Technical articles

1. Presentation

Characterization of the technique

Description of the technique:

Rémy Ballot

INRA

remy.ballot(at)grignon.inra.fr

Grignon (78)

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Limit slippage in the field by

(1) reducing tire inflation pressure (< 1 bar for work requiring high traction),

(2) replacing drive wheel tires as soon as they are worn,

(3) ballasting the tractor (40-50 kg/hp for traction work),

(4) adjusting the hitch settings according to use (long convergence for draft control work: ploughing... and short convergence for floating position work).

A slippage rate of 10% should be targeted. On the road, on the contrary, rolling resistance is limited by high inflation pressure and minimal tractor ballast.

Implementation period On established crop

Spatial scale of implementation Farm

Application of the technique to...

All crops: Easily generalizable

All soil types: Easily generalizable

All climatic contexts: Easily generalizable

Regulation

2. Services provided by the technique

3. Effects on the sustainability of the cropping system

"Environmental" criteria

Effect on air quality: Increasing

acidification: DECREASE

GHG emissions: DECREASE

Effect on fossil resource consumption: Decreasing

fossil energy consumption: DECREASE

Other: No effect (neutral)

Pollutant transfer to water (N, P, pesticides ...): no effect (neutral)

Pollutant transfer to air (N, P, pesticides ...): Decrease

Optimizing traction effort helps limit fuel consumption and related sulfur dioxide emissions.

Fossil energy consumption: Decrease

Optimizing traction effort helps limit fuel consumption.

GHG emissions: Decrease

Optimizing traction effort helps limit fuel consumption and related carbon dioxide emissions.

"Agronomic" criteria

Productivity: No effect (neutral)

Soil fertility: No effect (neutral)

Water stress: No effect (neutral)

Biodiversity functional: No effect (neutral)

Other agronomic criteria: Variable

Compaction risks: Decrease

Reducing inflation pressure for heavy work also reduces compaction risks by increasing the tire contact area with the soil.

"Economic" criteria

Operating costs: No effect (neutral)

Mechanization costs: Decreasing

Optimizing traction effort helps limit fuel consumption and related costs. In the longer term, this also helps preserve equipment longevity.

Margin: Increasing

Optimizing traction effort improves profitability through better control of fuel/lubricant expenses.

"Social" criteria

Working time: Increasing

Adjusting inflation pressure, mounting and dismounting weights involve additional workload and can be difficult to implement.

Observation time: No effect (neutral)

4. Organisms favored or disadvantaged

Favored Pests

Organism	Impact of the technique	Type	Details

Disadvantaged Pests

Organism	Impact of the technique	Type	Details

Favored Beneficials

Organism	Impact of the technique	Type	Details

Disadvantaged Beneficials

Organism	Impact of the technique	Type	Details

Favored climatic and physiological accidents

Organism	Impact of the technique	Details

Disadvantaged climatic and physiological accidents

Organism	Impact of the technique	Details

5. For more information

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-Savary C. (CA 50)

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