Anecdotal evidence shows that wheat varieties released in WA are gradually changing from floppy to more erect leaves. This change in canopy architecture (mainly leaf erectness) could have significant impact on yield across the rainfall zones of WA. In other crops like rice and corn, an erect leaf canopy has significantly increased yield by 20% or more. We believe this change in canopy architecture might have implications for improving wheat yield and that leaf erectness may be a useful trait for future breeding.Conducted on yellow sand in Moora, this experiment was designed to test the effect of wheat canopy architecture on wheat yield.