2022 Maitland Strategy

Trial In Progress


Research organisatons
Funding source
SARDI Minnipa Agricultural Centre Trengove Consulting

Trial details

Researcher(s) Sam Trengove
Nigel Wilhelm
Contact email samtrenny34@hotmail.com
Contact phone 0428 262 057
Year(s) 2022
Contributor SARDI Minnipa Agricultural Centre
Trial location(s) Maitland, SA
2022 Maitland Strategy locations

Investigate strategies for correcting K deficiency in broad-acre crops.

Key messages
Not specified
Lead research organisation SARDI Minnipa Agricultural Centre
Host research organisation Trengove Consulting
Trial funding source GRDC UOA2201-002RTX
Related program N/A

Jarrett  family, landowners

Other trial partners Not specified


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

Maitland 2022

Sow rate or Target density 120 kg/ha
Sow rate or Target density 120 kg/ha
Sow date 24 May 2022
Harvest date Not specified
Plot size 1.5m x 10m
Plot replication 4
Psuedoreplication Not specified
Plot randomisation Yes

Multiple: Please see report

Other trial notes

​This investment is designed to collect and collate data from a range of different soil types under plus and minus K fertiliser treatments to validate K responsiveness and look to ascertain if current critical K values are accurate across all soil types. The investment is also designed to demonstrate the value of tissue testing to diagnose K deficiency and validate best practice methodologies of application including banding of K which has been shown to provide benefits vs topdressing, foliar application & claying.

Colwell K in top 10 cm, 175 ppm

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Maitland, SA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Maitland, SA Sodosol
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



Derived climate information

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

Maitland SA


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

No trial reports or attachments found

Trial last modified: 08-11-2022 10:50am AEST