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Potassium strategies

2016
CC BY 4.0

Research organisations
West Midlands Group CSBP

Trial details

Researcher(s) N/A
Year(s) 2016
Contributor West Midlands Group
Trial location(s) Waddington, WA
Potassium strategies locations
Aims

To compare potassium (K) strategies over 3 years.

Key messages
  • This trial produced a 0.9 t/ha yield response to potassium (K) fertiliser (trt 1 v 6).
  • Early rains and a wetter than average season contributed to waterlogged growing conditions through June/July and most likely to significant leaching losses of nitrogen (N).
  • Topdressed MoP treatments lacked the early vigour of plots sown with potassium (K) banded with K-Till Plus. This was despite about 50mm of rain falling between the date of topdressing (12 April) and sowing (16 May).
  • As the season progressed, crop growth improved up to the highest rate of MoP (144 kg/ha) applied.
  • There were no significant yield differences between strategies supplying between 9 and 24 kg K/ha (trt 2, 3, 4, 5).
  • There was no response to magnesium (Mg) supplied by kieserite (trt 7).

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Lead research organisation CSBP
Host research organisation West Midlands Group
Related program N/A
Acknowledgments

Located at Graham's, Waddington. 
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser : Application Method
Trial type Experimental
Trial design Replicated

Waddington 2016

Sow rate or Target density 80kg/ha
Sow date 16 May 2016
Harvest date 29 November 2016
Plot size Not specified
Plot replication Not specified
Fertiliser

12 April: MoP

16 May: 90 L/ha Flexi-N (basal)

29 June: 100 L/ha Flexi-N (basal)

12 July: 2 L/ha Coptrel (basal)

11 August: 80 L/ha Flexi-N (basal)
Herbicide

16 May: 2 L/ha Treflan, 1 L/ha Sprayseed, 300 mL/ha Lorsban
Fungicide

11 August: 300 mL/ha Prosaro, 150 mL/ha alphacypermethrin 
Download the trial report to view additional method/treatment information
Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Waddington, WA Sand over gravel
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Waddington, WA Chromosol
Soil Moisture Source: BOM/ANU
Average amount of water stored in the soil profile during the year, estimated by the OzWALD model-data fusion system.
Year Waddington WA
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Climate

Waddington WA 2016

Observed climate information

Rainfall trial gsr (mm) 500mm

Derived climate information

Waddington WA

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial report and links

2016 trial report



Trial last modified: 23-07-2019 14:52pm AEST