Efficacy of Selected Insecticides for Chemical Control of the African Citrus Psyllid, <i>Trioza erytreae</i> (Psylloidea: Triozidae)
Paula Molina,
Estrella Hernández-Suárez,
Rositta Rizza,
María Teresa Martínez-Ferrer,
José Miguel Campos-Rivela,
Nuria Agustí,
Felipe Siverio,
Aurea Hervalejo,
Francisco José Arenas-Arenas
Affiliations
Paula Molina
Sustainable Plant Protection, Institute of Agrifood Research and Technology (IRTA), 43870 Amposta, Spain
Estrella Hernández-Suárez
Department of Plant Protection, Canary Institute of Agricultural Research (ICIA), 38200 La Laguna, Spain
Rositta Rizza
Department of Plant Protection, Canary Institute of Agricultural Research (ICIA), 38200 La Laguna, Spain
María Teresa Martínez-Ferrer
Sustainable Plant Protection, Institute of Agrifood Research and Technology (IRTA), 43870 Amposta, Spain
José Miguel Campos-Rivela
Sustainable Plant Protection, Institute of Agrifood Research and Technology (IRTA), 43870 Amposta, Spain
Nuria Agustí
Sustainable Plant Protection, Institute of Agrifood Research and Technology (IRTA), 08348 Cabrils, Spain
Felipe Siverio
Department of Plant Protection, Canary Institute of Agricultural Research (ICIA), 38200 La Laguna, Spain
Aurea Hervalejo
“Las Torres-Tomejil” Center, Department of Agri-Food Engineering and Technology, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), 41200 Alcalá del Río, Spain
Francisco José Arenas-Arenas
“Las Torres-Tomejil” Center, Department of Agri-Food Engineering and Technology, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), 41200 Alcalá del Río, Spain
The recent spread of the African citrus psyllid, Trioza erytreae, one of the vectors of the devastating citrus disease, Huanglongbing (HLB), to parts of mainland Europe has created considerable concern. In this study, we show the efficacy of several insecticides with varying modes of action on different developmental stages of T. erytreae. In laboratory trials, spinetoram caused the highest mortality in T. erytreae eggs (between 80 and 90%), while dimethoate, lambda cyhalothrin, spinetoram, cyantraniliprole, and paraffin oil showed over 90% mortality on nymphs. Dimethoate, spinetoram and paraffin oil also demonstrated high efficacy against adults. In winter field conditions, dimethoate showed the best results to control T. erytreae nymph populations, and lambda cyhalothrin showed persistent egg control. Our results support the use of different insecticides to control T. erytreae for adults in winter, and for egg and nymph populations in spring and summer.
