Canola in the HRZ - Optimising nutrition

2021

Research organisaton
Funding source

Trial details

Researcher(s) Jeremy Curry
Contact email Jeremy.Curry@dpird.wa.gov.au
Contact phone 0890831160
Year(s) 2021
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Gibson, WA
Canola in the HRZ - Optimising nutrition locations
Aims

To determine whether macronutrient supply (phosphorus, potassium, sulfur) becomes limiting as canola growers target high yields with high nitrogen rates in the high rainfall zone of WA.

Key messages
  • Increasing the nitrogen rate from 100N to 150N increased canola grain yield from 1.8t/ha to 2.5t/ha, with yield plateauing at the 200N and 250N rates (2.6-2.7t/ha).
  • There was an obvious response to sulfur applications at this site, with applied sulfur increasing yield by 300kg/ha with 100N applied, and by over 800kg/ha with 250N applied. There was no significant response to applied phosphorus or potassium at this site.
  • With the large yield responses to nitrogen at this site, even at a theoretical 3:1 urea to canola price, applying 150N resulted in the largest gross margin.
Lead research organisation Department of Primary Industries and Regional Development WA
Host research organisation N/A
Trial funding source GRDC DAW1903_008RMX
Related program N/A
Acknowledgments

This experiment has been conducted through the Optimising high rainfall zone cropping for profit in the Western and Southern Regions project, funded by GRDC and run in collaboration by DPIRD, CSIRO and FAR Australia. DPIRD gratefully acknowledge the Whiting family and their staff for generously providing the trial site and their assistance during the season. Thanks to Chris Matthews and the Esperance RSU for trial management and Helen Cooper for her technical assistance.


Other trial partners FAR Australia, CSIRO
Download the trial report to view additional trial information

Method

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

Gibson 2021

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
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
Gibson, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Gibson, WA Sodosol
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

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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.

Gibson WA

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



Trial last modified: 03-07-2023 18:07pm AEST