Regional crown rot management – North Star 2015

Abstract

Key findings • Yield loss from crown rot ranged from 1.4% (not significant) in the bread wheat variety Suntop[PBR] up to 35.0% in the bread variety EGA Gregory[PBR]. • Bread wheat variety choice impacted on yield in the presence of high levels of crown rot infection with all 12 entries being between 0.33 t/ha to 1.53 t/ha higher yielding than EGA Gregory [PBR]. • The yield of the two barley varieties was impacted by late rain at this site in 2015 which resulted in considerable lodging, especially in La Trobe [PBR]. The barley data from this site should be considered with caution. • Rancona® Dimension provided a small (0.22 t/ha) yield benefit compared to no seed treatment in the presence of high levels of crown rot infection (added CR) at this site in 2015 but was far from providing complete control of the disease with 29% yield loss still occurring.