Ecology and methods of control of the rice water weevil, Lissorhoptrus oryzophilus Kuschel in Kagoshima Prefecture. 2 Incidence of the weevil on rice transplanted at different times.

To determine whether the rice water weevil, Lissorhoptrus oryzophilus KUSCHEL, may repeat at least two generations in paddy fields in Kagoshima Prefecture, the age structure of the weevil and its infestation were surveyed in 1985 in Ibusuki City, by transplanting rice at 5 different times. Some of the first generation adults which had developed on early planted rice were confirmed to produce the second generation on rice transplanted from late June to early July.