The use of low-volume and conventional applications of selected insecticides to manage the Asian citrus psyllid, Diaphorina citri Kuwayama, in commercial orange groves in Florida

Three trials were conducted in Southwest Florida Oranges to evaluate the efficacy of low-volume (LV) applications in comparison with conventional air-blast sprayers to manage the Asian citrus psyllid (ACP). In our first trial, we compared Delegate WG (spinetoram), Imidan 70W (phosmet), and Movento (spirotetramat) using LV aerial applications versus conventional air-blast applications. In our second trial, we evaluate the efficacy of two LV sprayer brands (LondonFoger™ and PropTec™) making frequent applications of horticultural mineral oil. Finally, we compared LV applications of Dimethoate4E (dimethoate) and Movento (spirotetramat) with conventional air-blast applications of the same materials. Results indicate that conventional ground applications are in general efficient at reducing populations of ACP in the field. The efficacy of LV applications depends of the material used. Frequent LV applications of mineral oil seem to be effective at maintaining ACP populations low reducing the need to use other more toxic insecticides after the dormant applications.