Présentation IIRB 2024 Prévibest T. Leborgne

1. Thomas LEBORGNE
28th February 2024, 79th IIRB Congress
1
PRÉVIBEST
Apprehend the risk of soil
compaction during beet harvest

2. 2
Soil compaction …
Soil
resistance
Pressure
on soil
SOIL COMPACTION
Crops
productivity
Soil
functions
Tyres Type of soil
Humidity
Axle load
Deep soil compaction
>50 cm
(Source: SolDphy 1, ITB-Agrotransfert)
(Source: ITB)

3. 3
… during beet harvest
SEPT DEC/JAN
Beet harvest campaign
Beet harvesters are getting heavier
Risk of deep soil compaction
(> 30 cm deep)

4. 4
Farmers misreading of soil compaction
Ruts and deformations on the soil
surface, this beet harvesting
organization is creating a lot of
soil compaction
Source : Betteravenir 2023
5t/wheel
> 10t/wheel

5. 5
Project Prévibest
PRÉVIBEST Project
2020 2023
Objective : develop a prototype tool to help farmers and technicians, sugar-industry
stakeholders to understand the issue deep soil compaction generated by beet harvests and
facilitate its consideration in the organization of the harvest and in decisions at the field in
order to reduce this risk.
Tool construction Field experimentations

6. 6
Project Prévibest – Tool construction
Farmer’s beet harvesting situation Limit/reduce the risk of deep soil
compaction
Decision
making tool
Soil compaction simulation ?
TERRANIMO®
Soil compaction model
Soil datas and machines
information ?
Beet harvesting
scenarios in sugar beet
regions
Soil humidity ?
STICS®
Soil/plant/weather
model

7. 7
Project Prévibest – Advice construction
Historical soil
compaction library
TERRANIMO® STICS®
10 Years
11 types
of soil
12 weather
stations
Machines
datas
> 5 000 000 simulations
GOAL
Strategic tool
Levers of soil compaction
reduction efficiency
Risk areas depending
beet harvest date

8. 8
Project Prévibest – Field experimentations
CHEVRIERES
BOIRY
Comparison of two crops rotation:
WHEAT WHEAT WHEAT
BEET BEET
WHEAT PEA BARLEY
BARLEY WHEAT
Rotation with
repeated soil
compaction
Rotation with one
soil compaction at
the beginning
Beet
Beet
Field expérimentations results
Yields, yield components, roots
development, cultural profile,
penetrometer, etc.
Datas for decision
making tool
2019 -> 2023

9. 9
Project Prévibest – Tool functioning
TERRANIMO® STICS®
Farmer’s beet harvesting situation
Levers that can be mobilized by
farmers, tests of some solutions
according to the farmers obligations
Real time tool
DIAGNOSIS
Soil compaction
analysis
Surface at
risk
Agronomic
issue
Regeneration
time
IMPROVED SITUATION
THANKS TO ADVICE
Less soil
compaction
Less surface
at risk
Advice, alternatives

10. 10
Stakes
Contractors
calendar
Industry
calendar
Contractors beet
harvesters
Decision
making tool ?
Reasoning
making tool
Weather and soil
variability
Farmer’s
equipment
Soil compaction
risk ‘model’
Take into
consideration
constraints and limits
Bring lines
of thinking

11. 11
Conclusion
PRÉVIBEST PROJECT
Beet harvest
context
Field datas
Soil compaction
simulation
Reasoning
making tool
Farmers, technicians, sugar-industry
stakeholders
Diagnosis
Alternatives
Consequences
Take in consideration the risk of deep soil
compaction during beet harvest

12. 12
Thanks for your attention
Project team :
Thomas LEBORGNE (ITB), Damian MARTIN (AGT), Pierre DUL (ITB), Rémy DUVAL (ITB), Annie DUPARQUE
(AGT), Vincent TOMIS (AGT), Cyril BLONDIN (Tereos), Francis BAZELAIRE (Tereos), Damien ANDRIEU (Tereos),
Guillaume BRISSET (ITB)
Scientific support :
Mathieu LAMANDÉ (Univ. Aarhus)
Hubert BOIZARD (INRAE retired)