Fodder rotations with cropping to manage weeds

2013
CC BY 4.0

Research organisaton

Trial details

Researcher(s) Corinne Celestina (SFS)
David Watson (Agvise)
Year(s) 2013
Contributor Southern Farming Systems
Trial location(s) Inverleigh, VIC
Lake Bolac, VIC
Fodder rotations with cropping to manage weeds locations
Aims

To report on experimenting with a range of pasture and fodder-type options based on TG1, 2 and 3 and aims to gain an understanding of how they work in the south-eastern HRZ.

Key messages
  • An aggressive fodder species with good herbicide options is effective at controlling weeds.
  • Grazing in summer or winter has no significant effect on weeds. Instead, controlling the late-in-crop weeds that survive grazing and preventing them setting seed is what’s important.
  • The timing of seed removal operations is critical. Hay can be just as effective at reducing weeds as silage if it is timed correctly to prevent seed set.
  • Modelling has shown that the longer the pasture phase, the greater the weed control. Early work indicates that this may be the case but future trials will need to confirm this.
     
Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments

Cam Nicholson, Nicon Rural Services.
 


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

Method

Crop types Grain Legume: Field peas Hay: Oaten Pasture: Clover Hay: Lucerne : N/A
Treatment type(s)
  • Grazing: Timing
Trial type Experimental
Trial design Replicated

Inverleigh 2013 Field peas

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2013 Field peas

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2013 Field peas

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2013 Oaten

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2013 Clover

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2013 Lucerne

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Inverleigh 2013

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Lake Bolac 2013 Field peas

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Download the trial report to view additional method/treatment information

Download results

Trial results Change in annual ryegrass population under three different species sown at common, double and triple sowing rate

# Variety
Treatment 1
Establishment plants (plants/m2) Dry matter biomass (t DM/ha) Weeds (plants/m2)
1 Unspecified Balansa clover 6 kg/ha 113 5.176 19
2 Unspecified Balansa clover 12 kg/ha 202 5.812 34
3 Unspecified Balansa clover 18 kg/ha 248 4.031 19
4 Unspecified Peas 100 kg/ha 43 5.637 23
5 Unspecified Peas 200 kg/ha 74 6.393 25
6 Unspecified Peas 300 kg/ha 81 4.785 26
7 Unspecified Forage oats 100 kg/ha 187 8.802 56
8 Unspecified Forage oats 200 kg/ha 279 7.824 23
9 Unspecified Forage oats 300 kg/ha 447 9.681 33

Dry matter biomass t DM/ha


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Establishment plants plants/m2


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Weeds plants/m2


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Trial results Dry matter production and weed control efficacy

# Variety
Weeds (plants/m2) Dry matter biomass (t DM/ha)
1 Unspecified Sub clover (grazing) 19 2.349
2 Unspecified Lucerne (grazing) 19 1.692
3 Unspecified Control (no sown fodder species) 41 3.242
4 Unspecified Arrowleaf clover (silage) 15 7.241
5 Unspecified Persian clover (silage) 27 5.953
6 Unspecified Forage oats (silage) 56 8.664
7 Unspecified Ryegrass (silage) 19 7.727
8 Unspecified Balansa clover (brown manuring) 19 5.176
9 Unspecified Peas (brown manuring) 23 6.135
10 Unspecified Serradella (brown manuring) 5 4.752

Dry matter biomass t DM/ha


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Weeds plants/m2


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Trial results Weed populations at Inverleigh (WR) with or without a shallow autumn cultivation

# Variety
Weeds (plants/m2)
1 None used No Autumn tickle 7.8
2 None used Autumn tickle 3.9

Weeds plants/m2


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Trial results Weed populations at Lake Bolac (ARG) with or without a shallow autumn cultivation

# Variety
Weeds (plants/m2)
1 None used No Autumn tickle 172
2 None used Autumn tickle 157

Weeds plants/m2


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Inverleigh, VIC Not specified
Lake Bolac, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Inverleigh, VIC Sodosol
Lake Bolac, 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 Inverleigh VIC Lake Bolac VIC
2013 567.4mm478.1mm
2012 579.9mm507.9mm
2011 580.5mm532.6mm
2010 592.9mm532.7mm
2009 508.8mm476.1mm
2008 492.1mm477.4mm
2007 455.4mm474.0mm
2006 467.8mm461.2mm
2005 491.2mm491.3mm
2004 438.6mm474.1mm
2003 416.4mm482.7mm
2002 399.6mm463.3mm
2001 472.4mm466.9mm
2000 448.5mm459.2mm
National soil grid Source: CSIRO/TERN
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

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Inverleigh VIC

Lake Bolac VIC

Inverleigh VIC

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Lake Bolac 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: 23-10-2019 11:57am AEST