Raised bed maintenance


Research organisaton

Trial details

Researcher(s) Renick Peries, Bruce Wightman and Nazrul Islam (DPI/SFS)
Year(s) 2002
Contributor Southern Farming Systems
Trial location(s) Gnarwarre, VIC
Raised bed maintenance locations

To examine the effects of some of the common bed renovation treatments adopted by the farmers, particularly on soil structure, soil water dynamics and subsequent crop performance on beds. 

Key messages

The trend to higher grain yield and deeper root growth in the deep rip treatment suggests that in heavier soils deep ripping may be beneficial to encourage deep rooting and deeper infiltration of water following rainfall events. While the observations relate to responses in the year in which the treatments were imposed, it will take further cropping cycles to determine the stability and sustainability of these responses. The pattern of rainfall distribution and the overall soil water dynamics may have also had an impact on the yield responses. While the initial response is promising, further testing would be required before recommendations could be made. 

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
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Crop type Canola
Treatment type(s)
  • Soil: Preparation
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Gnarwarre 2002

Sow date 28 May 2002
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
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Download results

Trial results Table 1

# Variety
Treatment 1
Grain yield (t/ha) Oil (%)
1 Grace Deep Rip (50cm) and reshape 3.3 44.5
2 Grace Cultivate (100mm) and reshape 3 43.6
3 Grace Reshape only 2.6 46.4
4 Grace Control 2.6 44.9

Grain yield t/ha


Oil %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Gnarwarre, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Gnarwarre, VIC Chromosol
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



Derived climate information

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

Gnarwarre VIC


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: 14-11-2019 13:39pm AEST