Deep ripping flexi -N


Research organisatons

Trial details

Researcher(s) N/A
Year(s) 2015
Contributor Northern Agri Group
Trial location(s) Site 1, Binnu, WA
Deep ripping flexi -N locations

To determine the benefits of deep ripping and the implications for N fertiliser.

Key messages
  • Deep ripping enabled the crop to access about an extra 40kg of soil N/ha.
  • The crop was as responsive to Flexi-N after deep ripping.
  • There was no yield penalty from delaying Flexi-N application until the end of tillering. Deep ripping and Flexi-N were very profitable at this site.  
Lead research organisation CSBP
Host research organisation Northern Agri Group
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
  • Soil: Compaction
Trial type Experimental
Trial design Replicated

Binnu 2015

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 Table 1

# Treatment 1
Treatment 2
Treatment 3
Hectolitre weight (kg/hL) Screenings (%) Return on investment ($/ha) Protein (%) Grain yield (t/ha)
1 Not ripped Nil Nil 66.6 8.7 - 11.3 1.08
2 Not ripped 50 Flexi-N banded Nil 71.3 7.2 21 12 1.3
3 Not ripped 100 Flexi-N banded Nil 72.2 7 46 11.7 1.54
4 Not ripped Nil 50 Flexi-N Z30 72.5 7.7 40 11.6 1.39
5 Not ripped Nil 100 Flexi-N Z30 72.8 7.4 56 12.3 1.59
6 Not ripped 50 Flexi-N banded 100 Flexi-N Z30 72.9 6.4 71 12.7 1.79
7 Deep ripped Nil Nil 75.7 6.2 - 11.5 2.06
8 Deep ripped 50 Flexi-N banded Nil 75.8 5.8 31 11.7 2.32
9 Deep ripped 100 Flexi-N banded Nil 75.8 6 43 11.6 2.5
10 Deep ripped Nil 50 Flexi-N Z30 75.7 6.6 16 11.4 2.28
11 Deep ripped Nil 100 Flexi-N Z30 76.7 6 136 11.6 2.89
12 Deep ripped 50 Flexi-N banded 100 Flexi-N Z30 75.8 6.1 126 11.8 2.99

Grain yield t/ha


Hectolitre weight kg/hL


Protein %


Return on investment $/ha


Screenings %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 1, Binnu, WA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 1, Binnu, WA 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.

Site 1, Binnu WA

NOTE: Exact trial site locality unknown - Climate data may not be accurate

Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from
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: 25-06-2019 14:28pm AEST