Examining the influence of plant population, nitrogen timing and rate on the yield of wheat crop canopies

2004
CC BY 4.0

Research organisaton
Funding source

Trial details

Researcher(s) Dominic Bolton (SFS)
Colin Hacking (FAR NZ)
Nick Poole (FAR NZ)
Year(s) 2004
Contributor Southern Farming Systems
Trial location(s) Inverleigh, VIC
Examining the influence of plant population, nitrogen timing and rate on the yield of wheat crop canopies locations
Aims

The background and objectives for this trial are identical to those set out for the MacKellar trial, though the variety Kellalac gives the opportunity of looking at the influence of plant population, nitrogen timing and nitrogen rate on a spring APW wheat as opposed to a winter feed wheat.

Key messages

Averaged over all nitrogen treatments, there was no statistical difference between the 2 different plant populations in terms of yield or quality parameters, however the trends were identical to MacKellar: lower plant population 108 plants/m2 giving slightly lower yield (0.25 tlha) and higher protein.

Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC SFS00006
Related program N/A
Acknowledgments

The authors would like to place on record their grateful thanks to the GRDC for funding this work.


Other trial partners Not specified
Download the trial report to view additional trial information

Method

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

Inverleigh 2004

Sow date 10 June 2004
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2004

Sow date 10 June 2004
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Inverleigh results

# Variety
Treatment 1
Protein (%) Grain yield (t/ha)
1 Kellalac 9. 50% N GS30/31 + 50% N GS39 150 kg N/ha; 191 plants/m2 14.5 3.21
2 Kellalac 9. 50% N GS30/31 + 50% N GS39 150 kg N/ha; 108 plants/m2 14.8 2.78
3 Kellalac 8. 100% N GS39 150 kg N/ha; 191 plants/m2 14.1 3.14
4 Kellalac 8. 100% N GS39 150 kg N/ha; 108 plants/m2 14.3 2.91
5 Kellalac 7. 100% N GS30/31 150 kg N/ha; 191 plants/m2 14.5 3.05
6 Kellalac 7. 100% N GS30/31 150 kg N/ha; 108 plants/m2 14.5 2.8
7 Kellalac 6. 50% N GS00 + 50% N GS30/31 150 kg N/ha; 191 plants/m2 15.1 2.99
8 Kellalac 6. 50% N GS00 + 50% N GS30/31 150 kg N/ha; 108 plants/m2 15 2.79
9 Kellalac 5. 50% N GS30/31 + 50% N GS39 75 kg N/ha; 191 plants/m2 12.5 3.12
10 Kellalac 5. 50% N GS30/31 + 50% N GS39 75 kg N/ha; 108 plants/m2 12.5 2.8
11 Kellalac 4. 100% N GS39 75 kg N/ha; 191 plants/m2 11.7 3
12 Kellalac 4. 100% N GS39 75 kg N/ha; 108 plants/m2 12.8 2.64
13 Kellalac 3. 100% N GS30/31 75 kg N/ha; 191 plants/m2 12.3 3.05
14 Kellalac 3. 100% N GS30/31 75 kg N/ha; 108 plants/m2 12.9 2.76
15 Kellalac 2. 50% N GS00 + 50% N GS30/31 75 kg N/ha; 191 plants/m2 12.6 3.16
16 Kellalac 2. 50% N GS00 + 50% N GS30/31 75 kg N/ha 108 plants/m2 12.9 2.87
17 Kellalac 1. Zero N (Control); 191 plants/m2 9.8 2.73
18 Kellalac 1. Zero N (Control) 108 plants/m2 10 2.69

Grain yield t/ha


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Protein %


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Trial results Inverleigh results for plant population

# Variety
Protein (%) Grain yield (t/ha)
1 Mackellar 9. 50% N GS30/31 + 50% N GS39 150 kg N/ha; 208 plants/m2 12.4 3.52
2 Mackellar 9. 50% N GS30/31 + 50% N GS39 150 kg N/ha; 122 plants/m2 11.3 3.2
3 Mackellar 8. 100% N GS39 150 kg N/ha; 208 plants/m2 12.7 3.43
4 Mackellar 8. 100% N GS39 150 kg N/ha; 122 plants/m2 12.8 3.13
5 Mackellar 7. 100% N GS30/31 150 kg N/ha; 208 plants/m2 11.5 3.6
6 Mackellar 7. 100% N GS30/31 150 kg N/ha; 122 plants/m2 12 3.06
7 Mackellar 6. 50% N GS00 + 50% N GS30/31 150 kg N/ha; 208 plants/m2 12.6 3.53
8 Mackellar 6. 50% N GS00 + 50% N GS30/31 150 kg N/ha; 122 plants/m2 13 3.55
9 Mackellar 5. 50% N GS30/31 + 50% N GS39 75 kg N/ha; 208 plants/m2 10.9 3.56
10 Mackellar 5. 50% N GS30/31 + 50% N GS39 75 kg N/ha; 122 plants/m2 10.8 2.99
11 Mackellar 4. 100% N GS39 75 kg N/ha; 208 plants/m2 11.1 3.14
12 Mackellar 4. 100% N GS39 75 kg N/ha; 122 plants/m2 11.7 3.44
13 Mackellar 3. 100% N GS30/31 75 kg N/ha; 208 plants/m2 10.2 3.36
14 Mackellar 3. 100% N GS30/31 75 kg N/ha; 122 plants/m2 11.2 3.23
15 Mackellar 2. 50% N GS00 + 50% N GS30/31 75 kg N/ha; 208 plants/m2 10.8 3.62
16 Mackellar 2. 50% N GS00 + 50% N GS30/31 75 kg N/ha; 122 plants/m2 11.1 3.55
17 Mackellar 1. Zero N (Control); 208 plants/m2 8.4 3.16
18 Mackellar 1. Zero N (Control); 122 plants/m2 9 3.05

Grain yield t/ha


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Protein %


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Inverleigh, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Inverleigh, VIC Sodosol
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 Inverleigh VIC
2004 438.6mm
2003 416.4mm
2002 399.6mm
2001 472.4mm
2000 448.5mm
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.

Inverleigh VIC

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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

2004 trial report

2004 trial report



Trial last modified: 18-11-2019 09:20am AEST