Final diagnosis


Stemphylium spp. grey leaf spot

Slight chlorosis of the blade on the periphery of the spots. <i> <b> Stemphylium solani </b> </i> (stephyliosis, gray leaf spot)
Small rounded or sometimes slightly angular spots, initially brown, the center of which becomes lighter (gray) and splits.<i><b>Stemphylium solani</b></i> (grey leaf spot)
As we get older, these little spots dry out completely, and the blade eventually falls off, revealing a hole. <i><b>Stemphylium solani</b></i> (grey leaf spot)
Slight chlorosis of the limbus at the periphery of the spots. <i><b>Stemphylium solani</b></i> (grey leaf spot)
Some spots can merge, causing very significant damage in the long term. <i> <b> Stemphylium solani </b> </i> (stemphyliosis, gray leaf spot)
Les conidiophores de <i><b>Stemphylium floridanum</b></i>, comme ceux de <i>S. solani</i>, sont cloisonnés, rigides, plus ou moins long et mélanisés, avec une extrémité enflée. A partir de celle-ci se forment des conidies mûriformes. (Stemphyliose - grey leaf spot)
The conidia of <b><i>Stemphylium solani</i></b> are also ripe-shaped, brown and have a pointed apex (sometimes eccentric) and a warty wall. They reveal fewer constrictions, one to two, and are shorter (63-52 x 14-20 µm) than those of <i>S. floridanum</i>. This species also does not have a sexual form. (Stemphyliosis - gray leaf spot)
Detail of the conidia of <i><b>Stemphylium vesicarium</b></i> (Stemphyliosis - gray leaf spot)