Grain & Graze 3 - The impact of livestock on paddock health

2016

Research organisatons
Funding source

Trial details

Aims

A long-term study was established at the Minnipa Agricultural Centre from 2008 to 2016 (EPFS Summaries 2008 to 2015) to assess the systems impact of grazing on crop and pasture production, and soil health. 

Key messages
  • Over nine seasons, incorporating livestock into the rotation improved overall system outcomes in this trial, including; increased nitrogen cycling and water use efficiency, reduction in weed and pest populations and no negative effects on cereal performance or soil health, while value adding to stubble and pastures by grazing.
  • The high input grazed farming system had a gross margin of over $100/ha/year more than lower input and ungrazed treatments over the nine-year trial period.
Lead research organisation Southern Farming Systems
Host research organisation SARDI Minnipa Agricultural Centre
Trial funding source GRDC SFS00028
Related program Grain & Graze 3
Acknowledgments

I gratefully acknowledge the help of Jake Hull, Wade Shepperd and John Kelsh for site management and Ian Richter, Sue Budarick and Brett Hay for data collection. I would also like to thank Barry Mudge with his assistance in the basic economic analysis of the trial. The Eyre Peninsula Grain and Graze 3 project is funded by GRDC (SFS00028).


Other trial partners Participating organisations: EP, BCG, MSF, Ag Excellence Alliance.
Download the trial report to view additional trial information

Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
  • Grazing: Regime
  • Sowing: Rate
Trial type Demonstration
Trial design Unreplicated

Minnipa Agricultural Centre 2016

Sow date Not specified
Harvest date Not specified
Plot size 100m x 350m
Plot replication 1
Fertiliser

2016

Wheat sown @ 50 kg/ha + 40 kg/ha DAP

Wheat sown @ 70 kg/ha + 60 kg/ha DAP

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Gross margin low input (ungrazed) ($/ha) Gross margin high input (ungrazed) ($/ha) Gross margin high input (grazed) ($/ha) Gross margin low input (grazed) ($/ha)
1 2008 wheat -49 -42 -42 -49
2 2009 wheat 829 879 905 803
3 2010 medic -23 -39 284 96
4 2011 wheat 284 366 465 362
5 2012 medic -27 -27 89 26
6 2013 wheat 332 390 464 356
7 2014 wheat 525 677 749 598
8 2015 medic -15 -60 151 86
9 2016 wheat 339 490 490 372

Gross margin high input (grazed) $/ha


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Gross margin high input (ungrazed) $/ha


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Gross margin low input (grazed) $/ha


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Gross margin low input (ungrazed) $/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 22, Minnipa Agricultural Centre, SA Red sandy loam
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 22, Minnipa Agricultural Centre, SA Calcarosol
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 22, Minnipa Agricultural Centre SA 2016


Observed climate information

Rainfall avg ann (mm) 325mm
Rainfall avg gsr (mm) 241mm
Rainfall trial total (mm) 391mm
Rainfall trial gsr (mm) 268mm

Derived climate information

Site 22, Minnipa Agricultural Centre 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.




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Trial last modified: 08-10-2019 11:46am AEST