Phomopsis sclerotioides  Kesteren, (1967)

"Black" root rot

- classification : Fungi, Ascomycota, Pezizomycotina, Sordariomycetes, Sordariomycetidae, Diaporthales, Diaporthaceae
- téléomorphe : Diaporthe
- English name: black root rot

P. sclerotioides is present in many countries in the world, it has mainly been reported on cucumber, but it is capable of attacking other Cucurbitaceae: melon, zucchini, squash, watermelon ... It is present, for example, in Canada, Malaysia, Japan, in several northern European countries such as Denmark, Germany, England, Holland, Bulgaria, and more recently Italy.

It has been rife in France for many years, especially feared on cucumber. It also affects the melon in an often insidious way, going unnoticed. It is very occasionally observed on zucchini , even on squash ; often  unsuspected, it can be responsible for limited damage for the moment.