Saving N for a rainy day: nitrogen management after a dry finish - yields

2016

Research organisaton
Funding source

Trial details

Researcher(s) Sebastian Ie (BCG)
Year(s) 2016
Contributor Birchip Cropping Group
Trial location(s) Kalkee, VIC
Further information View external link
Saving N for a rainy day: nitrogen management after a dry finish - yields locations
Aims

To determine the effect that nitrogen applied to a barley crop that ‘hayed off’ has on wheat sown in the subsequent season.

Key messages
  • Nitrogen applied to crops that have hayed off can contribute to crop biomass and yield in the subsequent season.
  • When haying off is severe, a nitrogen (N) balance based on paddock history may be inaccurate.
  • Conservative N management delivered the best economic returns over the two years of the trial.
Lead research organisation Birchip Cropping Group
Host research organisation N/A
Trial funding source GRDC BWD00024
Related program Maintaining profitable farming systems with retained stubble
Acknowledgments

This research was funded by the GRDC as part of the Maintaining profitable farming systems in retained stubble project (BWD00024).


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

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser: Application Method
Trial type Experimental
Trial design Replicated

Kalkee 2016

Sow rate or Target density 140 plants/m²
Sowing machinery

Knife points, press wheels, 30cm row spacing

Sow date 19 May 2016
Harvest date 22 December 2016
Plot size Not specified
Plot replication Not specified
Paddock history 20156 barley; 2014 wheat
Fertiliser

Treatment specific

Herbicide

19 May              Roundup PowerMAX® @ 2L/ha + TriflurX® @ 1.5L/ha + Avadex® Xtra @ 2L/ha + Sakura® 850WG @ 118g/ha
7 July                Intervix® @ 750mL/ha + HastenTM @ 0.5%
5 August            LontrelTM Advanced @ 50mL/ha + Velocity® @ 670mL/ha + LVE MCPA 570 @ 300mL/ha + UptakeTM @ 0.5%

Insecticide

12 September            Fastac® Duo @ 250mL/ha + LorsbanTM 500EC @ 200mL/ha + BS1000 @ 0.25%

Fungicide

16 August          Prosaro® 420 SC @ 300mL/ha + SpreadWet 1000 @ 0.25%
27 September    Prosaro 420 SC @ 300mL/ha + BS1000 @ 0.25%

Seed treatment Raxil® T 1mL/kg seed
Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Variety
Treatment 1
Grain yield (t/ha)
1 Commander 0kg/ha N 0.87
2 Commander 30kg/ha N 0.75
3 Commander 60kg/ha N 0.49
4 Commander 90kg/ha N 0.33
5 Commander 120kg/ha N 0.2
6 Commander Average 0.53
7 Compass 0kg/ha N 1.55
8 Compass 30kg/ha N 1.64
9 Compass 60kg/ha N 1.3
10 Compass 90kg/ha N 1.13
11 Compass 120kg/ha N 0.85
12 Compass Average 1.29
13 Flinders 0kg/ha N 2
14 Flinders 30kg/ha N 0.72
15 Flinders 60kg/ha N 0.54
16 Flinders 90kg/ha N 0.47
17 Flinders 120kg/ha N 0.47
18 Flinders Average 0.66
19 Granger 0kg/ha N 0.43
20 Granger 30kg/ha N 0.46
21 Granger 60kg/ha N 0.17
22 Granger 90kg/ha N 0.09
23 Granger 120kg/ha N 0.02
24 Granger Average 0.24
25 La Trobe 0kg/ha N 1.18
26 La Trobe 30kg/ha N 1.33
27 La Trobe 60kg/ha N 1.07
28 La Trobe 90kg/ha N 0.89
29 La Trobe 120kg/ha N 0.75
30 La Trobe Average 1.04
31 Scope CL 0kg/ha N 1.05
32 Scope CL 30kg/ha N 0.78
33 Scope CL 60kg/ha N 0.68
34 Scope CL 90kg/ha N 0.45
35 Scope CL 120kg/ha N 0.42
36 Scope CL Average 0.68
37 Average of all varieties 0kg/ha N 1.03
38 Average of all varieties 30kg/ha N 0.95
39 Average of all varieties 60kg/ha N 0.71
40 Average of all varieties 90kg/ha N 0.56
41 Average of all varieties 120kg/ha N 0.45

Grain yield t/ha


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Observed trial site soil information
Trial site soil testing
Site Depth Type pH EC P K N A OC CAT
Kalkee, VIC 0 - 10cm 31.00 1.00
Soil conditions
Trial site Soil texture
Kalkee, VIC Clay
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Kalkee, VIC Vertosol
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 Kalkee VIC
2016 251.5mm
2015 229.4mm
2014 225.2mm
2013 243.4mm
2012 250.0mm
2011 269.6mm
2010 280.8mm
2009 282.8mm
2008 246.2mm
2007 277.2mm
2006 299.8mm
2005 334.0mm
2004 351.3mm
2003 453.4mm
2002 474.5mm
2001 535.7mm
2000 642.5mm
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

Kalkee VIC 2016


Observed climate information

Rainfall trial total (mm) 462mm
Rainfall trial gsr (mm) 374mm

Derived climate information

Kalkee VIC

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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