Stem Rot and Wilt of Exacum affine Caused by Nectria haematococca. Luellen Pierce, Staff Research Associate, Department of Plant Pathology, University of California, Berkeley 94720. Arthur H. McCain, Extension Plant Pathologist, Department of Plant Pathology, University of California, Berkeley 94720. Plant Dis. 66:161-163. Accepted for publication 6 October 1981. Copyright 1982 American Phytopathological Society. DOI: 10.1094/PD-66-161.

Nectria haematococca caused stem rot, wilt, and collapse of Exacum affine. The disease was severe at 27 and 32 C but not at 21 C. Treatment with mancozeb, captan, or chlorothalonil controlled the disease.

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