Category: Orchid Doctor

DAMP-OFF: Caused by Water Mold Pythium Ultimum

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The enemy of community pot plantings; makes seedlings turn watery; spray pots with Physan Anti-Damp or Natriphene monthly; it also attacks mature plants; high humidity and high temperatures favor i... Read More

DAMP-OFF: Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Spray Captan at 1 ttpg., or PCNB (Terraclor) at 1 ttpg. as pot drench; also Chinasol, oxyquinoline benzoate (Wilson Anti-Damp), or sodium-o-phenylphanate (Dowicide Ai, Natriphene, Sopp, or Topane) ... Read More

DAMP-OFF: Of Seedlings, Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Mix 1 teaspoon Truban and 2 teaspoons Benlate per gal. of water; will control all forms of damping-off; Benlate alone misses one of the most common forms. A73-1081 Read More

DAMP-OFF: Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Drench seedlings removed from flask every two weeks with Physan 20, 1.5 tpg.; or, Shield, 1 ounce to 4 gals, water. BU11 Read More

DATURA STRAMONIUM: Host Plant to Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is a host to Cymbidium mosaic and is used as an indicator for the presence of the virus. A62-219 Read More

DAY LENGTH: Increased by Artificial Light

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cattleyas may not flower with too much light, under lights and with kitchen lights on full. A86-1031Fall flowering cattleyas most respond to light; increase the day length by turning on lights for ... Read More

DAY LENGTH: Response of Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cattleya warscewiczii does not respond to day-length; if a hybrid with it in its genes, flowers in early summer and the sheath is green and fleshy, it will not respond to photoperiod control. A86-815 Read More

DAYS, SHORT: Effects

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cloudy weather can cause short days effect; stimulates flowering; weak light causes shortage of carbohydrates. A77- 36 Read More

DAYS, SHORT: How Many Required to Set Cattleya Buds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sometimes as few as five days; some crippling of flowers will show if too-long days follow the bud set period. A70-798 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More