Researcher(s) |
Brendan Wallis |
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Contact email | charlie.aves@irrigatedcroppingcouncil.com.au |
Contact phone | 0416400979 |
Year(s) | 2021 |
Contributor | Irrigated Cropping Council |
Trial location(s) |
Frances 2021,
|
Different nitrogen rates and application timings will be examined to determine which management approach can maximise yield without compromising the end market.
The intention is to observe how such treatments impact yield and grain quality of irrigated barley.
Following a lucerne crop, the crop was responsive to additional nitrogen inputs. With a background soil nitrogen level of 66kg N/ha, we were able to maximise yield with only the addition N. We saw a significant improvement in yield with the application of 46kg N/ha, however, applications above this were insignificant.
The addition of nitrogen also influenced grain quality. The most dramatic response was the increase in grain screenings with the increasing rates as well as the increasing grain protein with the increased rates of nitrogen.
We struggled to find any standout significant differences with the application timings. Whilst not significant, the plots that received nitrogen at GS00 and GS31 did appear to perform better and showed greater levels of vigour.
Lead research organisation |
Irrigated Cropping Council |
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Host research organisation |
MacKillop Farm Management Group |
Trial funding source | GRDC ICF1906-002RTX |
Related program | N/A |
Acknowledgments |
SARDI for sowing, harvesting, incrop management and quality analysis of the trial Circle H farms, Wayne Hawkins as cooperating growers |
Other trial partners | Pinion Advisory |
Crop type | Cereal (Grain): Barley |
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Treatment type(s) |
|
Trial type | Experimental |
Trial design | Replicated |
Sow date | 20 May 2021 |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Psuedoreplication | Not specified |
Fertiliser |
Treatment variables were nitrogen rates and application timings. The different timings of application consisted of at seeding (GS00), first node (GS31) and flag leaf (GS37) different combinations were used at different rates to see where we can optimise grain yield and quality. Nitrogen rate was the other variable. We used 4 different rates. 46kg of N per ha, 92 kg of N per ha, 138 kg of N per ha and 184 kg of N per ha. We also had 0kg of N per ha as a control. |
Herbicide |
Applied to all plots: 20-May-2021: Roundup PowerMAX - 2l, Goal - 75ml, Overwatch - 1.25l 10-Aug-2021: Starance Advanced - 300ml, Triathlon - 750ml
|
Insecticide |
Applied to all plots: 20-May-2021: Lorsban 500EC - 500ml 10-Aug-2021: Alpha Duo - 125ml 16-Sep-2021: Karate Zeon - 30ml |
Fungicide |
Applied to all plots: 10-Aug-2021: Aviator Xpro - 400ml 16-Sep-2021: Aviator Xpro - 400ml |
Pesticide |
Applied to all plots: 20-May-2021: Metarax - 5kg, Mouseoff Zinc Prosphide bait - 1kg
|
Seed treatment | 150ml/100kg seed Systiva + 240ml Gaucho 600 Red Flowable |
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.
Event | Date | Type | Effect |
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Frost events The trial experienced frost events on the following dates: -1.5 °C on Jul 9, -2.4 °C on Jul 10, -0.2 °C on Jul 21, -0.6 °C on Aug 27, -0.7 °C on Sep 5, -1.2 °C on Sep 14, -0.9 °C on Sep 16, -1.8 °C on Sep 26, -0.1 °C on Oct 10, -2.1 °C on Oct 11, -1.2 °C on Oct 12, -0.3 °C on Oct 25, -0.5 °C on Oct 30 |
09-07-2021 | Mild frost | N/A |
Heat This trial experienced extreme heat conditions on the following dates: 33.7 °C on Nov 2, 34 °C on Nov 5, 34.6 °C on Nov 18, 33.5 °C on Nov 22, 33 °C on Nov 24, 33.9 °C on Nov 28, 37.6 °C on Nov 29, 39.9 °C on Nov 30, 40.2 °C on Dec 1 |
02-11-2021 | Heat event | N/A |