Optimising phosphorus fertiliser rates on alkaline soils

2000

Research organisaton

Trial details

Researcher(s) N/A
Year(s) 2000
Contributor Birchip Cropping Group
Trial location(s) Birchip, VIC
Charlton, VIC
Donald, VIC
Sea Lake, VIC
Optimising phosphorus fertiliser rates on alkaline soils locations
Aims

To identify the critical P fertiliser rates for a broad range of crops on different soil types in the southern Mallee and northern Wimmera. This trial was also undertaken in 1999.

Key messages

Fertiliser P trials were undertaken on wheat, barley, canola, field pea, lentil and faba beans at four sites over two seasons (1999 and 2000). Fertiliser P is rapidly fixed and becomes unavailable to plants on neutral to alkaline soils. P responses over the two seasons indicate that for wheat, barley, canola and field pea the responses to P fertiliser were insignificant or if a response did occur it occurred from 0 to 6 kg P/ha. It appears that faba beans do respond to higher rates of P (up to 18 kg P/ha), which was a consistent result in both years. It is not clear how lentils respond to P fertiliser. It is recommended to base a P fertiliser application rate on:

  • long-term P balance (P fertiliser applied minus the P exported in grain),
  • soil test result (soil P test of above 15ppm Colwell appears to indicate adequate Phosphorus levels), and
  • whole farm expenditure (not more than 10 to 12% of gross farm income expenditure on fertiliser (inclusive of N and S) - as an average of a minimum of 5 years).
Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop types Cereal (Grain): Wheat Oilseed: Canola Grain Legume: Faba beans Grain Legume: Field peas Grain Legume: Lentils Cereal (Grain): Barley
Treatment type(s)
  • Crop: Type
  • Fertiliser: Application Method
  • Fertiliser: Rate
Trial type
Trial design

Birchip 2000 Wheat

Sow date Not specified
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Birchip 2000 Canola

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Birchip 2000 Faba beans

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Birchip 2000 Field peas

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Birchip 2000 Lentils

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Birchip 2000 Barley

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Charlton 2000 Barley

Sow date Not specified
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Charlton 2000 Wheat

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Charlton 2000 Canola

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Charlton 2000 Faba beans

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Charlton 2000 Field peas

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Charlton 2000 Lentils

Sow date Not specified
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Donald 2000 Barley

Sow date Not specified
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Donald 2000 Wheat

Sow date Not specified
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Donald 2000 Canola

Sow date Not specified
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Donald 2000 Faba beans

Sow date Not specified
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Donald 2000 Field peas

Sow date Not specified
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Donald 2000 Lentils

Sow date Not specified
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Sea Lake 2000 Barley

Sow date Not specified
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Sea Lake 2000 Wheat

Sow date Not specified
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Sea Lake 2000 Canola

Sow date Not specified
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Sea Lake 2000 Faba beans

Sow date Not specified
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Sea Lake 2000 Field peas

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Sea Lake 2000 Lentils

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
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
Birchip, VIC Not specified
Charlton, VIC Not specified
Donald, VIC Not specified
Sea Lake, VIC Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Birchip, VIC Vertosol
Charlton, VIC Sodosol
Donald, VIC Vertosol
Sea Lake, VIC Lake
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

Derived climate information

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

Birchip VIC

Charlton VIC

Donald VIC

Sea Lake VIC

Birchip VIC

CAUTION: Trial site locality unknown; Climate data sourced from Birchip Cropping Group office location
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Charlton VIC

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Donald VIC

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Sea Lake 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

2000 trial report



Trial last modified: 17-05-2023 10:57am AEST