Orchid doctor

BUD REMOVAL: Will Size of Cymbidium Flowers Be Improved If Alternate Buds Are Removed?

Orchid Doctor

by Robert M. Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 1 year ago.

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No appreciable change will occur; de-budded spikes are excluded from judging. A70-235
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Buds Comments
BUD INITIATION: How to Induce? When sheath is on plant, give good light intensity, short days, cool nights below 60 to 62 deg. F.; for Cattleya mossiae provide below 56 deg.F. A70-1099 0
BUD ROT: In Paphiopedilums Caused by Erwinia cyprepedii which also commonly attacks base of leaves; watering procedures do not seem to be a factor; strong air movement 24 hours a day controls it partly; drenching plants with Physan 20 might help. A71-314 0
BUDS: Black Inside Cattleya Sheaths Rather common condition; to avoid it, when the buds appear clearly in shadow, cut off 1/2 inch from top of sheath; probably caused by sudden temperature change. A81-1436 0
BUDS: Blasting In addition to ethylene, it can be caused by drying out from either high or low temperature, or low humidity. A86-1140May be caused by air pollution, or too high or too low temperatures; in cattleyas it is frequently caused by moisture condensing inside the sheath where the temperature drops widely between day and night. OIE85Mar-4 0
BUDS: Brown, Spotted and Chewed Caused by possible infestation of snails; use Sevin or Zectran. A77-314 0
BUDS: Cattleyas Injury by two-spotted mites, illus. in A73-714 0
BUDS: Deterioration in Sheath It is not a disease; plant probably lacks food reserves if it has been grown under too much shade; save buds by removing sheaths before they turn brown. A71-535 0
BUDS: Fail to Open, Dry Up and Fall Off Gas heater should be checked for ethylene emission. A77-449 0
BUDS: Initiation Within Cattleya Sheaths In response to a signal, probably of chemical origin, the base of sheath develops rudimentary flower buds; the chemical signal is a hormone triggered by day length shorter than a critical length determined by the plant, and conditioned by a favorable temperature. A71-535 0
BUDS: In Sheath on Cattleyas Stopped Growing Could be cultural or genetic; no suggestions to offer; if buds are alive remove sheath. A75-1007 0
BUDS: Kept Closed by Sticky Secretions Excessive sugar is produced, sometimes following too much light, probably on a clear frosty morning, so a slight increase in the morning temperature should solve the problem; raise the thermostat a notch. OR81-110 0
BUDS: Not Opening Fully Phalaenopsis amabilis: suspected cause is abnormally low humidity; try syringing buds to dissolve nectar. A77-702 0
BUDS: On Cattleya Plants Shrivelled and soft, drop when touched; probably ethylene toxicity is the cause; check valves and controls on burner of dynavent heater using propane as fuel. A73-155 0
BUDS: On Cattleyas, Turn Yellow and Drop The air is possibly polluted with ethylene and automobile fumes, or burning wood, an unvented heater, insufficient light, injury caused by snails, slugs, insecticide or pesticides. A76-507; A76-698 0
BUDS: On Paphiopedilums, They Turn Brown, Working Down the Stem Probably caused by bacteria; provide good air movement; water early in the day; for additional protection soak plants entire in Natriphene 1:2000 for 15 to 30 minutes. A72-534 0
BUDS: On Phalaenopsis They Blast and Drop Ethylene only is the cause, sometimes intensified by atmospheric conditions. A68-811 0
BUD STEMS: They Curl Before Emerging From Sheath Possible sticking of buds in sheaths is due to failure of the sheaths to open in a dry atmosphere. A73-208 0
BUDS: Turned Black on Cattleya Skinneri After Half-opening Probably caused by too much cold. A76-206 0
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