บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Fungi associated with banana crown rot on field-packed fruit from the Windward Islands and assessment of their sensitivity to the fungicides thiabendazole, prochloraz and imazalil.

Johanson, A.; Blazquez, B.;

Crop Protection Year: 1992 Vol: 11 Issue: 1 Pages: 79-83 Ref: 23 ref.

1992

บทคัดย่อ

Fungi associated with banana crown rot on field-packed fruit from the Windward Islands and assessment of their sensitivity to the fungicides thiabendazole, prochloraz and imazalil.

A survey was undertaken to investigate whether the recent move to field packing, and the change from fungicide dipping to applying a fungicide-coated 'crown pad' directly to the crown, have affected the complex of fungal species that cause banana crown rot. Isolations were made from rotted banana crowns from the Windward Islands over 2 years. In general, the fungi isolated were those previously reported to cause crown rot with the most common being Colletotrichum spp., Fusarium spp. and Botryodiplodia theobromae. The sensitivity of fungal isolates to the currently used fungicide, thiabendazole (TBZ) and also to imazalil and prochloraz was tested in vitro. Most of the fungi isolated showed expected levels of sensitivity to TBZ, but some isolates of Colletotrichum were tolerant. In addition, fungi known to be relatively insensitive to TBZ, e.g. Nigrospora spp. and Penicillium spp., were isolated from diseased crowns at higher frequencies than expected. All the fungi tested, including those insensitive to TBZ, were sensitive to prochloraz and imazalil. It is suggested that these fungicides might also be considered as alternatives to TBZ for incorporation into crown pads.