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Influence of additional Potassium on grain yield (Yenda)

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) Yenda, NSW
Influence of additional Potassium on grain yield (Yenda) 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 Yenda site had a Potassium (K) soil level (0-10cm) that exceeded 500 ppm (Colwell K) at sowing and showed no yield response to additional K applied post sowing in crop.
  • Application of K as potassium sulphate at V4 and or V8 saw no change in leaf tissue levels when compared to the control (no added K) when tissues were assessed at V8 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 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

Yenda 2019

Sow date 1 October 2019
Harvest date 31 May 2020
Plot size Not specified
Plot replication Not specified
Fertiliser

Please see Table 1 on page one of the attached report for treatment details.
Other trial notes

Previous crop: cotton (summer 2018/19 followed by winter fallow)
Variety: Pioneer Hybrid 1756
Irrigation Type: Beds in Bays
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
Yenda, NSW Red brown earth
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Yenda, NSW Kandosol
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 Yenda NSW
2019
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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.

Yenda NSW

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 15:05pm AEST