Canola Nutrition for the HRZ – Condingup 2022

2022

Research organisaton
Funding source

Trial details

Researcher(s) N/A
Contact email jeremy.curry@dpird.wa.gov.au
Contact phone 0890831160
Year(s) 2022
Contributor Department of Primary Industries and Regional Development WA
Trial location(s) Howick, Western Australia, WA
Canola Nutrition for the HRZ – Condingup 2022 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 applied nitrogen from 100N to 150N increased yield from 2.8 to 3.2 t/ha and was profitable under both standard and high fertiliser prices. Yield responses up to 200N at least covered fertiliser costs, while increasing to 250N reduced gross margin under high fertiliser pricing scenarios.
  • Despite reasonable Colwell P levels in the top 10cm (22 mg/kg), responses to banded phosphorus were evident early in the season. Applying 15 kg P/ha provided yield responses that broke even under high fertiliser prices or were profitable under average prices, while yield responses generally did not justify the significant costs of applying more than 15P.
  • Despite yields of 3.8 t/ha with 300N-31P-50K-31S applied, incorporation of manure at seeding or applying high rates of synthetic fertiliser over multiple application timings increased yield by up to 0.5 t/ha, indicating that nutritional deficiencies may still be present even with these high fertiliser rates
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 through collaboration by DPIRD, CSIRO and FAR Australia. DPIRD gratefully acknowledge Andrew Fowler for generously providing the trial site, and his staff at Chilwell, particularly Clint Simpson and Deode Wilson for 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 Randomised

Howick, Western Australia 2022

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
Howick, Western Australia, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Howick, Western Australia, 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.

Howick, Western Australia 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 18:15pm AEST