Irrigation Discussion Group Focus Paddock - impact of nitrogen on water intake of irrigated canola

2022

Research organisatons
Funding source

Trial details

Researcher(s) N/A
Contact email charlie.aves@irrigatedcroppingcouncil.com.au
Contact phone +61416400979
Year(s) 2022
Contributor Irrigated Cropping Council
Trial location(s) Vaucluse, TAS
Irrigation Discussion Group Focus Paddock - impact of nitrogen on water intake of irrigated canola locations
Aims

To investigate the extent that nitrogen rates impact canola yield and how this interacts with water use

Key messages

There is much to be learned and optimised in canola agronomy in Tasmania. With good infrastructure in place for irrigated cropping, the Tasmanian midlands hold great capacity for improved canola yields.

Key takeaways from this season and this study are muted yet we can still ascertain a few key learnings.

Long periods of waterlogging impact plants capacity to uptake nitrogen, inability to get on to the crop and deliver nitrogen early enough may have impacted overall yield despite the arial applications.

Management decisions are limited in these conditions, the use of aerial spreading is particularly useful in delicate soils that won’t recover from machinery damage.

Compounding factors in Severely wet years with high rainfall in critical growth times and chemical input windows all impact crop health and weed management, as well as nitrogen.

Lead research organisation Irrigated Cropping Council
Host research organisation Southern Farming Systems
Trial funding source GRDC ICF1906-002RTX
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Oilseed: Canola
Treatment type(s)
  • Crop: Nutrition
Trial type Demonstration
Trial design Unreplicated

Vaucluse 2022

Sow date 9 July 2022
Harvest date 11 January 2023
Plot size Not specified
Plot replication Not specified
Fertiliser

Farmer practice: 103.5kg/haN applied - 09/06/2022 - 20kg N/ha as NPKS, 30/08/2022 33kg N/ha as Canola Extra and 04/09/2022 49.5kg/ha N/ha as SOA/Urea

Low N Strip: 54kg/ha N applied. This strip recieved same applications for first 2 timings and no fertiliser in Sept. 

 

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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
Vaucluse, TAS Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Vaucluse, TAS 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.

Vaucluse TAS

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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.

Event Date Type Effect
Rainfall & waterlogging

High rainfall lead to the paddock being waterlogged and at times flooded. Areas where establishment had been low had high weed burdens

01-10-2022 High rainfall 50%


Trial last modified: 23-05-2023 16:01pm AEST