Variable rate technology evaluation

2011

Research organisaton
Funding source

Trial details

Researcher(s) Nicole Dimos (SPAA, Minnipa Agricultural Centre, Mark Klante (MAC Farm Manager), Brett McEvoy (Farm Hand), Peter Treloar (Trials coordinator), Linden Masters (FSG)
Year(s) 2011
Contributor Society of Precision Agriculture Australia
Trial location(s) Site 14, Minnipa, SA
Variable rate technology evaluation locations
Aims
  • To compare the effects on using variable fertiliser rates at seeding in four production zones based on yield maps, EM maps and combining both.
  • To determine if EM38 mapping adds value to yield mapping in the preparation of a VRT fertiliser strategy?
Key messages

On upper Eyre Peninsula few people use EM38 mapping to support the use of VRT. Currently yield maps and paddock knowledge are the most commonly used methods for determining production zones within paddocks. The demonstrations show that increasing fertiliser rates did not have an effect on yields but yields did follow EM38 mapped soil zones.

Lead research organisation Society of Precision Agriculture Australia
Host research organisation N/A
Trial funding source GRDC SPA000010
Related program N/A
Acknowledgments

This project was funded by the Grains Research and Development Corporation (GRDC) and run in conjunction with Eyre Peninsula Agricultural Research Foundation, SARDI Minnipa Agricultural Centre, Eyre Peninsula Natural Resources Management Board and the Eyre Peninsula Farming Systems 3 project


Other trial partners Not specified
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Method

Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
Trial type Precision agriculture
Trial design Not applicable

Minnipa 2011

Sow date May
Harvest date Not specified
Plot size Not specified
Plot replication Not specified
Fertiliser

18:20 DAP @ 30, 45, 50, 58, 60, 70, 75, 80kg/ha. Urea @0, 20, 30, 40kg/ha.

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Download results

Trial results Table 1

# Treatment 1
Grain yield (t/ha)
1 Demonstration 1 - Zone 1: VR P @ 50kg/ha 2.21
2 Demonstration 1 - Zone 1: flat rate P @ 58kg/ha 2.04
3 Demonstration 1 - Zone 2: VR P @ 60kg/ha 2.35
4 Demonstration 1 - Zone 2: flat rate P @ 58kg/ha 2.15
5 Demonstration 1 - Zone 3: VR P @ 70kg/ha 2.47
6 Demonstration 1 - Zone 3: flat rate P @ 58kg/ha 2.41
7 Demonstration 1 - Zone 4: VR P @ 80kg/ha 2.63
8 Demonstration 1 - Zone 4: flat rate P @ 58kg/ha 2.53
9 Demonstration 2 - Zone 1: VR P @ 75kg/ha 2.28
10 Demonstration 2 - Zone 1: flat rate P @ 58kg/ha 2.28
11 Demonstration 2 - Zone 2: VR P @ 60kg/ha 2.33
12 Demonstration 2 - Zone 2: flat rate P @ 58kg/ha 2.22
13 Demonstration 2 - Zone 3: VR P @ 45kg/ha 2.08
14 Demonstration 2 - Zone 3: flat rate P @ 58kg/ha 1.94
15 Demonstration 2 - Zone 4: VR P @ 30kg/ha 1.81
16 Demonstration 2 - Zone 4: flat rate P @ 58kg/ha 1.86
17 Demonstration 3 - Urea @ 0 kg/ha 1.7
18 Demonstration 3 - Urea @ 20kg/ha 1.69
19 Demonstration 3 - Urea @ 30kg/ha 1.65
20 Demonstration 3 - Urea @ 40kg/ha 1.55

Grain yield t/ha


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Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 14, Minnipa, SA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 14, Minnipa, SA Calcarosol
National soil grid Source
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

Site 14, Minnipa SA 2011


Observed climate information

Rainfall trial gsr (mm) 252mm

Derived climate information

Site 14, Minnipa SA

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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.




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Trial last modified: 30-09-2019 16:16pm AEST