Apple scab
What is apple scab? Apple scab is one of the most economically important fungal diseases of apple worldwide. Caused by the fungus Venturia inaequalis [...] Venturia inaequalis primarily survives the winter in infected fallen leaves on the orchard floor. Within these leaves, the fungus forms pseudothecia, which produce [...] that are released during spring and initiate new infections. In mild climates, the fungus may also overwinter in infected buds and produce conidia, providing