Crown rot yield loss response curves – Macalister 2015

Abstract

Key findings •• Yield loss response curves are an additional tool to help growers in varietal selection decisions to maximise returns where disease is present. •• Variations occurred in the yield response of varieties to crown rot, along with their resistance to this disease. •• The variety Suntop[PBR], although displaying crown rot symptoms similar to that of a susceptible variety, demonstrated a greater ability to maintain yield where disease was present than other varieties that are considered tolerant. •• The selection of varieties based purely on current resistance categories may be overlooking genetics with improved tolerance, such as the variety Suntop[PBR].