The effect of grazing crops on soil structure and weeds (preliminary findings)

2010

Research organisaton
Funding sources

Trial details

Researcher(s) Simon Falkiner and Cam Nicholson
Simon Falkiner, Cam Nicholson
Year(s) 2010
Contributor Southern Farming Systems
Trial location(s) Site 7, Inverleigh, VIC
Site 6, Lake Bolac, VIC
Site 1, Werneth, VIC
The effect of grazing crops on soil structure and weeds (preliminary findings) locations
Aims

To determine the impact of grazing on soil condition and weed populations.  This report is on findings after two years of grazing. 

 To determine the impact of grazing on soil condition and weed populations.  This report is on findings after two years of grazing. 

Key messages
  • Despite visual differences there is no major impact on soil structure, water holding capacity or water infiltration from grazing in summer or winter when soils are water logged.
  • Grazing in the previous winter or summer does not affect the following crop establishment or grain yield.
  • Any yield losses after winter grazing are the result of moisture stress in the period immediately after grazing through to flowering.
  • Annual ryegrass and wild raddish populations did not increase because of grazing, although the sites only had low levels of infestation to being with. However, farmer observations do not support this and further work is needed.
  • Despite visual differences there is no major impact on soil structure, water holding capacity or water infiltration from grazing in summer or winter when soils are waterlogged.
  • Grazing in the previous winter or summer does not affect the following crop establishment or grain yield.
  • Any yield losses after winter grazing are the result of moisture stress in the period immediately after grazing through to flowering.
  • Annual ryegrass and wild raddish populations did not increase because of grazing, although the sites only had low levels of infestation to begin with. However farmer observations do not support this and further work is required.
Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC
Trial funding source Caring for our Country
Trial funding source Grain & Graze
Related program Grain & Graze 2
Acknowledgments

GRDC and Caring for our Country through the Grain and Graze 2 program.
 


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

Method

Crop types Wheat
Barley
Canola
Treatment type(s)
  • Grazing: Regime
  • Grazing: Timing
Trial type Experimental
Trial design Replicated

Inverleigh 2010 Wheat

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

Inverleigh 2010 Barley

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

Lake Bolac 2010 Wheat

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

Werneth 2010 Canola

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 Wheat yield at Inverleigh in 2010

# Treatment 1
Grain yield (t/ha) Screenings <2mm (%)
1 Not Grazed 7 2.3
2 Grazed in winter 6.6 1.4
3 Grazed in summer and winter 6.7 1.3
4 Grazed in summer 6.9 2.4

Grain yield t/ha


Loading

Screenings <2mm %


Loading

Trial results Barley yield at Inverleigh in 2011

# Treatment 1
Grain yield (t/ha)
1 Not Grazed 6.8
2 Grazed in winter 7.1
3 Grazed in summer and winter 4.8
4 Grazed in summer 4.8

Grain yield t/ha


Loading

Trial results Wheat yield at Lake Bolac in 2010

# Grain yield (t/ha)
1 Not Grazed 2.5
2 Grazed in winter 2.6
3 Grazed in summer and winter 2.8
4 Grazed in summer 2.8

Grain yield t/ha


Loading

Trial results Barley yield at Lake Bolac in 2011

# Grain yield (t/ha)
1 Not Grazed 2.5
2 Grazed in winter 2.6
3 Grazed in summer and winter 2.8
4 Grazed in summer 2.8

Grain yield t/ha


Loading

Trial results Canola yield at Wernth in 2010

# Grain yield (t/ha)
1 Not Grazed 0.9
2 Grazed in winter 0.03
3 Grazed in summer and winter 0.04
4 Grazed in summer 0.9

Grain yield t/ha


Loading
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 7, Inverleigh, VIC Not specified
Site 6, Lake Bolac, VIC Not specified
Site 1, Werneth, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 7, Inverleigh, VIC Sodosol
Site 6, Lake Bolac, VIC Sodosol
Site 1, Werneth, 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

Derived climate information

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

Site 7, Inverleigh VIC

Site 6, Lake Bolac VIC

Site 1, Werneth VIC

Site 7, Inverleigh VIC

Loading
Loading
Loading

Site 6, Lake Bolac VIC

Loading
Loading
Loading

Site 1, Werneth 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.




CC BY
Individual Trial Project data and information and OFT metadata are licensed under a Creative Commons Attribution 4.0 International License.
The data and information accessed through OFT may also be subject to Terms of Use specified by the Trial Contributor,
in which case the Terms of Use of a Trial Contributor take precedence over other information provided on OFT.
Trial last modified: 31-10-2019 11:29am AEST