Species and seasonal fluctation of rice ear injurious bugs and peckey rice
1988
Goh, H.G. | Kim, Y.H. | Lee, Y.I. | Choi, K.M. (Rural Development Administration, Suwon (Korea R.). Agricultural Sciences Inst.)
The number of bug species around the paddy field, seasonal fluctuation of two bugs, Eysarcoris parvus Uhler and Togo hemipterus Scott, and the status of peckey rice by some rice ear injurious bugs were studied. A total of 26 bug species and 2 unrecorded species in Korea, Cimis obligues Horvath and Dimorphopterus japonicus Midaka were collected and identified in the bank around the paddy field in Yongin, 1986. Major bug species were Togo hemipterus, Eysarcoris parvus, Stictopleurus crassicornis, and Aeschynteles maculatus. T. hemipterus and E. parvus passed 2 generations throughout a year and overwintered in adult stage. The adult1670of two bugs began to move out of the hibernocula from late May and late April, respectively. The peak densities of the first generation occurred in early August and mid July, respectively. The peak of the second generation appeared in early September in T. hemipterus and it was not clear in E. parvus. Dolycoris baccarum, Eysarcoris ventralis, Aeschynteles maculatus, Eysarcoris parvus, Aeschynteles sapporensis, Togo hemipterus, Stictopleurus crassicornis, Pachygrontha antennata, Eurydema rogosa, and Rhyparochromus albomaculatus were found to cause peckey rice. The first five species of the bugs were more injurious than the other five bug spec
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