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HOME > 農業技術  > 防除LABO  >第14回 ナス編&nb...

農業技術 | 防除LABO

第14回 ナス編 天敵農薬なしのIPMの巻 | 農業経営者 9月号 | (2006/09/01)

IPMの意識



専門家 ナスのハウス促成栽培で埼玉県が示している慣行の農薬使用回数は53回。これは多すぎるとしても、根岸さんは15回ですよね。特別栽培をとろうと思ったらとれるくらいになっていますが……。防除関連で、特に問題はなかったのですか。

根岸 防除回数は少ないですが、収量は4.5〜5.5t/10aほどあるので、周囲の農家と比べて劣りません。品質的には、後半でアザミウマ、特にミナミキイロアザミウマが広がったときは、かなり落ちますが、問題にならないときもあります。慣行の使用回数が多いのは、マルハナバチを使用する前がベースになっているからで、ホルモン処理と併用のままのカウント数になっているのではないでしょうか。

専門家 それにしても、殺虫剤と殺菌剤を混合して1〜2週間間隔で撒くのがナスでは一般的だと思います。何か工夫があるのではないですか。(以下つづく)
Posted by 編集部 10:26

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