Influence of nitrogen and plant growth regulator application on grain yield of barley – Marrar 2017

2017

Research organisaton
Funding sources

Trial details

Researcher(s) Felicity Harris
Hugh Kanaley
Danielle Malcolm
Jessica Simpson
Year(s) 2017
Contributor Department of Primary Industries NSW
Trial location(s) Marrar, NSW
Further information View external link
Influence of nitrogen and plant growth regulator application on grain yield of barley – Marrar 2017 locations
Aims

The primary objective of PGRs is to decrease plant height to reduce lodging, however, this can also indirectly increase grain yield. If the crop is not lodged, the effect of PGR application on yield is more variable. The influence of varying levels of N and PGR timing on the grain yield of four elite barley cultivars, including the recently released RGT PlanetA, was investigated at Marrar in 2017.

Key messages

• Plant growth regulators (PGRs) had minimal effects on the plant height of different barley varieties.
• PGRs reduced some lodging, however, this occurred predominantly in the taller cultivar (cv) prone to lodging (cv. CompassA).
• Neither PGR nor nitrogen (N) application increased grain yield.
• PGRs should be strategically applied, taking into account the interaction between cultivar, seasonalconditions, and application timing.

Marrar NSW 2017

A complete factorial design consisting of treatment combinations of cultivars, applied N and plant
growth regulators were included.

Lead research organisation Department of Primary Industries NSW
Host research organisation N/A
Trial funding source GRDC DAN00173
Trial funding source DPI NSW
Related program Management of Barley and Barley Cultivars for the Southern Region
Acknowledgments

This experiment was part of the project ‘Management of barley and barley cultivars for the southern region’, DAN00173, 2013–18, with joint investment by GRDC and NSW DPI.
We acknowledge the technical support of Hayden Petty, Cameron Copland, Warren Bartlett, Greg McMahon and Sharni Hands.


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

Method

Crop type Cereal (Grain): Barley
Treatment type(s)
  • Crop: Variety
  • Fertiliser: Rate
  • Fertiliser: Timing
  • Growth regulator: Rate
  • Growth regulator: Timing
Trial type Experimental
Trial design Replicated

Marrar 2017

Sowing machinery

Direct drilled with DBS tines, 250 mm row spacing, GPS auto-steer system

Sow date 10 May 2017
Harvest date Unknown
Plot size Not specified
Plot replication Not specified
Fertiliser

80 kg/ha mono-ammonium phosphate (MAP) applied at sowing (N: 10, P [phosphorus]: 22, K [potassium]: 0, S [sulfur]: 2)
Variable rates of urea (N: 46) applied as per experiment treatments

Herbicide

Pre-emergent (9 May): Diuron® 900 WDG at 350 mL/ha + Bouncer® at 350 g/ha
Post-emergent (11 Aug): LVE MCPA 570 at 400 mL/ha + Paradigm™ at 25 g/ha + Uptake™ spraying oil at 500 mL/100 L water

Fungicide

Seed treatment: Hombre® Ultra at 2 mL/kg
In-crop (11 Aug): TILT®Xtra at 500 mL/ha

Pesticide

 Aphidex® WG 500 at 150 g/ha

Seed treatment Seed treatment: Hombre® Ultra at 2 mL/kg In-crop (11 Aug): TILT®Xtra at 500 mL/ha
Other trial notes

This research paper is an extract from the publication Southern NSW Research Results 2018, 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
Marrar, NSW Red chromosol
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Marrar, NSW Kandosol
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 Marrar NSW
2017 397.5mm
2016 409.5mm
2015 308.7mm
2014 262.1mm
2013 316.9mm
2012 370.8mm
2011 422.2mm
2010 441.9mm
2009 379.2mm
2008 374.0mm
2007 303.3mm
2006 317.0mm
2005 350.0mm
2004 275.7mm
2003 274.0mm
2002 271.3mm
2001 291.4mm
2000 353.2mm
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.

Marrar NSW

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

2017 trial report



Trial last modified: 08-06-2023 12:11pm AEST