Abstract
AbstractCotton plants that had been damaged by spider mites (Tetranychus spp.) or by mechanical abrasion at the cotyledon stage were less likely to develop infestations of spider mites compared to controls early in the season. These are the first field results to demonstrate that induced resistance can reduce pest populations in an agricultural system. Differences in mite populations early in the season caused by induced resistance did not translate into differences in plant growth or cotton yield at harvest.RésuméVérification au champ de la résistance du coton induite par les acariensLes plants de coton qui ont été endommagées, au stade cotylédons, par des acariens ou par une abrasion mécanique, ont moins de chance que les témoins, de présenter ultérieurement des dégats dus aux acariens. C'est la première fois que des résultats montrent qu'une résistance induite peut réduire les populations dans un agrosystème. Les différences ultérieures dans les populations d'acariens, ne transparaissent pas au niveau de la croissance du coton ou de la production au moment de la récolte.
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