Strategic nitrogen management for western no–till farming systems on Vertosols

Abstract

Key findings • 80 units N/ha drilled at sowing had the highest response (P<0.001) in protein 12.6% at ‘Eulengo’ and 11.2% at ‘Bridgewater’ compared to the control 8.5% and 8.7%, respectively. • Liquid run Urea (4.3 t/ha), pre drilled Urea (4.6 t/ha), root zone injection (4.2 t/ha) and broadcast Urea (4.5 t/ha) at 80 units N/ha produced the highest yields (P <0.001) at ‘Bridgewater’ when compared to the control (3.9 t/ha). • Pre drilled Urea (3.3 t/ha) 40 and 80 units N/ha produced the highest yield (P < 0.001) at ‘Eulengo’ when compared to all other treatments. (Control 2.5 t/ha). • There were no N-response differences in protein or yield between EGA Gregory[PBR] and Livingston[PBR] at either ‘Bridgewater’ or ‘Eulengo’.