- classification : Fungi, Ascomycota, Sordariomycetes, Hypocreomycetidae, Hypocreales, Nectriaceae
- English name: Fusarium wilt

 

Fusarium oxysporum f. sp. lactucae soil is an emerging vascular fungus in Europe that was first reported on lettuce in Japan in 1955, and later in other Asian countries: Taiwan in 1998 and the Republic of Korea in 2006. It has also been reported. reported in the United States, in 1990 in California, then in Arizona in 2001.

Its distribution in Europe is still very limited . It causes damage in Italy and Portugal. It is now present in France and is starting to cause certain problems for producers, especially in the South-East.

It is able to attack lettuce but also the vegetable mash ( Valerianella locusta ). Its damage can be considerable, especially in production areas where lettuce monoculture is practiced; in Italy, more than 70% of diseased plants could be found in some plots. In this country, batavia-type salads grown in spring and summer are particularly affected.