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

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 second wheat under no-till full stubble retention (NTSR) using in-crop nitrogen, plant population and row spacing in the Riverine Plains regionia locations
Aims

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

Key messages
  • Wheat on wheat sown 15 May 2013 yielded between 3.35 and 4.70t/ha depending on row spacing, plant population and nitrogen application.
  • The narrow row spacing (22.5cm) produced the same yield and water use efficiency (WUE) as the wider row spacing (37.5cm).
  • There was no difference in dry matter (DM) at harvest and grain yield due to plant population, though the lower plant population produced grain with significantly higher protein levels.
  • Wider-row-spaced crops produced significantly higher protein than narrow-row crops, though there was no difference in yield.
  • Wide row spacing significantly reduced DM compared with narrow row spacing at all assessments from tillering onwards until harvest when the difference was not statistically significant.
  • This result is in contrast to the first wheat after canola, where the wider row spacing (37.5cm) yielded less and had lower WUE compared with the narrower rows.
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 Randomised,Replicated,Blocked

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 density on grain yield, water use and biomass in second wheat at Yarrawonga 2013

# Treatment 1
Grain yield (t/ha) Total water use (mm) Harvest index (value) Dry matter biomass (kg DM/ha) Transpiration efficiency (kg/ha/mm)
1 100 (target) 3.49 13.7 40 8631 157
2 200 (target) 3.54 13.9 41 8721 159

Grain yield t/ha


Loading

Dry matter biomass kg DM/ha


Loading

Harvest index value


Loading

Total water use mm


Loading

Transpiration efficiency kg/ha/mm


Loading

Trial results Effect of nitrogen strategy on grain yield, water use and biomass in second wheat at Yarrawonga 2013

# Grain yield (t/ha) Total water use (mm) Harvest index (value) Dry matter biomass (kg DM/ha) Transpiration efficiency (kg/ha/mm)
1 No N 3 11.8 39 7789 142
2 Seedbed 3.61 14.2 40 9019 164
3 GS30-31 3.7 14.6 42 8918 162
4 50:50 Split 3.76 14.8 42 8978 163

Grain yield t/ha


Loading

Dry matter biomass kg DM/ha


Loading

Harvest index value


Loading

Total water use mm


Loading

Transpiration efficiency kg/ha/mm


Loading

Trial results Effect of plant population (row spacing) on grain yield and plant establishment in second wheat at Yarrawonga 2013

# Grain yield (t/ha) Establishment plants (plants/m2)
1 100 (target) 9” row spacing No N 3.57 129
2 100 (target) 9” row spacing Seedbed 4.14 136
3 100 (target) 9” row spacing GS30-31 4.31 128
4 100 (target) 9” row spacing 50:50 Split 4.25 129
5 200 (target) 9” row spacing No N 3.45 216
6 200 (target) 9” row spacing Seedbed 4.18 225
7 200 (target) 9” row spacing GS30-31 4.23 209
8 200 (target) 9” row spacing 50:50 Split 4.39 229
9 100 (target) 15” row spacing No N 3.29 103
10 100 (target) 15” row spacing Seedbed 4.02 106
11 100 (target) 15” row spacing GS30-31 4.12 104
12 100 (target) 15” row spacing 50:50 Split 4.27 95
13 200 (target) 15” row spacing No N 4.14 167
14 200 (target) 15” row spacing Seedbed 4.16 166
15 200 (target) 15” row spacing GS30-31 4.28 166
16 200 (target) 15” row spacing 50:50 Split 4.28 180

Grain yield t/ha


Loading

Establishment plants plants/m2


Loading

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

# Grain yield (t/ha) Total water use (mm) Harvest index (value) Dry matter biomass (kg DM/ha) Transpiration efficiency (kg/ha/mm)
1 9” 3.56 14 39 9010 164
2 15” 3.48 13.7 42 8342 152

Grain yield t/ha


Loading

Dry matter biomass kg DM/ha


Loading

Harvest index value


Loading

Total water use mm


Loading

Transpiration efficiency kg/ha/mm


Loading
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

Loading

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

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 12:55pm AEST