Title: Relationships between grain yield, grain N%, and grain weight in irrigated and non-irrigated late winter- and spring-sown Karamu wheat
Abstract: Abstract Five experiments were carried out on Lismore stony silt loam, using the borderstrip method of irrigation. Correlation coefficients for the 3 relationships were highly significant; grain N% decreased with grain yield (r = -0.96) and with grain (kernel) weight (r = -0.88) and grain yield increased with grain weight (r = 0.89). Irrigation increased grain yield and grain weight, but there was no significant difference between irrigating at 10% soil moisture and irrigating at 15% soil moisture. Grain N% was heavily reduced by irrigating at 10% and further reduced by irrigating at 15% soil moisture. Most of the grain samples from irrigated strips were not of acceptable milling standard.