イモゾウムシの加害に対するサツマイモの要防除被害水準
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- 安田 慶次
- 沖縄県農業試験場
書誌事項
- タイトル別名
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- Control Threshold on Sweet Potato, Ipomoea batatas L., Damaged by the West Indian Sweet Potato Weevil, Euscepes postfasciatus (Fairmaire)(Coleoptera: Curculionidae).
- イモゾウムシ ノ カガイ ニ タイスル サツマイモ ノ ヨウボウジョ ヒガイ
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説明
To obtain the control threshold for the West-Indian Sweet Potato Weevil, the relationship between the occurrence of sweet-potato stems injured by the larvae and the proportion of damaged tubers at harvest was studied in both insecticide-treated and untreated plots. The ratio of damaged tubers at harvest was high in plots where injured stems occurred early and/or the proportion of injured stems was high. The regression equation, Y=20.83+0.95X (r=0.639*) expresses the relationship between the proportion of damaged tubers at harvest (Y) and the percentage of injured stems on day 75 day after planting (X). Based on this modified equation, the control threshold level of stems injured during the growing period for a tolerable injury level (13.6% of tubers damaged at harvest) was estimated to be 5%. The insecticide application for this control threshold was as effective as the conventional application; three applications could be reduced to two.
収録刊行物
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- 日本応用動物昆虫学会誌
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日本応用動物昆虫学会誌 41 (4), 201-207, 1997
日本応用動物昆虫学会
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詳細情報 詳細情報について
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- CRID
- 1390001206448403712
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- NII論文ID
- 110001124498
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- NII書誌ID
- AN00186121
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- ISSN
- 13476068
- 00214914
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- NDL書誌ID
- 4354608
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可