HYC PGR x harvest date interaction

2020

Research organisaton
Funding source

Trial details

Researcher(s) Nick Poole
Darcy Warren
Year(s) 2020
Contributor Field Applied Research (FAR) Australia
Trial location(s) Albany, WA
HYC PGR x harvest date interaction locations
Aims

To assess the value of PGRs with delayed harvest in HRZ regions

Key messages

 Buff achieved a grain yield of 6.29 t/ha significantly higher than RGT Planet at 5.85 t/ha when harvested on time.
 Harvest logistics and cultivar choice was the major factors influencing yield losses due to a delay in harvest. Buff suffered a 1.83t/ha yield penalty from delaying harvest by 3 weeks, and RGT Planet 1.07t/ha.
 Despite large yield losses to delaying harvest, plant growth regulators (PGRs) applied at all three timings did not offer any yield advantage in both cultivars whether harvested on time or when harvest was delayed. This is important because growers can have confidence in higher head loss risk areas that yield potential is unlikely to be compromised by PGR applications.
 Current recommendations to growers are to ensure timely harvest and to choose cultivars with improved head retention. Yields were lower than expected in 2020 and the additional benefits of PGR application for lodging and brackling control were not observed in this experiment.
 The use of PGRs for head loss control requires further development in 2021 but these and other center results have demonstrated there is little downside risk with the use of PGRs in the higher rainfall zone and a GS31 and later application could be combined with the most effective fungicide timings.

Albany WA 2020

Rotation position: 1st cereal after canola, 2018 pasture, 2017 barley.
Soil type & management: Shallow duplex sand over gravel over clay. Clayed 2017, smudged
2019/20.

Lead research organisation Field Applied Research (FAR) Australia
Host research organisation N/A
Trial funding source GRDC FAR2004-002SAX
Related program FAR Hyper Yielding Crops 2020-2022
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Barley
Treatment type(s)
  • Crop: Variety
  • Growth regulator: Timing
  • Harvest: Timing
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Albany 2020

Sow date 1-2 May 2020
Harvest date 17 December 2020
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
Albany, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Albany, WA Podosol
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.

Albany WA

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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

2020 trial report



Trial last modified: 19-04-2023 12:18pm AEST