Publication Date

13-2-2023

Series Number

DAW1902-003RTX

Publisher

Department of Primary Industries and Regional Development, Western Australia

City

Perth

Abstract

This report is an output of project DAW1902-003RTX ‘Reengineering soils to improve the access of crop root systems to water and nutrients stored in the subsoil’, supported by a co-investment between the Department of Primary Industries and Regional Development (DPIRD) and the Grains Research and Development Corporation (GRDC).

Key messages:

• Existing soil amelioration options can generate substantial yield responses. However, further yield gain is possible with further improvement in soil amelioration strategies.

• Mapping of soil constraints and potential yield gaps using the water use efficiency achieved from a pilot reengineering experiment has identified a significant yield gap attributed to multiple interacting soil constraints.

• A gap analysis has identified the strengths and weaknesses of current soil amelioration options and opportunities that can help further improve soil amelioration strategies.

• A soil reengineering diagnostic process has been developed which can be used to determine options for reengineering various constrained soil profiles under various climatic conditions. At this stage these approaches are restricted to experimental scales.

Number of Pages

56

Keywords

reengineering strategies, soil constraints, sandy soils, texture contrast soils, grains, cropping

Disciplines

Agricultural Science | Agronomy and Crop Sciences | Soil Science

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