Category: Culture

FLOWERING TIMES: Use of Fertilizers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They affect the number and size of blooms but not the setting or the time of setting of blooms; temperature and daylight are the factors which seasonally flowering plants utilize their flowering me... Read More

FLUORESCENT LIGHTS: Ballasts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Higher priced fixtures have ballasts which are rated at .85 amps, the cheaper ones are rated at .675 amps, or 30% less light, regardless of the type of bulb used, so take a good look before you buy... Read More

FLUORESCENT LIGHTS: Details

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The life expectancy on a one-only start of a lamp is 18,000 to 20,000 hours; with a daily on/off routine the expectancy is 12,000 hours in three years; the initial brightness diminishes rapidly for... Read More

FLUORESCENT LIGHTS: Growing Under

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Three set-ups are described: Four daylight tubes with two 60W incandescents as a group. 2, Chroma 50's which simulate a summer sunshine-for colour and costs about the same as for daylight tubes, an... Read More

FLUORESCENT LIGHTS: How Effective Are the Twisted Ones?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Light is produced by the molecule in gas rubbing against each other and the more tube surface, the more light that is visible; twist-types have their surface area increased by 15 to 25%. A83-343 Read More

FLUORESCENT LIGHTS: Minimum Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In a 3ft. x 3ft. x l8in. cabinet: two 3-ft. tubes placed nine inches apart; for high-light requiring plants: three 3ft. tubes which equals 90 watts for cattleyas, encyclias, oncidiums, dendrobiums,... Read More

FLUORESCENT LIGHTS: Types Used

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One grower uses half Gro-Lux Wide Spectrum and half Vitalite Power Twist. OIE85Jan-13 Read More

FLUORESCENT LIGHTS: Vitalite Power Twist

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Main types of plants can be flowered under them if placed as close to the bulbs as possible without burning for these hours: 16 to 18 in summer; 14 to 16 in spring and fall; ten to 12 hours in wint... Read More

FLUORESCENT LIGHTS: Wattage Per Square Foot

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Tubes 12 inches above the leaves provided 20 watts, barely enough to satisfy phalaenopsis; six tubes arranged in a dome shape supplied 30 watts; a VHO-fixture having the intensity of three normal t... Read More

FLUORESCENT LIGHTS: Weak

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some stores sell cheaper units made in Taiwan and elsewhere which deliver only 300 foot-candles compared with the normal 800 fc required by plants. OIE85Jn-4 Read More