Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
It is probably one of the black rot diseases; try Banrot at 1 ttpg. or Benlate at 1/2 ttpg. plus Truban at 1 ttpg. mixed. A76-403
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PSEUDOBULBS: Broken
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
To prevent infection expose the broken surface to air and allow the cells to dry. A71-1021
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PSEUDOBULBS: Cracking
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Cattleyas sometimes develop horizontal cracks or breaks in their pseudobulbs and the upper part can break off under the weight of the flowers; the cause in not known; it may be genetic; illus. AH59...
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PSEUDOBULBS: Disfigured by Horizontal Cracking
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
These unusual splits are physiological disorders which weaken the pseudobulb: and easily cause breaking, sometimes by its own weight. A85-1335
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PSEUDOBULBS: Dormant
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Too many of them on a plant often indicates that a poor root system exists. OD68-172
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PSEUDOBULBS: Formation
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Short very fat ones on cattleyas are possibly genetic in origin; it may be caused by a deficiency of boron; make 1 tpg. of Boric acid and put 2 ttpg. of this in each gal. of fertilizer solution and...
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PSEUDOBULBS: Mature
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
What constitutes maturity: it is when neither bulb or leaf is expanding, when roots are active, or inactive, but healthy during their rest period; ripe; fully made up. A70-535; OR78-177
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PSEUDOBULBS: Rootless
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
They still serve a purpose; if they have leaves and are plump, they contain and produce food. A75-803; A80-356
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PSEUDOBULBS: Rotting
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
When this happens, open up the potting mix if it is dense; watch for water with nutrient in the leaf joints which can cause bacterial damage; peat moss and sand in t he mix can also contribute to i...
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PSEUDOBULBS: Sheath
Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago
Technically called the cataphyl, the membraneous covering is a protection to the new bulb and especially to the new eye; remove it only if it is loose. A68-7
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