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Reassessing canola yield loss to aphids

2015

Research organisation
Funding source
Department of Agriculture and Food WA
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Martin Harries
Svetlana Micic
Mark Seymour
Year(s) 2015
Contributor Department of Agriculture and Food WA
Trial location(s) Geraldton, WA
Reassessing canola yield loss to aphids locations
Aims
  • To determine the extent of yield loss caused by high levels of aphid infestation on canola in the Northern Agricultural Region.
  • To re-investigate management guidelines.
Key messages
  • Heavy infestation of aphids caused significant yield loss to canola in a high rainfall environment.
  • The length of cabbage aphids on spikelets at flowering was directly proportional to yield loss.
  • The function yield (kg/ha) = -141x + 1114 where x= spike length colonised in cm explained yield loss R2 0.9.
  • Aphid colonisation also reduced seed quality: oil content and seed size.
Lead research organisation Department of Agriculture and Food WA
Host research organisation N/A
Trial funding source GRDC DAW00227
Related program N/A
Acknowledgments

Thanks to Stephanie Boyce, Jo Walker and the Geraldton RSU for trial management and measurements and Brenda Coutts for virus testing.  Trial work was made possible by funding from GRDC and COGGO. 
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Oilseed: Canola
Treatment type(s)
  • Pest Management : Aphids
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Geraldton 2015

Sow date 27 April 2015
Harvest date 9 October 2015
Plot size 20m x 7.2m
Plot replication Not specified
Fertiliser

100 kg/ha Agstar extra deep banded and Urea 50 kg/ha on 27/04/15 and  NS41 @ 70 kg/ha on 11/06/15.
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
Geraldton, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Geraldton, WA Chromosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Geraldton WA
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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.

Geraldton 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 report and links

2015 trial report



Trial last modified: 04-09-2017 15:05pm AEST