The effect of full moon against flying of Spodoptera exigua moths: implication on monitoring and preventing the pest infestation on onion
Penulis/Author
Prof. Dr. Ir. Fransiscus Xaverius Wagiman, S.U. (1); DIAN LESTARI (2); MUHAMMAD SYAWAL NASUTION (3); Prof. Dr. Ir. Edhi Martono, M.Sc. (4); Prof. Dr. Ir. Witjaksono, M.Sc. (5); Dr. Suputa, S.P., M.P. (6)
Tanggal/Date
2017
Kata Kunci/Keyword
Abstrak/Abstract
The larvae of Spodopera exigua Hubner (Lepidoptera: Noctuidae) is the noxious pest on onion. Studies revealed that flying of the S. exigua moths was significantly affected by the natural illumination. Number of captured male moths using yellow sticky trap with sex pheromone during night (3.83 moths/10 traps) was significantly more than during the day (0.30 moths/10 traps), and at full moon (5.80 moths/10 traps) was significantly more than before and after full moon i.e. 2.94 and 2.77 moths/ 10 traps, respectively. Suitable number of traps to monitor infestation of the S. exigua moths was 3 traps/2.000 m2. Meanwhile, netting with 20 mesh of screen was very effective to prevent the female moths to lay their eggs on onion leaves, and there were no eggs, larvae, and damaged plants observed in the treated plots. Etiolation was observed on netting treatment, however the onion yield on treated plots (3.9 kg/m2) was significantly higher than on untreated plots (2.3 kg/m2).
