Authors

N. K. Edwards

Publication Date

1990

Document Type

Report

DAFWA Collections

Grains and field crops

Abstract

Aims: Determine the factors affecting the fate of native and applied potassium on sandplain soils.
Define current and residual response curve parameters for potassium applications.
Develop recommendations for the economic management of soil potassium levels.

Trial 88BA46

Maintenance application rates of potassium on sandplain soils.

Location: Badgingarra Research Station.

Fertilizer: Pastures and L. cosentinii - 200 kg/ha Super topdressed, wheat - 100 kg/ha Super topdressed, 120 kg/ha Agras No 1 drilled, lupins - 240 kg/ha Super Mn drilled. Urea topdressed on wheat on 26 June, 100 kg/ha.

Trial 88TS69

Maintenance application rates of potassium on sandplain soils

Location: North Eneabba.

Fertilizer: Pastures and L. cosentinii - 150 kg/ha Super topdressed, wheat - 65 kg/ha Super topdressed, 120 kg/ha Agras No 1 drilled, lupins - 165 kg/ha Super drilled. Urea topdressed on wheat on 5 July, 100 kg/ha.

Trial 89KO26

Maintenance application rates of potassium on sandplain soils.

Location: Kojaneerup Research Block

Fertilizer: Pastures - 200 kg/ha Super topdressed, barley - 100 kg/ha Super topdressed, 120 kg/ha Agras No 1 drilled, lupins - 200 kg/ha Super Mn drilled.

Trial 89BA24

Residual value of potassium on sandplain soils.

Location: Badgingarra Research Station.

Fertilizer: Pastures - 200 kg/ha Super topdressed, lupins - 240 kg/ha Super Mn drilled.

Trial 90MO60

Potassium requirements of pastures on the sandplain soils of Western Australia.

Location: Bibby Springs.

Fertilizer: 200 kg/ha Super Cu Zn Mo topdressed.

Number of Pages

14

Keywords

Western Australia

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