Citrus greening disease (Huanglongbing, HLB) has infected >90% of Florida's oranges and thus growers are desperate to improve pest management strategies. In this field study, insecticide application efficacy was investigated with liquid chromatography mass spectrometry to determine if insecticide concentration and distribution were effective at killing the target pest Asian citrus psyllids (ACP). Sample discs attached to leaves were sprayed with imidacloprid and malathion at a field site in Florida. Application method, canopy height and depth, cardinal side of tree, and leaf side were considered to assess the spatial distribution of insecticides throughout citrus trees. Furthermore, ACP were inspected before and after insecticide applications to quantify psyllid population response.

中文翻译：

---

在不同施用方法下通过减少亚洲柑橘木虱的杀虫剂在各个柑橘树中的空间分布及其功效的定量

柑橘绿化病（黄龙病，HLB）已经感染了佛罗里达州超过90％的橙子，因此种植者迫切希望改善病虫害防治策略。在该田间研究中，通过液相色谱质谱法研究了杀虫剂的使用效果，以确定杀虫剂的浓度和分布是否能有效杀死目标有害生物亚洲柑橘木虱（ACP）。在佛罗里达的田地上，将附着在叶片上的样品圆片喷洒吡虫啉和马拉硫磷。考虑施用方法，冠层高度和深度，树木的主要侧面和叶片侧面，以评估整个柑橘树上杀虫剂的空间分布。此外，在施用杀虫剂之前和之后都要检查ACP，以量化木虱种群反应。