BPMCの付着分布とトビイロウン力防除効果

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献1件

書誌事項

タイトル別名
  • Deposit Distribution of BPMC and Its Control Effect on the Brown Rice Planthopper
  • BPMCの付着分布とトビイロウンカ防除効果〔英文〕
  • BPMC ノ フチャク ブンプ ト トビイロウンカ ボウジョ コウカ エイブン
  • Studies on the Pest Control Method Utilizing Boom-type Blow Heads in Paddy Fields (Part 1)

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When regular dust (RD) and less-drifting dust (DL) of BPMC were applied to paddy fields by four kinds of boom-type blow heads, a large amount of the dusts discharged from a DL30A blow head deposited at the base zone of the pipe and a small amount at the end zone, a large amount of deposits from DMH30A and DLH30A remained at the end zone and a small amount at the base, and a large amount of deposit from Blow-in Green at the middle zone. The deposit distributions on the vertical surface showed a similar tendency to that on the horizontal surface, whereas coefficients of variation (CVs) were smaller. The horizontal deposit and vertical deposit were correlated and the slope of the regression line of RD was steeper than that of DL. Mortality of the brown rice planthopper was related with BPMC deposits. Higher correlation coefficients were observed in the relationship between the vertical deposit of BPMC and the insect mortality. The slope of dosage-response curves was steeper in RD than in DL. The average insect mortality was 81.6-84.3% for RD and 71.7-73.1% for DL. The amount of the insecticide floating in the air was two to three times larger by RD application than by DL application. The insecticide characteristics mentioned above suggest that RD is more effective than DL for control of the brown rice planthopper which lives at the foot of rice plants.

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