emily k. smith, paula misiewicz, keith chaney, david white, dick...
TRANSCRIPT
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Emily K. Smith, Paula Misiewicz, Keith Chaney, David White, Dick Godwin
Precision Farming Challenges in the 21st Century
4 July 2013
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Deep Tillage Minimum Tillage
Source: Kroulik et al., 2011
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Source: Raghavan et al., 1978
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Source: Chyba, 2012
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Source: Chyba, 2012
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Improved operational flexibility
Simple concept to adopt
Minimise compaction
X Still applies pressure to the soil
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0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Pre
ssu
re (
bar
)
MachXbib Low
MachXbib High
Axiobib Low
Axiobib High
Axiobib 1/1.6
Challenger
Source: Authors own
Direction of travel
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Source: CTF Europe
Chemical applications – integer multiple of base module
Base module Track width
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Benefits Simple concept*
Soil structure
Infiltration
Crop yields “CTF (+LGP) = 10-15% yield improvement”
Fuel, time and machinery cost savings
“70% reduction between trafficked & untrafficked”
GPS guidance and steering
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X Standardised wheel centres
X Matching implement widths
X Maintaining wheel-ways
X Industry & manufacturing
limitations
X GPS investment & reliability
Limitations
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To assess alternative traffic & tillage systems in terms of improving and maintaining:
1) soil structure;
2) crop growth and yield;
3) systems performance and economics
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Long term trials at Harper Adams University
• Year One: Site assessment and normalisation
• Year Two (+ Three): Plot Trials
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2.1 m wheel centres
http://www.ellismachinery.co.uk/wp-content/uploads/2011/06/5346-3.jpg
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4 m CTF system
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TRAFFIC Random Traffic
Low Ground Pressure
Controlled Traffic Farming
TIL
LAG
E Deep Deep Deep
Shallow Shallow Shallow
Direct Drill Direct Drill Direct Drill
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40m
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TRAFFIC Random Traffic
Low Ground Pressure
Controlled Traffic Farming
TIL
LAG
E Deep Deep Deep
Shallow Shallow Shallow
Direct Drill Direct Drill Direct Drill
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4 metres
2.1 m
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1 2 2 3 3
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2 3 1 2 0 3 0
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1 2 2 0 1 0
Shallow Tillage Direct Drilling
1 0 2 2 0 0
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• Same total run-over area (%) as RTF
• BUT….
TREATMENT
Random Traffic Farming
Low Ground Pressure
TY
RE
INFL
AT
ION
R
PE
SS
UR
E (
BA
R)
Front
1.2
0.7
Rear
1.5
0.7
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0 0 0 T T
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TRAFFIC Random Traffic
Low Ground Pressure
Controlled Traffic Farming
TIL
LAG
E Deep Deep Deep
Shallow Shallow Shallow
Direct Drill Direct Drill Direct Drill
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Väderstad TopDown Väderstad Rapid
Deep and Shallow Tillage plots • Deep: 250mm • Shallow: 100mm
All plots
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RTF Zero
RTF Deep RTF Shallow
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Crop • Growth (NDVI) • Yield • Rooting characteristics • Lodging Soil • Penetrometer resistance • Bulk density • Soil water
• Neutron probe • Infiltration
Energy • Fuel usage • Draught force
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• Soil degradation in agricultural production
• Traffic management solutions, aided by PA
tools
• Robust scientific investigation
• Watch this space……
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Paula Misiewicz, Dick Godwin, David White, Keith Chaney and
all visiting researchers
The Douglas Bomford Trust, Harper Adams University, Precision Decisions, RDS, SOYL, AS Communications,
Väderstad, Challenger
Contact:
Emily K. Smith
Crop and Environment Sciences, Harper Adams University, Newport, Shropshire, TF10 8NB
Email: [email protected]
Twitter: @emilykate1smith
mailto:[email protected]:[email protected]:[email protected]