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Influence of additional Potassium on grain yield (Kerang)

2019

Research organisation
Funding source
Field Applied Research (FAR) Australia
<abbr title='Grains Research and Development Corporation'>GRDC</abbr>

Trial details

Researcher(s) Damian Jones
Ben Morris
Nick Poole
Tom Price
Michael Straight
Year(s) 2019
Contributor Field Applied Research (FAR) Australia
Trial location(s) Kerang, VIC
Influence of additional Potassium on grain yield (Kerang) locations
Aims

To assess the influence of additional Potassium fertiliser (Potassium Sulphate) used in crop on grain yield, tissue and grain concentration on soil with adequate K indices.

Key messages
  • The Kerang site had a Potassium (K) soil level (0-10cm) that exceeded 600 ppm (Colwell K) at sowing and showed no yield response to additional K applied in crop.
  • As was the case at Yenda the application of K as potassium sulphate at V4 or V8 saw no change in leaf tissue levels when compared to the control (no added K) assessed at V10 or tasselling.
  • Harvest results showed no response to added potassium, indicating that the soil was able to supply the required potassium to the crop.
  • There was no evidence of luxury uptake of K in tissue and grain samples (assessed in untreated, 40 (tissue only) and 80 kg /ha K).
Lead research organisation Field Applied Research (FAR) Australia
Host research organisation Field Applied Research (FAR) Australia
Trial funding source GRDC FAR1906-003RTX
Related program N/A
Acknowledgments N/A
Other trial partners Irrigated Cropping Council
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Maize
Treatment type(s)
  • Fertiliser : Rate
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Kerang 2019

Sowing machinery

Treatment K Rates (kg K/ha) applied at V6: 0, 20, 40, 40+40 (V6&v10), 80
Sow date 29 October 2019
Harvest date 22 April 2020
Plot size Not specified
Plot replication Not specified
Fertiliser

Treatment detials are listed in Table 1 on page one of the attached trial report.
Other trial notes

Previous crop: Grass dominant pasture (3 years)
Variety: Pioneer Hybrid 1756
Irrigation Type: Border check irrigation
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
Kerang, VIC Clay
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Kerang, VIC Vertosol
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 Kerang VIC
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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Kerang VIC

NOTE: Exact trial site locality unknown - Climate data may not be accurate
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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

2019 trial report



Trial last modified: 08-01-2025 15:03pm AEST