Upload
others
View
1
Download
0
Embed Size (px)
Citation preview
Emily K. Smith, Paula Misiewicz, Keith Chaney, David White, Dick Godwin
Precision Farming Challenges in the 21st Century
4 July 2013
Deep Tillage Minimum Tillage
Source: Kroulik et al., 2011
Source: Raghavan et al., 1978
Source: Chyba, 2012
Source: Chyba, 2012
Improved operational flexibility
Simple concept to adopt
Minimise compaction
X Still applies pressure to the soil
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
Source: CTF Europe
Chemical applications – integer multiple of base module
Base module Track width
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
X Standardised wheel centres
X Matching implement widths
X Maintaining wheel-ways
X Industry & manufacturing
limitations
X GPS investment & reliability
Limitations
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
Long term trials at Harper Adams University
• Year One: Site assessment and normalisation
• Year Two (+ Three): Plot Trials
2.1 m wheel centres
http://www.ellismachinery.co.uk/wp-content/uploads/2011/06/5346-3.jpg
4 m CTF system
TRAFFIC Random Traffic
Low Ground Pressure
Controlled Traffic Farming
TIL
LAG
E Deep Deep Deep
Shallow Shallow Shallow
Direct Drill Direct Drill Direct Drill
40m
TRAFFIC Random Traffic
Low Ground Pressure
Controlled Traffic Farming
TIL
LAG
E Deep Deep Deep
Shallow Shallow Shallow
Direct Drill Direct Drill Direct Drill
4 metres
2.1 m
1 2 2 3 3
2 3 1 2 0 3 0
1 2 2 0 1 0
Shallow Tillage Direct Drilling
1 0 2 2 0 0
• 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
0 0 0 T T
TRAFFIC Random Traffic
Low Ground Pressure
Controlled Traffic Farming
TIL
LAG
E Deep Deep Deep
Shallow Shallow Shallow
Direct Drill Direct Drill Direct Drill
Väderstad TopDown Väderstad Rapid
Deep and Shallow Tillage plots • Deep: 250mm • Shallow: 100mm
All plots
RTF Zero
RTF Deep RTF Shallow
Crop • Growth (NDVI) • Yield • Rooting characteristics • Lodging Soil • Penetrometer resistance • Bulk density • Soil water
• Neutron probe • Infiltration
Energy • Fuel usage • Draught force
• Soil degradation in agricultural production
• Traffic management solutions, aided by PA
tools
• Robust scientific investigation
• Watch this space……
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]