Increasing grain yields by deep tillage on soils with multiple constraints

Document Type

Conference Proceeding

Publication Date

11-2018

Conference Title

National Soil Science Conference

Place of Publication

Bridgewater

ISBN

978-0-646-99723-0 (epubl)

Keywords

Subsoil acidity, Compaction, Deep ripping, Lime, Canola, Wheat, Western Australia grainbelt

Disciplines

Agribusiness | Agricultural Science | Agronomy and Crop Sciences | Climate | Environmental Engineering | Environmental Indicators and Impact Assessment | Environmental Monitoring | Hydrology | Mineral Physics | Natural Resources Management and Policy | Soil Science | Water Resource Management

Abstract

Proceedings of the National Soil Science Conference, Canberra, ACT, 18 to 23 November 2018.

Soil Science Society of Australia Inc.

Yellow-Orthic Tenosols (acidic yellow deep sands) in the Western Australian grainbelt often have multiple constraints to crop production which include non-wetting, subsoil compaction and acidity. As a result of these multiple limitations these soils have been considered poor cropping soils with estimated costs in lost production exceeding $200/ha. A systems approach to managing these soils has been developed to improve crop production which includes a winter fallow, lime application and incorporation in late winter and seeding canola in the following autumn. This paper reports on the improvements in crop production that have occurred within this novel system and identifies key components of the system that have contributed to the yield increases.

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