Lack of Leaf Cover
Fruit have yellowish or whitish patches on side exposed to sunlight. These patches turn leathery and dry out. They may become infected with various types of mold as secondary infections in the wounded tissue. Fruit protected by shade from leaf cover or shading material are unaffected..
Select varieties noted to retain leaf cover throughout season. Use good fungicide/insecticide program to prevent leaf loss due to insects and disease. On small scale, can cover fruit with straw or shade plants with row cover.