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Insects 2016, 7(3), 35; doi:10.3390/insects7030035

Repellent Activity of Botanical Oils against Asian Citrus Psyllid, Diaphorina citri (Hemiptera: Liviidae)

1
Citrus Research and Education Center, Entomological and Nematology Department, University of Florida, 700 Experimentation road, Lake Alfred, FL 33850, USA
2
North Florida Research and Education Center, Entomological and Nematology Department, University of Florida, 155 Experiment Road, Quincy, FL 32351, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Errol Hassan
Received: 4 May 2016 / Revised: 30 June 2016 / Accepted: 11 July 2016 / Published: 14 July 2016
(This article belongs to the Special Issue Plant Extracts as Insecticides in Pest Control)
View Full-Text   |   Download PDF [1242 KB, uploaded 14 July 2016]   |  

Abstract

The Asian citrus psyllid, Diaphorina citri Kuwayama, is the insect vector of the pathogen causing huanglongbing. We selected three botanical oils to evaluate behavioral activity against D. citri. In laboratory olfactometer assays, fir oil was repellent to D. citri females, while litsea and citronella oils elicited no response from D. citri females. In choice settling experiments, D. citri settled almost completely on control plants rather than on plants treated with fir oil at a 9.5 mg/day release rate. Therefore, we conducted field trials to determine if fir oil reduced D. citri densities in citrus groves. We found no repellency of D. citri from sweet orange resets that were treated with fir oil dispensers releasing 10.4 g/day/tree as compared with control plots. However, we found a two-week decrease in populations of D. citri as compared with controls when the deployment rate of these dispensers was doubled. Our results suggest that treatment of citrus with fir oil may have limited activity as a stand-alone management tool for D. citri and would require integration with other management practices. View Full-Text
Keywords: citrus greening disease; essential oil; repellent; push-pull; integrated pest management citrus greening disease; essential oil; repellent; push-pull; integrated pest management
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kuhns, E.H.; Martini, X.; Hoyte, A.; Stelinski, L.L. Repellent Activity of Botanical Oils against Asian Citrus Psyllid, Diaphorina citri (Hemiptera: Liviidae). Insects 2016, 7, 35.

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