Category: Orchid Doctor

AIR MOVEMENT: Improves Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Properly arranged fans blowing on plants bring good results, because air makes heat, light, humidity, etc., work together. F85-9 Read More

AIR MOVEMENT: Pros and Cons

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Why should air be changed every minute for best effects?; too much is detrimental and uneconomic, it dessicates media, increases colder temperatures; just enough is helpful by moderating temperatur... Read More

AIR POLLUTION: Sulfur Dioxide, Ozone, Ethylene

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cattleya buds and phalaenopsis buds just opening are extremely sensitive to ethylene cloudy, still weather in autumn and winter allows concentration; injury varies with degree and duration; high co... Read More

AIR SPACE: For Insulation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Ideally, the air space between two covers should be approximately one and a half inches thick; spaces of three-quarters to eight inches are used; below three-quarters inch the effectiveness is rapi... Read More

AIR, LIGHT, WATER: Essential Factors in Combination

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In cultivation, all of them are inter-reactive and must be considered in balance; basic factors given about each in plant growth; for many details refer to NZ87-73 Read More

ALARM SYSTEMS: How to Make One

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Basic requirements are a six-volt car battery, a bell or a buzzer, an ordinary bell transformer, a 24 volt A.C. relay, a set of contacts, an inexpensive bell button, a shut-off switch, extension wi... Read More

ALASKA: Growing Orchids There

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Long winter days may be a serious problem; fertilize in winter 1 tpg. 30-10-10 every two or three weeks; in summer's long days, every second watering; in osmunda water only in summer. A71-715 Read More

ALBA TYPES: Detecting in Cymbidium Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Checking foliage is not always positive; pigmentation or lack of it is not definitive; highly pigmented plants is best possibility. OA71-29 Read More

ALBINOS: In Cymbidium Breeding

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Achievements in albino plants in Australia, refer to AU81-16 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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