Fruit rot

Fruit rot is a collective term for various fungal infections that compromise the quality and yield of crops. Common pathogens include Monilinia, Botrytis, and Rhizopus species. These fungi are opportunistic, attacking host tissues as they approach maturity, leading to rapid decay of the fruit both in the field and during post-harvest storage.

The host range for these pathogens is diverse, impacting various agricultural sectors globally. Key affected crops include pome and stone fruits, as well as specific produce such as Sweet Pepper, papaya, mango, banana, and avocado. The infection can occur at any point after the fruit has begun to swell, often following damage from weather, pests, or improper handling.

The visible symptoms of fruit rot typically start as small, soft, discolored spots that rapidly expand across the surface. As the fungus consumes the fruit tissue, the surface becomes covered in fuzzy or powdery sporulation. In many cases, the fruit loses its structural integrity, develops a fermented odor, and eventually dehydrates into a mummified husk that may remain attached to the plant.

Environmental conditions such as high humidity, rainfall, and moderate temperatures are primary drivers of pathogen dispersal and infection. Spores rely on surface moisture to germinate and penetrate the epidermis of the fruit. Inadequate air circulation and high plant density create microclimates that significantly increase the probability of a devastating outbreak.

Prevention and control strategies focus on sanitation and environmental management. Growers should prioritize the regular removal of infected debris and mummified fruit, which act as primary inoculum sources. Implementing proper pruning to increase airflow, managing pest populations that cause fruit wounding, and applying targeted fungicide programs are essential for sustainable management of fruit rot.