Regional crown rot management – Mungindi 2015

Abstract

Key findings • Yield loss from crown rot ranged from 11.0% (not significant) in the barley variety La Trobe[PBR] up to 70.0% in the bread wheat variety EGA Gregory[PBR]. • Bread wheat variety choice had a large effect on yield where there were high levels of crown rot infection with nine varieties being between 0.46 t/ha to 1.69 t/ha higher yielding than EGA Gregory[PBR]. • The barley variety La Trobe[PBR] was 2.08 t/ha higher yielding than EGA Gregory[PBR] under high levels of crown rot infection. • Rancona® Dimension provided a small (0.29 t/ha) yield benefit compared to no seed treatment in the presence of high levels of crown rot infection at this site in 2015 but was far from providing complete control of the disease with 63% yield loss still occurring.