Final diagnosis


Colletotrichum coccodes (Black dot)

On foliage : early wilting and dying plants. <i>Colletotrichum coccodes</i> (Black dot)
On foliage : stem infection at the end of the growing period. <i>Colletotrichum coccodes</i> (Black dot)
On tubers : diffuse brown spots with black dots (microsclerotia).<i><b>Colletotrichum coccodes</i></b>
Lesions on tubers caused by fungal infection. <i>Colletotrichum coccodes</i> (Black dot)
Irregular and diffuse light to dark greyish surface areas with or without the formation of fructifications (microsclerotia). <i>Colletotrichum coccodes</i> (Black dot)
On tubers : an atypical symptom of black dot: depressed tuber surface after cold storage (10° C) and dehydration. <i>Colletotrichum coccodes</i> (Black dot)