Optimising nutrition to maximise yield in canola in the HRZ

2020

Research organisaton
Funding source

Trial details

Researcher(s) Jeremy Curry
Contact email Jeremy.Curry@dpird.wa.gov.au
Contact phone 0890831160
Year(s) 2020
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Gibson, WA
Optimising nutrition to maximise yield in canola in the HRZ locations
Aims

Understand the critical nutrients required to achieve high yielding (>3t/ha) canola crops, especially when wanting to chase yields with high N in-season.

Background

Project staff ran a series of workshops in high rainfall areas in WA in 2019 to understand key constraints and knowledge gaps when cropping within the HRZ (450-800mm annual rainfall) of WA. Among other things, optimising nutrition to maximise profitability was one such knowledge gap, especially considering fertiliser is the largest variable input cost. While there are a number of resources available that define critical levels of nutrition, this project is specifically focussed on growers with achieved or aspirational yields of 10t/ha in cereals and 5t/ha in canola, and so this trial will investigate whether the critical (or limiting) nutrients change at these high yields (and high levels of applied N).

Key messages

Canola yield increased significantly up to, but not above, 200 kg N/ha.

There was little benefit to applying above 15P or any K, S or trace elements.

Fertilisers (both banded and top-dressed) significantly decreased plant establishment and early growth.

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 Region project, funded by GRDC and run in collaboration by DPIRD, CSIRO and FAR Australia. Thanks to Esperance RSU for trial management and Helen Cooper for providing 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 2020

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 Sandy duplex
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

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.

Gibson WA

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



Trial last modified: 03-07-2023 18:06pm AEST