Key Points
- On four dryland trials over two seasons, delaying N until GS32 (mid-October) has produced less dense crops, with a trend to increased yields – even with the 03/04 hot dry finish.
- Over two seasons delayed application of ‘yield N’ until GS32 has increased proteins by 0.51.5%, consequently improving margins.
- 2/3 of N at GS32, and 1/3 of total N at GS39 provides the best compromise between yield, protein and climate risk. Add 40kg N/ha at GS59 if soil moisture is favourable.
- Less dense crop canopies are likely to have less disease, less likely to lodge, use less soil moisture early season, and have less in-crop competition for soil moisture and nutrients.