Friday 6 December 2019
Start Date
6-12-2019 11:10 AM
End Date
6-12-2019 11:25 AM
Session
Soil Science Learning Outcomes
Session Chair
Dr Deb Pritchard
Disciplines
Soil Science
Description
Subsoil acidity currently affects two thirds of the arable soils in the WA wheatbelt. At acidic soil pH, aluminium (Al) is solubilised from the solid phase into soil solution, creating a direct and localised toxicity to plant roots. Aluminium toxicity to plant roots constrains crop productivity by reducing root proliferation through soil, and inhibiting the capacity of roots to tolerate other constraints, such as compaction. Ongoing acidification of the subsoil is a direct artefact of the productive farming systems that are required to feed our world’s growing appetite for grain and livestock products.
Included in
Variable aluminium toxicity and root distribution in acidic soil profiles
Subsoil acidity currently affects two thirds of the arable soils in the WA wheatbelt. At acidic soil pH, aluminium (Al) is solubilised from the solid phase into soil solution, creating a direct and localised toxicity to plant roots. Aluminium toxicity to plant roots constrains crop productivity by reducing root proliferation through soil, and inhibiting the capacity of roots to tolerate other constraints, such as compaction. Ongoing acidification of the subsoil is a direct artefact of the productive farming systems that are required to feed our world’s growing appetite for grain and livestock products.
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Presented by Paul Damon, Gaus Azam, Craig Scanlan, Chris Gazey and Zed Rengel