| Researcher(s) |
Barry Haskins Eric Koetz Rachael Whitworth |
|---|---|
| Year(s) | 2015 |
| Contributor | Ag Grow Agronomy and Research Pty Ltd |
| Trial location(s) |
Barellan, NSW
|
This experiment is one in a series of nitrogen experiments aimed at establishing variety responses to different nitrogen application rates and timings.
Key findings
ï‚· Sowing time had a huge effect on grain yield.
ï‚· Delaying sowing time reduced grain yield, TOS 1 yielded 4.84 t/ha and TOS 2 yielded 3.55 t/ha.
ï‚· Suntop was the highest yielding variety, 4.47 t/ha.
ï‚· Lancer was the lowest yielding variety, 3.73 t/ha.
ï‚· Given profitability and return on investment 40 kg N/ha at sowing was the ideal rate of nitrogenSowing time had a huge effect on grain yield.
Delaying sowing time reduced grain yield in all varieties across all nitrogen treatments.The effect of nitrogen varied between the two sowing times. The ideal target rate of nitrogen, given profitability and return on investment was 40 kg N/ha.
| Lead research organisation |
Ag Grow Agronomy and Research Pty Ltd |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC DAN00129 |
| Trial funding source | DPI NSW |
| Related program | N/A |
| Acknowledgments |
This trial was conducted by Ag Grow Agronomy and Research and VSAP. The VSAP project is funded by NSW DPI and GRDC under the Variety Specific Agronomy Package Project (DAN00129). The contributions of Jeff Savage “Mayfield”, Barellan in conducting this trial is gratefully acknowledged. |
| Other trial partners | Jeff Savage |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Replicated |
| Sowing machinery |
Tractor pulled Morris contour drill parallelogram cone seede |
|---|---|
| Sow date | TOS1: 30/04/2015, TOS2: 26/05/2015 |
| Harvest date | 19 November 2015 |
| Plot size | Not specified |
| Plot replication | Not specified |
| Fertiliser |
Saterter Fertiliser: 60kg/ha MAP ï‚· 2 Nitrogen timings
ï‚· 5 nitrogen rates
|
| Herbicide |
Knockdown - R'up + Ester sprayed Pre-emergent - 2.5 L Boxer Gold + 1.6L Avadex Post-emergent - 300ml Axial + 800ml MCPA 750 + 100g Lontrel + 1% Adigor |
| Fungicide |
150ml Prosaro (end July) 400ml Amistar Xtra (early September) |
| Rainfall trial gsr (mm) | 273mm |
|---|
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to
construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol
16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.
