Durum wheat variety response to nitrogen management and sowing time - Tamarang 2015

2015

Research organisaton
Funding source

Trial details

Researcher(s) Michael Dal Santo (NSW DPI)
Rick Graham (NSW DPI)
Stephen Morphett (NSW DPI)
Jim Perfrement (NSW DPI)
Year(s) 2015
Contributor Department of Primary Industries NSW
Trial location(s) Tamarang, NSW
Durum wheat variety response to nitrogen management and sowing time - Tamarang 2015 locations
Aims

To compare variety response to time of sowing (TOS) and nitrogen (N) management to develop variety recommendations and tactical agronomy guidelines. 

Key messages
  • Durum varieties (CaparoiA, DBA AuroraA, DBA LillaroiA and JandaroiA) displayed differential grain quality and yield responses to time of sowing (TOS) and nitrogen (N) management. Increased screenings (>5%) were the most common cause of quality downgrades.
  • DBA AuroraA, due to increased risk of screenings (>5%) in part because of reduced grain size, would appear to offer less flexibility in terms of agronomic management, specifically delayed sowing and N management.
  • The newly released Northern Durum breeding program variety DBA LillaroiA appears to offer excellent grain size and grain stability, achieving low screenings from a delayed sowing and high N rates.
  • Results also highlight the need to sow varieties within recommended sowing windows. An earlier than recommended sowing date of May 19 for the Liverpool Plains resulted in yield losses of ~25% averaged across N treatments for earlier maturing varieties such as JandaroiA and DBA LillaroiA, with possible grain quality implications (e.g. increased screenings).
Lead research organisation Department of Primary Industries NSW
Host research organisation N/A
Trial funding source GRDC DAN00167
Related program Variety Specific Agronomy Packages for southern, central and northern NSW
Acknowledgments

This research was co-funded by NSW DPI and GRDC under project DAN00167: Variety Specific Agronomy Packages for southern, central and northern NSW. Thanks to David Ronald for hosting the trial site. Technical assistance provided by Jan Hosking, Peter Formann, Rod Bambach and Richard Morphett (all NSW DPI) is also gratefully acknowledged.


Other trial partners Co-operator: David Ronald
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Crop: Variety
  • Sowing: Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Tamarang 2015

Sow date 19 May 2015 19 May 2015 (TOS 1) and 9 July 2015 (TOS 2)
Harvest date 30 November 2015 30 November 2015 (TOS 1) and 7 December 2015 (TOS 2)
Plot size Not specified
Plot replication Not specified
Fertiliser

70 kg/ha Granulock Z extra at planting

Other trial notes

Treatments

Durum wheat:

Four commercially released varieties CaparoiA, DBA AuroraA, DBA LillaroiA and JandaroiA, and an advanced breeder’s line from the Northern Durum breeding program 190873 in a fully replicated, factorial design with six N treatments in total.

Nitrogen (N) rate:

0, 40, 80, 120 kg N/ha and two split applications 2 × 40 kg N/ha either at sowing and GS31 or at sowing and GS39, all applied as urea (46% N). All treatments were side banded at sowing, apart from the split applications, which had half applied at planting and half at stem elongation (GS31) or at flag leaf emergence (GS39) (total 80 kg N/ha).

Sowing date:

19 May and 9 July, in a split plot design with three replicates.

 

Download the trial report to view additional method/treatment information

Download results

Trial results Mean varietal grain yield (t/ha) averaged across nitrogen treatments for two times of sowing

@T1: TOS 1 (19-05-2015) @T2: TOS 2 (09-07-2015)
# Variety
Grain yield (t/ha) Grain yield (t/ha)
1 Caparoi 6.36 6.17
1 Caparoi 5.23 6.36
2 190873 5.11 6
2 190873 4.94 6.58
3 DBA Aurora 4.75 6.26
3 DBA Aurora
4 DBA Lillaroi
4 DBA Lillaroi
5 Jandaroi
5 Jandaroi

Grain yield t/ha


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Trial results Effect of variety on growth parameters

# Variety
Protein (%) Grain yield (t/ha) 1000 grain weight (g) Screenings (%) Test weight (kg/hL)
1 Caparoi 13.8 6.17 36 4 84.7
2 190873 14.1 6.36 36 3.9 85.1
3 DBA Aurora 13.5 6 33 7.9 82.9
4 DBA Lillaroi 14.6 6.58 41 3 84.9
5 Jandaroi 14.7 6.26 36.7 3.4 84.2

Grain yield t/ha


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1000 grain weight g


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Protein %


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Screenings %


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Test weight kg/hL


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Tamarang, NSW Vertisol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Tamarang, NSW Vertosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Tamarang NSW
2015 308.1mm
2014 258.1mm
2013 298.5mm
2012 313.1mm
2011 324.7mm
2010 375.5mm
2009 328.9mm
2008 354.0mm
2007 323.5mm
2006 294.5mm
2005 364.5mm
2004 383.8mm
2003 349.4mm
2002 266.4mm
2001 327.0mm
2000 298.4mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Tamarang NSW

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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Some data on this site is sourced from the Bureau of Meteorology

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.

Trial report and links

2015 trial report



Trial last modified: 23-09-2019 13:19pm AEST