Time of sowing and ryegrass managements

2014
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Blake Gontar (SARDI), Andrew Ware (SARDI)
Year(s) 2014
Contributor Lower Eyre Agricultural Development Association
Trial location(s) Site 3, Wanilla, SA
Site 3, Yeelanna, SA
Time of sowing and ryegrass managements locations
Aims

To investigate proactive non-herbicide management strategies for reducing ryegrass seed set and so 'run down' the seed bank.

Key messages
  • Early sowing of barley may be an effective way of controlling ryegrass growth and limiting seed set.
  • Results in wheat are more variable than for barley: at Wanilla, mid-May seemed the optimal time of sowing to reduce ryegrass with less effect obvious at Yeelanna.
  • Higher seeding rates also followed the same trend, with little ryegrass suppression benefit seen in wheat but a benefit evident in barley.
  • Increasing seeding rate did not improve wheat yields significantly however barley (Fleet) did seem to benefit from higher seeding rates when sown late (mid-June).
Lead research organisation Grains Research and Development Corporation
Host research organisation N/A
Trial funding source GRDC LEA00002
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

Thankyou to the Puckridge family for hosting the site


Other trial partners SARDI
Download the trial report to view additional trial information

Method

Crop types Barley
Wheat
Treatment type(s)
  • Crop: Type
  • Sowing: Rate
  • Sowing: Timing
  • Variety: Type
Trial type Experimental
Trial design Replicated

Wanilla 2014 Barley

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Herbicide Not specified
Fungicide Not specified

Wanilla 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Herbicide Not specified
Fungicide Not specified

Yeelanna 2014 Barley

Sow rate or Target density 150 and 250 plants/m2
Sow date 5 May 2014 5 May, 16 May and 11 June 2014
Harvest date 27 November 2014
Plot size 68m x 48m
Plot replication 3
Fertiliser

100kg/ha 18:20 N:P

Herbicide

Glyphosate and Sakura per normal farmer practice

Fungicide

400mL/ha Impact

Yeelanna 2014 Wheat

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Herbicide Not specified
Fungicide Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Yeelanna

# Variety
Treatment 1
Treatment 2
Treatment 3
Grain yield (t/ha) Ryegrass density (plants/m2)
1 Fleet Barley 150/m2 5 May 3.07 2.5
2 Fleet Barley 150/m2 16 May 3.44 27.5
3 Fleet Barley 150/m2 11 June 1.53 215
4 Fleet Barley 250/m2 5 May 3.37 3.33
5 Fleet Barley 250/m2 16 May 3.62 2.5
6 Fleet Barley 250/m2 11 June 2.43 60.83
7 Mace Wheat 150/m2 5 May 3.18 19.17
8 Mace Wheat 150/m2 16 May 2.86 44.17
9 Mace Wheat 150/m2 11 June 1.68 35
10 Mace Wheat 250/m2 5 May 3.08 30
11 Mace Wheat 250/m2 16 May 2.83 45.83
12 Mace Wheat 250/m2 11 June 2.45 5.83
13 Emu Rock Wheat 150/m2 5 May 3.15 13.33
14 Emu Rock Wheat 150/m2 16 May 2.8 59.17
15 Emu Rock Wheat 150/m2 11 June 1.66 88.33
16 Emu Rock Wheat 250/m2 5 May 3.12 25.83
17 Emu Rock Wheat 250/m2 16 May 2.81 60
18 Emu Rock Wheat 250/m2 11 June 2.13 0.83
19 Wyalkatchem Wheat 150/m2 5 May 3.2 20.83
20 Wyalkatchem Wheat 150/m2 16 May 3.02 20
21 Wyalkatchem Wheat 150/m2 11 June 2.28 25
22 Wyalkatchem Wheat 250/m2 5 May 3.41 16.67
23 Wyalkatchem Wheat 250/m2 16 May 2.64 14.17
24 Wyalkatchem Wheat 250/m2 11 June 2 5

Grain yield t/ha


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Ryegrass density plants/m2


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Trial results Wanilla

# Variety
Treatment 1
Treatment 2
Treatment 3
Grain yield (t/ha)
1 Fleet Barley 150/m2 5 May 3.53
2 Fleet Barley 150/m2 16 May 2.87
3 Fleet Barley 150/m2 11 June 1.63
4 Fleet Barley 250/m2 5 May 3.23
5 Fleet Barley 250/m2 16 May 3.24
6 Fleet Barley 250/m2 11 June 2.42
7 Mace Wheat 150/m2 5 May 3.93
8 Mace Wheat 150/m2 16 May 3.7
9 Mace Wheat 150/m2 11 June 1.94
10 Mace Wheat 250/m2 5 May 2.85
11 Mace Wheat 250/m2 16 May 3.1
12 Mace Wheat 250/m2 11 June 2.77
13 Emu Rock Wheat 150/m2 5 May 3.52
14 Emu Rock Wheat 150/m2 16 May 3.48
15 Emu Rock Wheat 150/m2 11 June 1.97
16 Emu Rock Wheat 250/m2 5 May 3.16
17 Emu Rock Wheat 250/m2 16 May 3.2
18 Emu Rock Wheat 250/m2 11 June 1.76
19 Wyalkatchem Wheat 150/m2 5 May 3.8
20 Wyalkatchem Wheat 150/m2 16 May 3.77
21 Wyalkatchem Wheat 150/m2 11 June 2.21
22 Wyalkatchem Wheat 250/m2 5 May 3.45
23 Wyalkatchem Wheat 250/m2 16 May 3.07
24 Wyalkatchem Wheat 250/m2 11 June 2.07

Grain yield t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 3, Wanilla, SA Not specified
Site 3, Yeelanna, SA Sand over clay
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 3, Wanilla, SA Tenosol
Site 3, Yeelanna, SA 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, Yeelanna SA 2014


Observed climate information

Rainfall trial gsr (mm) 398.8mm

Derived climate information

Site 3, Wanilla SA

Site 3, Yeelanna SA

Site 3, Wanilla SA

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Site 3, Yeelanna SA

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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: 11-12-2019 10:49am AEST