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Piles of Apple Prunings as Sources of Conidia of Physalospora obtusa. P. M. Miller, Department of Plant Pathology and Genetics, The Connecticut Agricultural Experiment Station, New Haven 06504; S. L. Anagnostakis, Department of Plant Pathology and Genetics, The Connecticut Agricultural Experiment Station New Haven 06504. Phytopathology 63:1080. DOI: 10.1094/Phyto-63-1080.

Twigs in piles of apple prunings are an abundant source of conidia of Physalospora obtusa. Twigs 10-mm or less in diam each produce about the same number of conidia. No conidia could be obtained from piles of chipped apple prunings. A Cytospora sp. was often found as a secondary invader of the dead apple twigs.