Table 4. Responses of Diaphorina citri when assayed with synthetic volatiles identified from Las-infected and non-infected citrus plants.

Chemical	Dosage (µg)	Proportion of D. citri responding to treatment arm	Proportion of D. citri responding to control arm	χ2 value	P value
†β-ocimene (positive control)	0.001	52.22	47.78	0.18	0.67
	0.01	54.46	45.54	0.8	0.37
	0.1	53.19	46.81	0.38	0.54
	1	60.44	39.56	3.97	0.05*
	10	61.46	38.54	5.04	0.02*
	100	62.77	37.23	6.13	0.01*
D-limonene	0.001	56.06	43.94	0.97	0.32
	0.01	60.87	39.13	2.17	0.14
	0.1	54.39	45.61	0.44	0.51
	1	54.65	45.35	0.74	0.39
	10	60.24	39.76	3.48	0.06
	100	61.54	38.46	4.85	0.03*
Methyl salicylate	0.001	54	46	0.32	0.57
	0.01	60.44	39.56	3.97	0.04*
	0.1	54.76	45.24	0.38	0.54
	1	45.12	54.88	0.78	0.38
	10	41.03	58.97	2.51	0.11
	100	39.56	60.44	3.97	0.04*
Methyl anthranilate	0.001	58.06	41.94	0.81	0.37
	0.01	57.14	42.86	0.71	0.4
	0.1	61.76	38.24	1.88	0.17
	1	57.33	42.67	1.61	0.2
	10	56.1	43.9	1.22	0.27
	100	52.27	47.73	0.23	0.63

†: β-ocimene carried 20–25% limonene. P values labeled with* are significantly different (χ² test, P<0.05). Significant P values highlighted in bold indicate attraction while remaining significant P values indicate repulsion.