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Critical values for soil P, K and S for near maximum wheat, canola and lupin production in Western Australia

Anderson, G., Chen, W., Bell, R. and Brennan, R. (2013) Critical values for soil P, K and S for near maximum wheat, canola and lupin production in Western Australia. In: 2013 WA Agribusiness Crop Updates, 25 - 26 February, Perth, Western Australia

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Abstract

Soil test P, K and S – yield response relationships for wheat, lupin and canola can be used to make better fertiliser decisions. Soil test using 0-10 cm soil samples provided reliable predictions of yield response to P when separated into soil types with different P sorption capacities. In contrast, soil sampling to 30 cm depth improved wheat and canola yield response prediction with the K soil test when the impact of soil acidity and potential yield on root distribution was taken into account. The deeper soil sampling to 30 cm improved the relationship for S canola but not for wheat where rate of S leaching and potential yield appear to be important. The N soil test-response relationships for wheat and canola were not significant and critical values could not be defined.

Publication Type: Conference Paper
Murdoch Affiliation: School of Environmental Science
URI: http://researchrepository.murdoch.edu.au/id/eprint/19982
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