FUSARIUM WILT: A Rot Disease

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 5 years ago.

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Plants decline and die in a year; the cut rhizome has a band of purple in the epidermis as a sign; drench or dip in benomyl (Benlate 50W) at lttpg. AH86-74
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Fusarium Wilt Comments
FUSARIUM WILT: F. Oxysporum and F. Monoliforme They infect through the roots or cut ends; a band of purple discoloration shows; entire rhizome may be purple; cut out diseased parts; spray with Actidione 1 ttpg. (highly toxic to humans) N317 0
FUSARIUM WILT: Fusarium Monoliforme A fungus causes slimy brown rot of cymbidium seedlings and cattleya pseudobulbs and leaves; may form a white mat over fir bark and roots, preventing absorption of nutrients. OD67-13 0
FUSARIUM WILT: Fusarium Oxysporum Rather new and a serious fungus disease of roots of various genera; infects newly cut divisions; may live a year; looks like Pellicularia filamentosa; yellow and shrivelled leaves and pseudobulbs become thin and somewhat twisted; rhizome shows circle of purple in outer layers; all may be invaded; destroy all infected pieces; dip rest in Benlate 1 ttpg. and repeat two weeks later. B30 0
FUSARIUM WILT: Shiny Brown Rot On cymbidiums and cattleya seedlings and others; it can also appear as a white mat over fir bark and the roots, and prevents absorption of nutrients. Fitch: All about orchids (1981)-217 0
FUSARIUM WILT: Two Kinds Do Damage They enter through roots or rhizome; they plug the water-conducting tubules; infected parts turn purple; cut off all infection; use Actidione (using great caution) or, dip the plant in Benlate (benomyl) 1 ttpg. A66-295; A66-401+; A73-814; AH18; N317 0

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