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

2015

Research organisatons
Funding source

Trial details

Researcher(s) Nick Poole and Michael Straight (FAR Australia)
Year(s) 2015
Contributor Riverine Plains
Trial location(s) Barooga, NSW
Site 3, 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 Wheat
Treatment type(s)
  • Sowing: Row spacing
  • Variety: Type
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

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

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

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

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

Grain yield t/ha


Loading

Dry matter biomass kg DM/ha


Loading

Establishment plants plants/m2


Loading

Harvest index value


Loading

Hectolitre weight kg/hL


Loading

Protein %


Loading

Screenings %


Loading

Total water use mm


Loading

Transpiration efficiency kg/ha/mm


Loading

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

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

Grain yield t/ha


Loading

Establishment plants plants/m2


Loading

Hectolitre weight kg/hL


Loading

Protein %


Loading

Screenings %


Loading

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

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

Grain yield t/ha


Loading

Dry matter biomass kg DM/ha


Loading

Establishment plants plants/m2


Loading

Harvest index value


Loading

Hectolitre weight kg/hL


Loading

Protein %


Loading

Screenings <2mm %


Loading

Total water use mm


Loading

Transpiration efficiency kg/ha/mm


Loading

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

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

Grain yield t/ha


Loading

Establishment plants plants/m2


Loading

Hectolitre weight kg/hL


Loading

Protein %


Loading

Screenings <2mm %


Loading
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Barooga, NSW Not specified
Site 3, Yarrawonga, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Barooga, NSW Sodosol
Site 3, Yarrawonga, VIC Sodosol
National soil grid Source
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

Loading

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

Site 3, Yarrawonga VIC

Barooga VIC

Loading
Loading
Loading

Site 3, Yarrawonga VIC

Loading
Loading
Loading

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 last modified: 28-11-2019 11:00am AEST