VIEW ARTICLE

Recovery of Cephalosporium gregatum from Soybean Straw. L. E. Gray, Research Plant Pathologist, Plant Science Research Division, ARS, USDA, Urbana, Illinois 61801; Phytopathology 62:1362-1364. DOI: 10.1094/Phyto-62-1362.

Cephalosporium gregatum was recovered from overwintered soybean straw when the straw was ground in a Wiley mill and the resulting material was incubated at 18 C for 5 days on water agar containing tetracycline HCl and streptomycin sulfate. Sporulation of the fungus on soybean stems in the field was noted up to mid-November but thereafter was observed rarely, presumably because saprophytic microorganisms disintegrated the cortical tissue. Spores of the pathogen were not detected with soil dilutions but the fungus was recovered frequently with stems fragments. The fungus survives in soil within the woody stem tissue which probably serves as the source of inoculum.