Monilinia laxa

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Monilinia laxa symptoms on apple (click on image to enlarge it)
Source: Wikimedia Commons

Monilinia laxa (Aderh. & Ruhland 1905) Honey 1936

The fungus causes European brown rot on stone fruits (almonds, peach, cherry, plum) and apple. It occurs in orchards but also as a post-harvest disease. It is widespread in Europe and some other regions. Early infections result in blossom blight and twig cankers. Later in the season, it infects the fruits which drop to the ground and mummify. The fungus overwinters on the mummified fruits.

Vernacular names
• Deutsch: Fruchtfäule an Pfirsich
Monilinia-Spitzendürre
• English: European brown rot
• Français: pourriture brune des arbres fruitiers

The disease is mainly controlled by fungicides, e.g. applied early in the season to prevent blossom blight or on the mummified fruits. However, fungicide resistance (e.g. against benomyl) has become common in some countries.

Synonyms:
Monilia laxa (anamorph synonym)