Category: Orchid Doctor

HYDROPONICS: Growing Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Granite chips and polystyrene used as media; nitrates of potash, phosphorous, calcium and magnesium used in solution; plants in pots stand in troughs of nutrient solution; refer to OR70-353Porous r... Read More

HYDROPONICS: In Orchid Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The system is not new; it makes use of such media as scoria, volcanic cinders, pumice, rock wool, manufactured resins (such as Oasis) and other media; they need no replacement and can be re-used af... Read More

HYDROPONICS: Trials

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A Laelia pumila was repotted into round pebbles and placed in a hydroponic set-up where it showed astonishing improvement; a complete unit was set up with two fertilizer solutions, one for spring t... Read More

HYDROPONICS: Use of Glass Netting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A description of a new method whereby fibres with capillary spaces raise the water with nutrients from the tray to the plant roots in a continuous, constant and sufficient method; a patented system... Read More

HYGROMETERS: Wet and Dry Bulb

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One deg. F. depression on the wet bulb equals 5% drop in humidity from 100%; if the wet bulb reads 62 deg. F. then the relative humidity is 100 less 15 or 85%; keep the water supply in the bulb ade... Read More

HYPONEX: Commercial Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Popular in Japan; composed of 7% nitrogen, 6% phosphorous and 19% potassium in one formula; results in remarkable plant growth. A70-50 Read More

HYPONEX: Required Percentage of Flowers Open

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Had one flower or more missing, crippled or damaged; plant was too small, or in bad condition; other reasons. FR123 Read More

INFLORESCENCES: Growing From Top of Pseudobulb Rather Than the Base

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is unusual; abnormal spiking does occur but infrequently with many species. A71-153 Read More

INJECTORS, SYPHON: Devices for Injecting Phosphoric or Citric Acid Into the Water Line

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Two recommended are Hydromix and Syphonex, both illustrated. A73-55 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