Canola nutrition trial


Research organisatons
Funding source

Trial details

Researcher(s) Rohan Brill
Nick Poole
Year(s) 2023
Contributor Field Applied Research (FAR) Australia
Trial location(s) Wallendbeen, NSW
Canola nutrition trial locations

To determine the canola yield response to N, P, K & S in HYC environments, and to determine the factors driving the positive yield response observed from applying chicken manure to canola in HYC trials in previous seasons.

Key messages
  • Canola yield response to N application plateaued at 3.7 t/ha with 150 kg N/ha applied, 0.6 t/ha higher than where nil N was applied.
  • The addition of 3 t/ha (dry basis) Chicken Manure (see analysis Table 3) with nil N had no impact on grain yield but did increase yield when applied with the 225 kg N/ha rate, yielding 0.4 t/ha more than 225 kg N/ha alone.
  • Although the manure supplied ~105 kg N/ha, the lack of response where no N as urea was applied suggests that this N may not be readily available to the crop.
  • The Inorganic Nutrient treatment (NPKS in inorganic fertiliser equivalent to 3 t/ha chicken manure) applied with 225 kg N/ha yielded similarly to where Chicken Manure was applied with 225 kg N/ha.
  • Where the macro-nutrients N, P, K & S were sequentially dropped out of the Inorganic Nutrition treatment, the only one that affected yield was the subtraction of P. Dropping P out reduced yield by 0.4 t/ha compared with where both 3 t/ha Chicken Manure and the Inorganic Nutrient equivalent were applied with 225 kg N/ha.
  • This response to P comes even where there was 15 kg P/ha applied pre-sowing (as single super) and 28 kg /ha P applied at sowing (as MAP).
  • Further work determining optimum P levels is required for canola yields > 4 t/ha. Potentially growers should aim to increase their soil P reserves gradually over time (similar to N bank approach) to increase yield potential in high yielding situations.
Wallendbeen NSW 2023

Variety 45Y95 CL

Rotation position: Wheat 2022, Canola 2021, Pasture 2020
Soil type: Silty loam
Available Nitrogen (kg/ha) 0-100 cm: 119
Colwell P 0-10 cm: 34 mg/kg
pH (CaCl2) 0-10 cm: 5.3
Organic Carbon 0-10 cm: 2.1

Lead research organisation Field Applied Research (FAR) Australia
Host research organisation Brill Ag
Trial funding source GRDC FAR2004-002RTX
Related program N/A
Acknowledgments N/A
Other trial partners FAR Australia
Download the trial report to view additional trial information


Crop type Oilseed: Canola
Treatment type(s)
  • Fertiliser: Rate
  • Fertiliser: Timing
  • Fertiliser: Type
Trial type Experimental
Trial design Randomised,Replicated

Wallendbeen 2023

Sow rate or Target density 40 plants/m2
Sow date 27 April 2023
Harvest date 27 November 2023
Trial design method RCBD Randomised Complete Block Design
Trial design arrangement 12 rows x 4 cols
Total plots 48
Plot size Not specified
Plot replication 5
Psuedoreplication Not specified
Plot randomisation Y

Basal Fertiliser: 27 Apr- 170 kg/ha Single Super (Broadcast pre-sow)
130 kg/ha MAP (1 cm below seed) (13 kg N/ha, 28 kg P/ha)

Nitrogen: 3 Jun- 112.5 kg N/ha (245 kg/ha urea)
               18 Aug- 112.5 kg N/ha (245 kg/ha urea)


1 Jun- Prosaro 0.45 L/ha

4 Sep- Aviator Xpro 0.8 L/ha

Seed treatment Saltro Duo
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Wallendbeen, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Wallendbeen, NSW Kandosol
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



Derived climate information

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

Wallendbeen NSW


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.

Trial report and links

2023 trial report

Trial last modified: 12-07-2024 13:59pm AEST