Response of Italian ryegrass to different fertilisers on a nutrient deficient soil

2009
CC BY 4.0

Research organisatons
Funding source

Trial details

Researcher(s) Matthew Mahoney
Year(s) 2009
Contributor Southern Farming Systems
Trial location(s) Dunkeld, VIC
Response of Italian ryegrass to different fertilisers on a nutrient deficient soil locations
Aims

To show the importance of soil testing, and linking this with applying the right nutrients.

Key messages
  • The Italian ryegrass responded well to phosphorus additions in the range of 15-60 kg P/ha and required the higher rates to be applied unless nitrogen, potassium and sulphur were also included.
  • In regard to the addition of potassium, the relatively wet year meant there was unexpectedly no negative affect on plant establishment by banding potassium fertiliser in the soil at sowing which is generally not recommended.
Lead research organisation Incitec Pivot Fertilisers
Host research organisation Southern Farming Systems
Trial funding source IPF
Related program N/A
Acknowledgments

Southern Farming Systems for helping sow the trial, Andrew Speirs for harvesting and soil sampling. 


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

Method

Crop type Weed: Ryegrass
Treatment type(s)
  • Fertiliser: Application Method
  • Fertiliser: Rate
  • Fertiliser: Type
Trial type Experimental
Trial design Replicated

Dunkeld 2009

Sow rate or Target density 20 kg/ha
Sow date 27 May 2009
Harvest date Not specified
Plot size 10m x 1.5m
Plot replication 4
Herbicide

Roundup Powermax at 4L/ha applied the day prior to sowing

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Download results

Trial results Table 1

# Variety
Treatment 1
Dry matter (t/ha)
1 Sonik Triple superphosphate, side banded drilled with seed, 30 kg P/ha 5.59
2 Sonik Triple superphosphate, side banded drilled with seed, 15 kg P/ha 5.035
3 Sonik Triple superphosphate, 60 kg P/ha 6.63
4 Sonik SuPerfect, side banded drilled with seed, 30 kg P/ha 6.985
5 Sonik Super/Potash 3&1, side banded drilled with seed, 30 kg P/ha 6.712
6 Sonik Super/Potash 3&1, broadcast, 30 kg P/ha 6.88
7 Sonik Super Cu 0.5, Mo 0.025, side banded drilled with seed, 30 kg P/ha 7.282
8 Sonik Single superphosphate, broadcast, 30 kg P/ha 5.098
9 Sonik Pasture Starter, side banded drilled with seed, 30 kg P/ha 6.084
10 Sonik NPKS 27-0-21-0, side banded drilled with seed, 0 kg P/ha 4.24
11 Sonik NPKS 19-8-10-6, side banded drilled with seed, 30 kg P/ha 8.87
12 Sonik MAP-S, side banded drilled with seed, 30 kg P/ha 6.604
13 Sonik MAP, side banded drilled with seed, 30 kg P/ha 8.335
14 Sonik Granulock 15, side banded drilled with seed, 30 kg P/ha 7.702
15 Sonik DAP, side banded drilled with seed, 60 kg P/ha 7.709
16 Sonik DAP, side banded drilled with seed, 30 kg P/ha 5.999
17 Sonik DAP, side banded drilled with seed, 15 kg P/ha 7.477
18 Sonik DAP, broadcast, 30 kg P/ha 5.766
19 Sonik Croplift 13, side banded drilled with seed, 30 kg P/ha 6.258
20 Sonik Control - nil fertiliser 3.57

Dry matter t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Dunkeld, VIC Brown sandy clay loam
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Dunkeld, VIC Tenosol
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 Dunkeld VIC
2009 649.0mm
2008 626.2mm
2007 628.2mm
2006 579.1mm
2005 579.6mm
2004 600.7mm
2003 622.2mm
2002 595.6mm
2001 618.8mm
2000 614.6mm
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

Dunkeld VIC 2009


Observed climate information

Rainfall avg ann (mm) 687mm
Rainfall avg gsr (mm) 536mm
Rainfall trial total (mm) 562mm
Rainfall trial gsr (mm) 489mm

Derived climate information

Dunkeld 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

2009 trial report



Trial last modified: 07-11-2019 10:17am AEST