Effect of plant density on irrigated soybeans in southern NSW

2016

Research organisaton
Funding sources

Trial details

Researcher(s) Alan Boulton (NSW DPI)
Mathew Dunn (NSW DPI)
Mark Richards (NSW DPI)
Year(s) 2016
Contributor Department of Primary Industries NSW
Trial location(s) Leeton, NSW
Further information View external link
Effect of plant density on irrigated soybeans in southern NSW locations
Aims

This experiment was conducted at the NSW DPI Leeton Field Station to test the response of two commercial soybean varieties and two numbered lines for potential release, to four target sowing densities.

Key messages

• Averaged across sowing densities Djakal, N005A-80 and P176-2 yielded the highest with 3.7 t/ha, 3.8 t/ha and 3.9 t/ha respectively, while SnowyA achieved a significantly lower grain yield of 3.2 t/ha.
• Grain yield of Djakal and N005A-80 did not vary significantly between target sowing densities. Both varieties maintained high yields even at the lowest target sowing density (15 plants/m2).
• Lodging was exacerbated at higher sowing densities for all varieties except P176-2, which was consistently low across all sowing densities.
• The length of time to maturity did not vary significantly between target sowing densities for SnowyA, N005A-80 or P176-2. However, Djakal’s maturity length was extended by 4 days at the 60 plants/m2 sowing density when compared with the three lower target plant densities.

Lead research organisation N/A
Host research organisation N/A
Trial funding source GRDC DAN00192
Trial funding source DPI NSW
Related program N/A
Acknowledgments

This experiment was part of the ‘Southern NSW Soybean Agronomy Project’, DAN00192, 2014–18, with joint investment by GRDC and NSW DPI. Thank you to John Dando, Paul Morris and Gabby Napier for their operational support.


Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Oilseed: Soybean
Treatment type(s)
  • Crop: Variety
  • Sowing: Rate
Trial type Experimental
Trial design Unknown

Leeton 2016

Sow rate or Target density Multiple - please see report
Sow date 3 December 2015
Harvest date 19 April 2016
Plot size Not specified
Plot replication Not specified
Fertiliser

125 kg/ha legume starter (N=13.3%, P=14.3%, S=9%, Zn=0.81%)

Inoculant Peat slurry in-furrow injection
Other trial notes

This research paper is an extract from the publication Southern NSW Research Results 2017, available at
https://www.dpi.nsw.gov.au/agriculture/broadacre-crops/guides/publications/southern-nsw-research-results

Leeton 2016

Sow rate or Target density Not specified
Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser Not specified
Inoculant Not specified
Other trial notes

This research paper is an extract from the publication Southern NSW Research Results 2017, available at
https://www.dpi.nsw.gov.au/agriculture/broadacre-crops/guides/publications/southern-nsw-research-results

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
Leeton, NSW Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Leeton, NSW Sodosol
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 Leeton NSW
2016 126.5mm
2015 58.4mm
2014 57.8mm
2013 107.5mm
2012 189.7mm
2011 168.7mm
2010 81.7mm
2009 22.9mm
2008 30.1mm
2007 23.6mm
2006 11.2mm
2005 39.9mm
2004 23.1mm
2003 56.3mm
2002 33.9mm
2001 205.8mm
2000 325.5mm
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.

Leeton 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

2016 trial report



Trial last modified: 09-06-2023 15:46pm AEST