VIEW ARTICLE

Ecology and Epidemiology

Stubble Management and the Site of Penetration of Wheat by Fusarium graminearum Group 1. B. A. Summerell, Fusarium Research Laboratory, Department of Plant Pathology and Agricultural Entomology, The University of Sydney, New South Wales 2006, Australia; L. W. Burgess, T. A. Klein, and A. B. Pattison. Fusarium Research Laboratory, Department of Plant Pathology and Agricultural Entomology, The University of Sydney, New South Wales 2006, Australia. Phytopathology 80:877-879. Accepted for publication 26 March 1990. Copyright 1990 The American Phytopathological Society. DOI: 10.1094/Phyto-80-877.

Stubble management affected the site of penetration of wheat by Fusarium graminearum Group 1. When infested stubble was retained on the soil surface in a relatively undisturbed state, penetration occurred principally through the crown and basal stem regions. Penetration occurred through the scutellum, subcrown internode, and lower crown regions when stubble was incorporated or when stubble was burned and the remains incorporated. Differences in the site of penetration reflected the distribution of inoculum after the three stubble management practices. Regardless of the site of penetration, basal tissue regions were colonized to a similar extent by harvest maturity.