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Early sowing and the interaction with row spacing and variety in first wheat crops under full stubble retention

2015

Research organisations
Funding source
Riverine Plains Commonwealth Scientific and Industrial Research Organisation
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Nick Poole (FAR Australia)
Michael Straight (FAR Australia)
Year(s) 2015
Contributor Riverine Plains
Trial location(s) Barooga, NSW
Yarrawonga, VIC
Early sowing and the interaction with row spacing and variety in first wheat crops under full stubble retention locations
Aims

To investigate the interaction between early sowing and row spacing and variety in first wheat crops under full stubble retention.

Key messages
  • Two wheat trials sown during mid-April 2015 showed no difference in grain yield or quality as a result of being grown on 22.5cm, 30cm and 37.5cm row spacings, when averaged across four varieties.
  • Although crops grown on a 22.5cm row spacing produced more dry matter (DM), this did not correspond to increased yield.
  • The results were identical to that seen with wheat sown in mid-April 2014.
  • There were no differences in yields of the four wheat varieties, although Bolac produced higher screenings than the other three varieties in both trials.
  • There was no difference in the overall water use efficiency (WUE) between narrow and wide row spacing, although calculated water losses (soil evaporation, drainage or unused water) were greater with wide spacing than the narrow spacing.
Lead research organisation Commonwealth Scientific and Industrial Research Organisation
Host research organisation N/A
Trial funding source GRDC RPI00009
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

Thanks to the farmer co-operators, J and S Bruce (Barooga, NSW) and Telewonga Pty Ltd (Yarrawonga, Vic).
Other trial partners Not specified
Download the trial report to view additional trial information

Method

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

Barooga 2015

Sow date 15 April 2015
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Herbicide

host farmer paddock management
Insecticide

host farmer paddock management
Fungicide

host farmer paddock management
Other trial notes

GSR (Apr-Oct)

Barooga 2015

Sow date 15 April 2015
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Herbicide

host farmer paddock management
Insecticide

host farmer paddock management
Fungicide

host farmer paddock management
Other trial notes

GSR (Apr-Oct)

Yarrawonga 2015

Sow date 15 April 2015
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Herbicide

host farmer paddock management
Insecticide

host farmer paddock management
Fungicide

host farmer paddock management
Other trial notes Not specified

Yarrawonga 2015

Sow date 15 April 2015
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Herbicide

host farmer paddock management
Insecticide

host farmer paddock management
Fungicide

host farmer paddock management
Other trial notes Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Effect of row spacing on grain and crop growth at Barooga in 2015

# Treatment 1
Establishment plants (plants/m2) Harvest index (value) Hectolitre weight (kg/hL) Protein (%) Screenings (%) Grain yield (t/ha) Dry matter biomass (kg DM/ha) Total water use (mm) Transpiration efficiency (kg/ha/mm)
1 █ 9" row spacing 110 36.1 77.2 9.8 7.1 4.17 10.27 186.7 19.8
2 █ 12" row spacing 127 40.3 11.8 9.6 6.7 4.2 9.23 167.8 22.1
3 █ 15" row spacing 112 44.6 77.4 9.9 7.1 4.23 8.46 153.8 24.5

Grain yield t/ha

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Dry matter biomass kg DM/ha

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Establishment plants plants/m2

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Harvest index value

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Hectolitre weight kg/hL

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Protein %

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Screenings %

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Total water use mm

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Transpiration efficiency kg/ha/mm

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Trial results Effect of variety on grain and crop growth at Barooga in 2015

# Variety
 Establishment plants (plants/m2) Hectolitre weight (kg/hL) Protein (%) Screenings (%) Grain yield (t/ha)
1 █ Wedgetail 113 76.7 9.6 5.3 3.91
2 █ Bolac 113 76 9.7 11.9 4.18
3 █ Lancer 116 79 10.3 5.1 4.28
4 █ Trojan 123 78.2 9.5 5.7 4.44

Grain yield t/ha

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Establishment plants plants/m2

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Hectolitre weight kg/hL

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Protein %

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Screenings %

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Trial results Effect of row spacing on grain and crop growth at Yarrawonga in 2015

# Establishment plants (plants/m2) Harvest index (value) Hectolitre weight (kg/hL) Protein (%) Grain yield (t/ha) Screenings <2mm (%) Dry matter biomass (kg DM/ha) Total water use (mm) Transpiration efficiency (kg/ha/mm)
1 █ 9" row spacing 171 30.8 75.7 13 3.33 19.3 9.49 172.5 17
2 █ 12" row spacing 158 33.2 75.7 13.3 3.22 19.2 8.49 154.4 18.3
3 █ 15" row spacing 162 34.2 75.4 13.7 3.25 20.5 8.42 153.1 18.8

Grain yield t/ha

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Dry matter biomass kg DM/ha

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Establishment plants plants/m2

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Harvest index value

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Hectolitre weight kg/hL

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Protein %

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Screenings <2mm %

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Total water use mm

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Transpiration efficiency kg/ha/mm

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Trial results Effect of variety on grain and crop growth at Yarrawonga in 2015

# Variety
 Establishment plants (plants/m2) Hectolitre weight (kg/hL) Protein (%) Grain yield (t/ha) Screenings <2mm (%)
1 █ Wedgetail 155 74.3 13.8 3.23 17.7
2 █ Bolac 165 74.3 13.3 3.32 30.9
3 █ Lancer 156 78 13.5 3.28 10.5
4 █ Trojan 178 75.8 12.7 3.25 19.5

Grain yield t/ha

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Establishment plants plants/m2

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Hectolitre weight kg/hL

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Protein %

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Screenings <2mm %

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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Barooga, NSW Not specified
Yarrawonga, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Barooga, NSW Sodosol
Yarrawonga, 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 Barooga NSW Yarrawonga VIC
2015
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Climate

Barooga NSW 2015

Observed climate information

Rainfall trial gsr (mm) 201mm

Barooga NSW 2015

Observed climate information

Rainfall trial gsr (mm) 201mm

Derived climate information

Barooga VIC

Yarrawonga VIC

Barooga VIC

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Yarrawonga 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

2015 trial report



Trial last modified: 28-11-2019 12:00pm AEST