Deep soil re-engineering to optimise grain yield under low rainfall conditions
Publication Date
25-2-2019
Series Number
DAW00252
Publisher
Grains Research and Development Corporation (GRDC)
City
Perth
Abstract
- Wheat grain yield was doubled and water use efficiency (WUE) was as high as 24 kg per mm due to deep amelioration of soil compaction and acidity in the low rainfall region of WA.
- Deep incorporation of lime increased soil pH by more than a unit and decreased Al concentration to below toxic levels within two months of lime application.
- Wheat plants produced root systems 60-65 cm deep with deep amelioration of compaction and acidity compared to 20-25 cm deep for the untreated control. Deeper roots allowed plants to extract soil water and nutrients from deeper soil horizons and avoid moisture stress, in absence of sufficient rainfall, during the grain filling stage.
Disciplines
Agronomy and Crop Sciences | Soil Science
Recommended Citation
Azam, G,
Gazey, C,
and
Bowles, R.
(2019), Deep soil re-engineering to optimise grain yield under low rainfall conditions. Grains Research and Development Corporation (GRDC), Perth. Report DAW00252.
https://library.dpird.wa.gov.au/fc_researchrpts/10
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