Rotate or alternate chemical families to prevent resistance development
Presentation
Technique characterization
Technique description :
| Julien Halska | INRA | julien.halska(at)grignon.inra.fr | Epoisses (21) |
| Rémy Ballot | INRA | remy.ballot(at)grignon.inra.fr | Grignon (78) |
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Avoid repeatedly using the same active ingredient (or active ingredients belonging to the same chemical family) on the same plot to prevent selecting resistant populations of bioagressors, and causing efficacy drifts that can affect fungicides, insecticides, and herbicides.
Combining several commercial products with different modes of action also helps prevent this selection.
Implementation period On established crops
Alternating chemical families can be implemented within the same crop, but also in crop rotation (for example, do not use the same fungicides on wheat and barley), diversify herbicide modes of action across different crops.
Spatial scale of implementation Plot
Application of the technique to...
All crops : Easily generalizable
All soil types : Easily generalizable
All climatic contexts : Easily generalizable
Effects on cropping system sustainability
"Environmental" criteria
Effect on air quality : Increasing
phytosanitary emissions : DECREASE
GHG emissions : NEUTRAL
Effect on water quality : Increasing
pesticides : DECREASE
Other : No effect (neutral)
Pollutant transfer to water (N, P, phyto ...) : Decrease
Alternating or combining chemical families helps prevent efficacy drifts leading to increased doses of herbicides, fungicides, and insecticides applied per hectare. The risk of transfer is reduced by reduced usage.
Pollutant transfer to air (N, P, phyto ...) : Decrease
Alternating or combining chemical families helps prevent efficacy drifts leading to increased doses of herbicides, fungicides, and insecticides applied per hectare. The risk of transfer is reduced by reduced usage.
Fossil energy consumption : no effect (neutral)
GHG emissions : no effect (neutral)
"Agronomic" criteria
Productivity : No effect (neutral)
Alternating or combining chemical families helps preserve the efficacy of available herbicides, fungicides, and insecticides.
Soil fertility : Increasing
Water stress : No effect (neutral)
Functional Biodiversity : No effect (neutral)
Other agronomic criteria : Decreasing
Risk of resistance development : Decreasing
"Economic" criteria
Operating costs : Variable
Depending on the costs of the different products used, phytosanitary costs may increase or decrease compared to systematic use of the same product. Systematic use of the same product promotes the emergence of resistances which can lead to increased phytosanitary expenses (more expensive products and in larger quantities).
Mechanization costs : No effect (neutral)
Margin : Variable
But rather increasing by limiting the risk of resistance development.
"Social" criteria
Working time : No effect (neutral)
Observation time : No effect (neutral)
Favored or disadvantaged organisms
Disadvantaged bioagressors
| Organism | Technique impact | Type | Details |
|---|---|---|---|
| weeds | weeds | All bioagressors targeted by treatments. The effectiveness of this technique depends on the products used and application conditions. | |
| pathogen (bioagressor) | pathogen (bioagressor) | All bioagressors targeted by treatments. The effectiveness of this technique depends on the products used and application conditions. | |
| pest, predator or parasite | pest, predator or parasite | All bioagressors targeted by treatments. The effectiveness of this technique depends on the products used and application conditions. |
For further information
- Herbicides : modes of action and fate
- -Gasquez J.
Les mots de l'Agronomie, Website, 2015
- Diseases of cereal straw - Institutes and public authorities recommend diversifying control methods
- -Maumené C. (Arvalis)
Agricultural Perspectives no. 386, p55-57, Press article, 2012
- Phytosanitary products : Managing resistances
- -Geist P., Rohrbacher P., Fritsch L., Lemercier G., Michaël R. (CA 67)
Technical brochure, 2005
- Resistance to herbicides
- -Gasquez J.
Les mots de l'Agronomie, Website, 2015
Keywords
Bioagressor control method : Chemical control
Mode of action : Catch-up
Type of pesticide use strategy : Efficiency
Appendices
Défavorise les bioagresseurs suivants
