Effect of Intensity of Weed Infestation on the Occurrence of Leptocorisa oratorius Fabricius (Heteroptera: Alydidae) in Paddy Fields of Sri Lanka

JIRCAS Journal
ISSN 13407686
書誌レコードID(総合目録DB) AA11030483

The occurrence of Leptocorisa oratorius in weedy sites of farmers' paddy fields was investigated in reference to the adult-nymphal structure and ovarian development in female adults. Results indicated that nymphal development takes place in paddy fields before rice flowering when the fields were infested with adults whose ovaries had already matured by feeding on panicles of weeds or early-flowering rice plants. It is thus considered that weed control should be emphasized to eliminate panicle-bearing weeds in and around paddy fields before the onset of rice flowering so as to prevent advanced ovarian maturation in the adult populations which immigrate into paddy fields to lay eggs. Synchronous rice cropping is also essential for the same purpose.

著者キーワード Rice bug alternate host plants ovarian development
公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 69
終了ページ 74
権利 Japan International Research Center for Agricultural Sciences
言語 eng