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Home Articles Ulat tentara

Army worm (ulat tentara / grayak)

23 March 2022
2 mins read

Spodoptera mauritia acronyctoides (Guenée), Mythimna separata (Walker), Spodoptera exempta (Walker), Spodoptera litura (Fabricius) rarely destroy rice. Adult moths are nocturnal. At night, the adults eat, copulate, and migrate, while the moths rest at the base of the plant during the day. Moths are very attracted to light.

Larvae are very voracious, and attacks occur in all phases of rice plant growth, starting from seedling, especially in dry nurseries, to the filling phase. Damage occurs because the larvae eat the tops of plants at night and in cloudy weather. The larvae begin to feed on the leaf margins, leaving only the leaf bones and stems. M. separata can cut the panicle at the base and is known as the panicle neck cutting caterpillar. Use an insecticide with active ingredients such as BPMC or carbofuran if necessary.

Source: Putra, R. (2018). Hama dan penyakit tanaman padi dan deskripsi padi sawah. Balai Pengkajian Teknologi Pertanian Kepulauan Riau.