The present invention provides a laborsaving and novel method for controlling Sigatoka efficiently and having advantages, e.g. a low environmental load, capable of reducing a disseminated dosage, etc.A method for controlling Sigatoka is characterized by inject treating an effective dose of Sigatoka controlling agent into the sheath (pseudostem) of plant corpus of Musaceae plant that is the occurrence or predicts occurrence of Sigatoka to control Sigatoka occurring in plant corpus of Musaceae plant.本發明提供一種為將葉斑病(Sigatoka)有效率地防除而有環境負荷少且可能減低散布藥劑量等優點之省力的新穎之防除方法。葉斑病之防除方法,其特徵為:於發生或預測會發生葉斑病之芭蕉科植物之植物體之葉鞘部(偽莖部)注入有效量葉斑病防除劑來處理,以防除前述發生於芭蕉科植物之植物體之葉斑病。
