Efficiency of Neoseiulus cucumeris and Franklinothrips vespiformis for controlling thrips in rose greenhouses
Résumé
The two thrips species Frankliniella occidentalis Pergande and Thrips tabaci Lindeman [Thysanoptera: Thripidae] are serious pests of greenhouse roses in the Mediterranean region. The present study was undertaken in 2005 and 2006 in two 130 m(2) greenhouses in the South of France (Nice), on three varieties of roses: 'Aubade', 'Miss Paris' and 'Sayonara'. Integrated pest control using Neoseiulus cucumeris Oudemans [Acarina: Phytoseiidae] supplemented by Franklinothrips vespiformis Crawford [Thysanoptera: Aeolothripidae] successfully limited the populations of thrips and kept them below the economic threshold. Under our experimental conditions, F. vespiformis did not become established on the crop. Among the three varieties, 'Aubade' (cream) and 'Sayonara' (yellow) were more severely attacked by the thrips than 'Miss Paris' (red), however the damage was especially visible on 'Aubade'.