Researcher(s) |
Y Genc Graham Lyons Pamela Zwer |
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Year(s) | 2018 - 2020 |
Contributor | The University of Adelaide |
Trial location(s) |
Redhill, SA
Turretfield, SA |
To assess growth (via top biomass at heading) and grain yield of diverse oat varieties (vs durum wheat check) under saline-sodic soil conditions, compared with "good soil" conditions at Turretfield.
This project is funded by SAGIT as a follow-up to a 12-month study which screened oat varieties using pot assays in growth room/greenhouse. Two seasons (2018 and 2019) of field trials will be conducted.
About 60% of SA agricultural soils are sodic (high Na, etc) or saline-sodic (high NaCl & high Na, etc), which reduces yield. This study extended screening trials into two seasons of field trials at Redhill and Turretfield, to assess tolerance of oats to saline-sodic soils.
Main findings:
• The most tolerant oats (grain yield) were early-to-medium maturity milling varieties: Bannister, Bilby, Mitika, Williams, Echidna, Kowari. My message to farmers: “To maximize yield and profitability from salty paddocks, sow milling oats Bannister, Bilby, Mitika, Echidna or Kowari”
• The most tolerant oats (biomass yield) were Kangaroo, Bannister, Wintaroo, Mulgara, Mitika. All oats listed are commercial varieties, available now
• The grain yields of tolerant oats at Redhill (the saline-sodic site, under low growing season rainfall of 170 mm) were outstanding, e.g. Bannister (3.2 t/ha), Bilby (3.1), similar to Compass barley (3.2) and much higher than Mace bread wheat (1.5) and Aurora durum wheat (1.1)
• Pasture oats (e.g. Bond, Wizard) and overseas oats were intolerant of saline-sodicity
• The pot and field trials showed that the ability of the plant to extract water from salinesodic soil, rather than its ability to exclude sodium, is the key to acceptable yield on this type of soil.
Lead research organisation |
University of Adelaide |
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Host research organisation |
School of Agriculture, Food and Wine - The University of Adelaide |
Trial funding source | SAGIT |
Related program | N/A |
Acknowledgments |
SAGIT for funding this study John Wheaton, Redhill, who is hosting the trial The University of Adelaide durum breeding group for managing the 2018 Redhill trial and the SARDI oat breeding group (headed by Pamela Zwer) for managing the 2018 Turretfield trial and the 2019 Redhill and Turretfield trials Yusuf Genc (SARDI) for valuable advice. |
Other trial partners | SARDI |
Crop type | Forage: Oats |
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Treatment type(s) |
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Trial type | Experimental |
Trial design | Randomised |
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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.