Category: Culture

HUMIDIFIERS: Make Them Yourself

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Using a bucket, some aquarium tubing, an air pump, nylon sheeting, plus the indespensible water and a pan to hold it, an effective humidifier can be assembled and operated; refer to Ca81-9; micro-o... Read More

HUMIDITY: Altitude Difference

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago At sea level, which is where the phalaenopsis mostly grow, 100% relative humidity means a lot more water vapour per unit volume of air than at an altitude higher up, so there is a vast difference b... Read More

HUMIDITY: Maintaining it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The relative ineffectiveness of "damping down" compared with using misters; at 5,000 feet altitude or more the amount of water carried by the air can be about one-third reduced; to maintain it in t... Read More

HUMIDITY: Measurements and Accuracy

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The often inaccurate needle-and-dial hygrometer can be calibrated in a jar using common chemical saturated solutions of known % relative humidity at 25 dC. A80-1382 Read More

HUMIDITY: New System

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Install a fan on the floor pointing upwards, with overhead water sprays not directed onto the- plants, so that humidity is increased to about 907o relative; this produces increased growth and no lo... Read More

HUMIDITY: Providing it Automatically

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago One system uses three mist sprays per nine feet of length on each side of the greenhouse, activated by means of a solenoid valve controlled by a humidistat sensor; the standard hook-up. OR85-418 Read More

HUSKY FIBER: For Equitant Oncidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago This potting medium works as well as osmunda, is claim. OIE86Sept-20 Read More

HYDRATED LIME: Source for Calcium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If the water supply, like rainwater, is low in calcium it can be supplemented at about the rate of 2.25gr. per five gallons of water; acid rain is low in calcium. AU44-97 Read More

HYDROCULTURE: Pros and Cons

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Orchids grown in gravel-filled benches which are periodically flooded produce excellent plants but the roots travel and intertwine inextricably; individual containers should be used, such as plasti... Read More

HYDROPONICS: Applied to Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use man-made clay stones, a 2-2-2 nutrient solution; two styles of hydro-pots are available in sizes from four to nine inches; paphiopedilums, dendrobiums, odontoglossums and others grow successful... Read More