Effective Use of Neonicotinoids for Protection of Citrus Seedlings From Invasion by Diaphorina citri (Hemiptera: Psyllidae)

摘要: The application of insecticides to control Diaphorina citri Kuwayama (Hemiptera: Psyllidae) is a principal component the current management for citrus greening disease or Huanglongbing. It recommended that growers apply systemic such as imidacloprid and thiamethoxam every 2 mo after seedling planting, but this practice renders seedlings insecticide-free vulnerable psyllid infestation in first mo. We evaluated risk vector invasion during period from field studies five new king mandarin, Citrus nobilis Loureiro, orchards Mekong Delta region Vietnam. psyllids were found wk, 60% trees finally infested by could be significantly reduced if insecticide applied before planting. Three systemics, imidacloprid, thiamethoxam, clothianidin, examined both net house assess how quickly they effective long their efficacy continue. High mortality >80% was attained 10 d application, level maintained 90 60 field. Based on these results, we propose use neonicotinoids protection against invasive