symptoms may be confused with Phytophthora Blight. A black soft rot can also develop in fruit.

The fungus is found throughout the tropics on many crops including beans, peas, squash, cucumber, eggplant and pepper. Extended periods of rain, high humidity and high temperatures generally favor fungal sporulation and disease development. The fungus is generally spread via wind and splashing water, and on clothing, tools and cultivation equipment.

There are few management techniques available; fungicide sprays may help reduce disease damage.