Perennial rice for distribution. Domesticated Asian rice, "Oryza sativa" is a short-lived plant. Most cultivars die after producing seeds, though some can regrow (ratoon) and produce a second crop under favorable conditions. In regions with mild climates, two or three crops of rice may be grown each year. Except for ratoon crops, this means that the dead stalks must be removed, the soil cultivated, and new seed sown every few months. In contrast, the wild ancestor of Asian rice, "Oryza rufipogon", often lives for many years, setting seed each year and spreading vegetatively. In addition to these perennial types, some "O. rufipogon"
Scirpophaga gilviberbis on "Oryza" species, including "Oryza sativa". Scirpophaga gilviberbis Scirpophaga gilviberbis is a moth in the Crambidae family. It was described by Zeller in 1863. It is found on the Comoros and in the Democratic Republic of Congo, Kenya, South Africa, Zambia, India, Indonesia (Java, Sulawesi), Myanmar, Singapore, Thailand and Vietnam. The wingspan is 20–22 mm for males and 23–35 mm for females. The forewings of the males are ochreous with some fuscous scales. The hindwings are white, except for the costal area and the apex which are ochreous. Females have white fore- and hindwings. The anal tuft is whitish grey