Lime response on acid, low rainfall, sandy soils of southwestern NSW

2024

Research organisation
Funding source

Trial details

Researcher(s) Rachael Whitworth
Year(s) 2024
Contributor Ag Grow Agronomy and Research Pty Ltd
Trial location(s) Griffith, NSW
Lime response on acid, low rainfall, sandy soils of southwestern NSW locations
Aims

The aims of this trial project were to measure:
1. The efficacy of applied lime on grain yield and profitability
2. Differences between incorporation methods
3. Differences between incorporation depths
4. Impact on phosphorous uptake efficiency

Key messages

Cultivation x lime:
• The crop performed better when cultivation to 20 cm occurred by chisel +offset. This outperformed rotary hoe and cultivation to 10cm.
• The addition of lime increased yield (0.24 t/ha) compared to un-limed plots, although the increase in yield caused a decrease in grain protein.
• There was no interaction between lime and cultivation evident. except for grain test weight.
• If only cultivating to 10 cm, liming (3 t/ha) produced optimal yield, but grain protein was reduced.
Micronutrients and P:
• The soil was responsive to P fertiliser but not micronutrients.
• The addition of P increased plant vigour, NDVI, grain test weight, and grain yield.
• An interaction of lime and micronutrients was evident for vigour, with better crop vigour in plus P, plus lime compared to all other treatments.
• Where lime was applied there were lower screenings in treatments without P, compared to treatments with no P and no lime.
Economics:
• After 3 years there has been no economic advantage of lime. Liming is producing greater revenue; however profit has been substantially lower than nil lime.
• A pulse crop is to be grown in the rotation in 2025 and should further tease out treatment differences.

Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC AGG2206-001RTX
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Farm operations : Economics
  • Fertiliser : Type
  • Soil Preparation
  • Soil Improvement
  • Soil Improvement : Application Method
  • Soil Improvement : Rate
Trial type Experimental
Trial design Replicated

Griffith 2024

Sow rate or Target density 35 kg/ha
Sowing machinery

Tractor pulled Morris with 25cm row spacing x 7 rows

Sow date 24 April 2024
Harvest date 19 November 2024
Trial design method RCBD Randomised Complete Block Design
Plot size 36m x 1.75m
Plot replication 4
Plot randomisation N
Fertiliser

80 kg/ha DAP applied to appropriate plots. 100 kg/ha of urea was spread early April, and it was top dressed with 150 kg/ha of Urea in July.

Other trial notes

This trial is part of a 3 year trial project. Refer to https://www.farmtrials.com.au/trial/40903 for details of 2022 and 2023 trials. 

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
Griffith, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Griffith, NSW Kandosol

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.

Griffith NSW

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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

2024 trial report



Trial last modified: 14-01-2026 21:27pm AEST