Guava (Psidium Guajava): Key Diseases and Their Management

Guava (Psidium guajava Linn.) an important fruit of subtropical countries is affected by about 177 pathogens of which 167 are fungal, 3 bacterial, 3 algal, 3 nematodes, and one epiphyte. Wilt of guava is the most important disease of guava. Besides this disease, fruit and postharvest diseases are also important which causes serious loss. The fruit diseases are of two types, that is, field diseases and postharvest diseases, which develop during transit and storage. In this chapter, important diseases are described with their symptoms, causal organisms, etiology, disease cycle, epidemiology, and disease management practices.