Performance of first wheat under no-till full stubble retention (NTSR) using in-crop nitrogen, plant population and row spacing in the Riverine Plains region

2013

Research organisatons
Funding source

Trial details

Researcher(s) Nick Poole and Tracey Wylie (FAR Australia)
Year(s) 2013
Contributor Riverine Plains
Trial location(s) Site 3, Yarrawonga, VIC
Performance of  first wheat under no-till full stubble retention (NTSR) using in-crop nitrogen, plant population and row spacing in the Riverine Plains region locations
Aims

To evaluate the performance of different in-crop nitrogen treatments and plant populations at a range or row spacings in first wheat following canola.

Key messages
  • First wheat following canola yielded between 3.65 and 5.35t/ha depending on row spacing, plant population and nitrogen application.
  • A narrow row spacing of 22.5cm produced higher dry matter (DM), grain yields and water use efficiency than a wider row spacing of 37.5cm.
  • Higher grain yields were associated with plant populations of 150-165 plants/m2.
  • Wide row spacing reduced grain yields by and average of 6.5% and DM by 15% compared with narrow row spacing. 
Lead research organisation Commonwealth Scientific and Industrial Research Organisation
Host research organisation N/A
Trial funding source GRDC RP100007
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

Thanks to farmer co-operators, the Inchbold family, and Agrisearch as the principal trial contractor.


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

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Method
  • Sowing: Row spacing
Trial type Experimental
Trial design Replicated

Yarrawonga 2013

Sow date 15 May 2013
Harvest date Not specified
Plot size 16m x 2m
Plot replication 4
Herbicide

host farmer paddock management

Insecticide

host farmer paddock management

Fungicide

host farmer paddock management

Yarrawonga 2013

Sow date 15 May 2013
Harvest date Not specified
Plot size 16m x 2m
Plot replication 4
Herbicide

host farmer paddock management

Insecticide

host farmer paddock management

Fungicide

host farmer paddock management

Yarrawonga 2013

Sow date 15 May 2013
Harvest date Not specified
Plot size 16m x 2m
Plot replication 4
Herbicide

host farmer paddock management

Insecticide

host farmer paddock management

Fungicide

host farmer paddock management

Yarrawonga 2013

Sow date 15 May 2013
Harvest date Not specified
Plot size 16m x 2m
Plot replication 4
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 plant population (row spacing) on grain yield and plant establishment at Yarrawonga 2013

# Treatment 1
Treatment 2
Treatment 3
Establishment plants (plants/m2) Grain yield (t/ha)
1 100 (target) 9” row spacing No N 167 3.93
2 100 (target) 9” row spacing Seedbed 163 4.85
3 100 (target) 9” row spacing GS30-31 159 4.93
4 100 (target) 9” row spacing 50:50 Split 164 5
5 200 (target) 9” row spacing No N 272 3.9
6 200 (target) 9” row spacing Seedbed 273 4.68
7 200 (target) 9” row spacing GS30-31 270 4.8
8 200 (target) 9” row spacing 50:50 Split 269 4.83
9 100 (target) 15” row spacing No N 96 3.65
10 100 (target) 15” row spacing Seedbed 88 4.55
11 100 (target) 15” row spacing GS30-31 87 4.3
12 100 (target) 15” row spacing 50:50 Split 86 4.38
13 200 (target) 15” row spacing No N 152 3.7
14 200 (target) 15” row spacing Seedbed 157 4.68
15 200 (target) 15” row spacing GS30-31 151 4.58
16 200 (target) 15” row spacing 50:50 Split 146 4.83

Grain yield t/ha


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Establishment plants plants/m2


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Trial results Effect of row spacing grain yield, water use and biomass at Yarrawonga 2013

# Transpiration efficiency (kg/ha/mm) Harvest index (value) Dry matter biomass (kg DM/ha) Total water use (mm) Grain yield (t/ha)
1 9” 21.4 39 10369 15.9 4.04
2 15” 23.6 43 8833 14.9 3.79

Grain yield t/ha


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Dry matter biomass kg DM/ha


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Harvest index value


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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 plant density on grain yield, water use and biomass at Yarrawonga 2013

# Transpiration efficiency (kg/ha/mm) Harvest index (value) Dry matter biomass (kg DM/ha) Total water use (mm) Grain yield (t/ha)
1 100 (target) 21.8 40 9807 15.3 3.89
2 200 (target) 23 42 9394 15.5 3.94

Grain yield t/ha


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Dry matter biomass kg DM/ha


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Harvest index value


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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 nitrogen strategy on grain yield, water use and biomass at Yarrawonga 2013

# Transpiration efficiency (kg/ha/mm) Harvest index (value) Dry matter biomass (kg DM/ha) Total water use (mm) Grain yield (t/ha)
1 No N 19.8 36 9202 13.1 3.32
2 Seedbed 22.7 41 9947 16.1 4.1
3 GS30-31 22.7 41 9873 16 4.07
4 50:50 Split 22 40 10407 16.4 4.16

Grain yield t/ha


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Dry matter biomass kg DM/ha


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Harvest index value


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Total water use mm


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Transpiration efficiency kg/ha/mm


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 3, Yarrawonga, VIC Loamy clay
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
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

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Climate

Site 3, Yarrawonga VIC 2013


Observed climate information

Rainfall trial gsr (mm) 222mm

Site 3, Yarrawonga VIC 2013


Observed climate information

Rainfall trial gsr (mm) 222mm

Site 3, Yarrawonga VIC 2013


Observed climate information

Rainfall trial gsr (mm) 222mm

Site 3, Yarrawonga VIC 2013


Observed climate information

Rainfall trial gsr (mm) 222mm

Derived climate information

Site 3, 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 last modified: 28-11-2019 12:05pm AEST