Long-term phosphorus (P) trial and evaluation of the DGT soil phosphorus test

2003 - 2011

Research organisation

Funding source

Trial details

Researcher(s)	Skye Gabb (BCG) Sean Mason (UoA) Harm van Rees (BCG)
Year(s)	2003 - 2011
Contributor	Birchip Cropping Group
Trial location(s)	Jil JIl, VIC

Long-term phosphorus (P) trial and evaluation of the DGT soil phosphorus test locations

Aims

To assess the long-term impact of a range of P fertiliser rates on crop yield and economic returns

Key messages

After nine years, applying more than 5kg P/ha had no impact on grain yield in 2011.
Consistently applying 5kg P/ha has been the most productive and profitable rate used.
The DGT soil P test will undergo commercial testing at CSBP laboratories in 2012.

Lead research organisation	N/A
Host research organisation	N/A
Trial funding source	BCG members
Related program	N/A
Acknowledgments	These projects were funded by BCG members, through their membership fees.
Other trial partners	Not specified

Download the trial report to view additional trial information

Method

Crop types	: N/A Cereal (Grain): Barley Hay: Oaten Cereal (Grain): Wheat Forage: Pea Pasture: Medic
Treatment type(s)	Fertiliser : Rate
Trial type	Experimental
Trial design	Replicated

Jil JIl 2003

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

Jil JIl 2003 Barley

Sow date	30 June 2011
Harvest date	Not specified
Plot size	Not specified
Plot replication	3
Herbicide	30 June - 2011 TriflurX 1.5L/ha, Roundup 1.5L/ha

Jil JIl 2003 Oaten

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

Jil JIl 2003 Wheat

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

Jil JIl 2003 Pea

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

Jil JIl 2003 Medic

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

Jil JIl 2004 Medic

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

Jil JIl 2004

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

Jil JIl 2004 Pea

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

Jil JIl 2004 Wheat

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

Jil JIl 2004 Oaten

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

Jil JIl 2004 Barley

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

Jil JIl 2005

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

Jil JIl 2005 Medic

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

Jil JIl 2005 Pea

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

Jil JIl 2005 Wheat

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

Jil JIl 2005 Oaten

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

Jil JIl 2005 Barley

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

Jil JIl 2006 Barley

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

Jil JIl 2006 Oaten

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

Jil JIl 2006 Wheat

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

Jil JIl 2006 Pea

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

Jil JIl 2006 Medic

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

Jil JIl 2006

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

Jil JIl 2007 Wheat

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

Jil JIl 2007 Medic

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

Jil JIl 2007

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

Jil JIl 2007 Oaten

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

Jil JIl 2007 Pea

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

Jil JIl 2007 Barley

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

Jil JIl 2008 Barley

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

Jil JIl 2008

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

Jil JIl 2008 Medic

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

Jil JIl 2008 Pea

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

Jil JIl 2008 Wheat

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

Jil JIl 2008 Oaten

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

Jil JIl 2009 Barley

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

Jil JIl 2009 Oaten

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

Jil JIl 2009 Wheat

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

Jil JIl 2009 Medic

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

Jil JIl 2009

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

Jil JIl 2009 Pea

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

Jil JIl 2010 Oaten

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

Jil JIl 2010 Barley

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

Jil JIl 2010 Pea

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

Jil JIl 2010

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

Jil JIl 2010 Medic

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

Jil JIl 2010 Wheat

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

Jil JIl 2011 Oaten

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

Jil JIl 2011 Barley

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

Jil JIl 2011 Wheat

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

Jil JIl 2011 Pea

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

Jil JIl 2011

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

Jil JIl 2011 Medic

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

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

#	Variety	Treatment 1	Treatment 2	Treatment 3	Colwell phosphorus (mg/kg)	Colwell phosphorus (PBI)	DGT (ug/kg)	Grain yield (t/ha)
1	█ Average	█ Landers site	█	█	23	160	18
2	█ Average	█ Bishes site	█	█	30	107	52
3	█ Average	█ Caldoes site	█	█	30	65	20
4	█	█ Landers site	█ Nil MAP	█ nil P				2.6
5	█	█ Landers site	█ 25kg/ha Map	█ 5.5kg/ha P				3.4
6	█	█ Landers site	█ 50kg/ha MAP	█ 11kg/ha P				4.2
7	█	█ Landers site	█ 75kg/ha MAP	█ 16.5kg/ha P				4.5
8	█	█ Bishes site	█ Nil MAP	█ nil P				2.1
9	█	█ Bishes site	█ 25kg/ha Map	█ 5.5kg/ha P				2.9
10	█	█ Bishes site	█ 50kg/ha MAP	█ 11kg/ha P				2.6
11	█	█ Bishes site	█ 75kg/ha MAP	█ 16.5kg/ha P				3.1
12	█	█ Caldoes site	█ Nil MAP	█ nil P				1
13	█	█ Caldoes site	█ 25kg/ha Map	█ 5.5kg/ha P				1
14	█	█ Caldoes site	█ 50kg/ha MAP	█ 11kg/ha P				1.2
15	█	█ Caldoes site	█ 75kg/ha MAP	█ 16.5kg/ha P				1

Grain yield t/ha

Colwell phosphorus mg/kg

Colwell phosphorus PBI

DGT ug/kg

Observed trial site soil information

Trial site soil testing

Not specified

Soil conditions

Trial site	Soil texture
Jil JIl, VIC	Not specified

Derived trial site soil information

Australian Soil Classification Source: ASRIS

Trial site	Soil order
Jil JIl, VIC	Calcarosol

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	Jil JIl VIC
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000

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.

Jil JIl VIC

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

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

2003 trial report

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Trial last modified: 04-12-2019 15:27pm AEST

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