Potassium in wheat: source, rate, timing and placement

2015
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Brett Beard (Summit Fertilizers)
Year(s) 2015
Contributor West Midlands Group
Trial location(s) Dandaragan, WA
Potassium in wheat: source, rate, timing and placement locations
Aims

To assess the value of muriate and sulphate sources of potassium on growth and yield of wheat when applied by banding and topdressing at seeding time or topdressing after emergence.

Key messages
  • Mace wheat responded positively to K.
  • Source of K (SOP or MOP product) and timing had minimal impact on growth or yield response.
  • Drilled MOP at 100 kg/ha produced the greatest yield and returns but evidence that drilled K is better overall than topdressed applications was not conclusive.
  • SummitQ soil test modelling gave an accurate prediction of optimal K fertilizer rate.
  • Grain quality was characterized by low hectolitre weights, but increasing K application improved both hectolitre and screenings quality aspects.
Lead research organisation Summit Fertilizers
Host research organisation West Midlands Group
Trial funding source Kalyx Agriculture
Related program N/A
Acknowledgments

Kalyx Australia for establishment, management and harvest of the trial site.


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 Blocked

Dandaragan 2015

Sow rate or Target density 75kg/ha
Sowing machinery

Small plot seeder with knife points and press wheels.

Sow date 26 May 2015
Harvest date Not specified
Plot size 1.8m x 10m
Plot replication 3
Herbicide

Uniform 3L/t coated on MAPSZC and GUSTO 

Pre Em: SpraySeed 3L, Triflurex 2L, Chlorpyrifos 1L   11/05/15

IBS: BoxerGold 2.5L, Sprayseed 5L, Chlorpyrifos 1L   26/05/15

Post: 15/07/15 Velocity 1L, MCPA 750 0.5L, Hasten 1%         15/07/15

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
Dandaragan, WA Brown red sandy loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Dandaragan, WA Tenosol
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 Dandaragan WA
2015 112.0mm
2014 102.7mm
2013 139.2mm
2012 161.2mm
2011 108.2mm
2010 107.4mm
2009 149.1mm
2008 142.7mm
2007 104.4mm
2006 131.2mm
2005 149.5mm
2004 140.0mm
2003 143.4mm
2002 122.8mm
2001 133.1mm
2000 175.5mm
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Dandaragan WA 2015


Observed climate information

Rainfall trial gsr (mm) 330mm

Derived climate information

Dandaragan 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

2015 trial report



Trial last modified: 23-07-2019 14:22pm AEST