Long-term liming ameliorates subsoil acidity in high rainfall zone in south-eastern Australia

Guangdi Li, Mark Conyers, Brian Cullis

Research output: Book chapter/Published conference paperConference paperpeer-review

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Management of Acid Soils Through Efficient Rotations (MASTER), is a long-term agronomic experiment commenced in 1992. The primary objective was to develop and demonstrate a sustainable farming system that is agriculturally productive, economically viable and environmentally effective to manage the highly acid soils in the high rainfall region (550'800 mm) of south-eastern Australia. The experiment was a fully phased design with 3 major treatment contrasts, a) annual systems versus perennial systems; b) limed versus unlimed treatments; and c) permanent pastures versus pasture-crop rotations. Results showed that the soil acidification rate was 0.1 pH units per year under the production system studied, and acidity amelioration rate was 0.044 pH units per year under the liming regime used. It is estimated that the system requires 270- 300 kg lime/ha/year, or 1.6-1.8 t lime/ha every 6 years, to keep the system sustainable. It was concluded that the subsoil acidity can be alleviated by surface liming over the long term.
Original languageEnglish
Title of host publication19th proceedings
Subtitle of host publicationSoil Solutions for a Changing World
EditorsR.J. Gilkes, N. Prakongkep
Place of PublicationAustralia
PublisherInternational Union of Soil Science
Number of pages4
ISBN (Electronic)9780646537832
Publication statusPublished - 2010
EventWorld Congress of Soil Science - Brisbane, Australia, Australia
Duration: 01 Aug 201006 Aug 2010


ConferenceWorld Congress of Soil Science


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