Multiple choice Which of the following matchings is not correct? Coffee leaf rust: Hemileia vastatrix Ergot of rye: Claviceps purpurea Early blight of potato: Phytophthora infestans Crown rust of oats: Puccinia coronata Halo blight of beans: Pseudomonas syringae Reveal answer Fill a bubble to check yourself C Correct answer Explanation Early blight of potato is caused by the fungus Alternaria solani.