TABLE 2.
Psyllid counts (mean ± SE) and repellency (%) of 41 plant species sorted in order of decreasing repellence
| Test plant species | Psyllid number | Repellence (%) |
t test Treatment versus control |
|
|---|---|---|---|---|
| Test | Control | |||
| Mimosa bimucronata | 4.33 ± 0.47 | 31.33 ± 1.70 | 75.72 | ** |
| Capsicum annuum | 4.67 ± 1.25 | 29.33 ± 3.68 | 72.53 | ** |
| Lantana camara | 5.33 ± 1.25 | 23.00 ± 1.63 | 62.37 | ** |
| Gynura bicolor | 4.33 ± 0.94 | 18.67 ± 2.36 | 62.35 | ** |
| Camptotheca acuminata | 4.33 ± 1.25 | 17.00 ± 1.63 | 59.40 | ** |
| Nicotiana tabacum | 5.67 ± 0.94 | 17.67 ± 1.25 | 51.41 | * |
| Psidium guajava | 5.67 ± 0.47 | 16.67 ± 1.25 | 49.24 | * |
| Tuberosum rottl | 8.33 ± 1.25 | 21.00 ± 2.16 | 43.20 | * |
| Cinnamomum burmanni | 6.67 ± 2.05 | 15.67 ± 2.49 | 40.29 | n.s. |
| Bidens tripartita | 9.33 ± 1.25 | 21.33 ± 1.7 | 39.14 | * |
| Melia azedarach | 7.33 ± 0.40 | 16.67 ± 2.05 | 38.92 | n.s. |
| Mentha haplocalyx | 8.00 ± 0.82 | 17.67 ± 0.94 | 37.67 | n.s. |
| Cinnamomum camphora | 7.00 ± 0.82 | 14.67 ± 3.68 | 35.39 | n.s. |
| Celtis sinensis | 9.67 ± 1.70 | 17.67 ± 3.4 | 29.26 | n.s. |
| Pittosporum tobira | 7.33 ± 0.47 | 13.00 ± 1.63 | 27.89 | n.s. |
| Allium cepa | 9.67 ± 1.25 | 16.00 ± 0.82 | 24.66 | n.s. |
| Ocimum basilicum | 10.00 ± 0.82 | 15.67 ± 1.7 | 22.09 | n.s. |
| Artemisia lavandulaefolia | 10.67 ± 1.70 | 16.33 ± 1.25 | 20.96 | n.s. |
| Rubus parvifolius | 7.67 ± 0.47 | 11.67 ± 1.25 | 20.68 | n.s. |
| Pinus massoniana | 10.33 ± 0.94 | 15.67 ± 1.25 | 20.54 | n.s. |
| Ricinus communis | 8.67 ± 1.25 | 15.67 ± 0.94 | 20.38 | n.s. |
| Imperata cylindrica | 9.33 ± 0.47 | 14.00 ± 1.41 | 20.02 | n.s. |
| Corchorus acutangulus | 9.33 ± 1.25 | 14.00 ± 1.63 | 20.01 | n.s. |
| Ginkgo biloba | 9.33 ± 1.25 | 13.67 ± 1.25 | 18.87 | n.s. |
| Tagetes erecta | 11.67 ± 2.49 | 17.00 ± 0.82 | 18.59 | n.s. |
| Polygonum perfoliatum | 9.67 ± 0.47 | 13.67 ± 0.47 | 17.14 | n.s. |
| Paliurus ramosissimus | 10.67 ± 1.25 | 15.00 ± 0.82 | 16.87 | n.s. |
| Zanthoxylum bungeanum | 11.00 ± 0.82 | 15.33 ± 1.25 | 16.45 | n.s. |
| Allium sativum | 9.33 ± 1.70 | 13.00 ± 2.45 | 16.44 | n.s. |
| Bidens pilosa | 12.00 ± 1.63 | 16.67 ± 1.25 | 16.29 | n.s. |
| Allium fistulosum | 10.33 ± 1.25 | 14.33 ± 1.25 | 16.22 | n.s. |
| Cosmos bipinnatu | 12.00 ± 0.82 | 16.33 ± 1.25 | 15.28 | n.s. |
| Osmanthus fragrans | 10.00 ± 0.82 | 13.33 ± 1.25 | 14.27 | n.s. |
| Rhodomyrtus tomentosa | 10.33 ± 1.25 | 13.67 ± 1.25 | 13.92 | n.s. |
| Xanthium sibiricum | 10.67 ± 1.25 | 14.00 ± 0.82 | 13.50 | n.s. |
| Amorpha fruticosa | 9.67 ± 1.25 | 12.67 ± 1.25 | 13.43 | n.s. |
| Cinnamomum japonicum | 12.33 ± 0.94 | 16.00 ± 0.82 | 12.95 | n.s. |
| Sapium sebiferum | 10.33 ± 1.2a | 13.33 ± 0.47 | 12.68 | n.s. |
| Coriandrum sativum | 12.33 ± 0.94 | 15.33 ± 0.47 | 10.85 | n.s. |
| Abelmoschus esculentus | 15.67 ± 1.89 | 19.00 ± 1.63 | 9.60 | n.s. |
| Crepidiastrum sonchifolium | 11.00 ± 2.16 | 13.00 ± 0.82 | 8.33 | n.s. |
*p < .05; **p < .01; n.s., not significant, p ≥ .05. For each species tested, three assessments were conducted with 40 psyllids used in each assessment. Citrus reticulata cv. Murcott was used as control plant.