Category: Culture

LIGHTS, ELECTRIC: Their Percentage of Sunlight Delivered

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago An International Colour Rendering Index exists; it provides a standard against which spectral composition can be measured; Tru-Lite tubes, for instance, measure 91% of sunlight. OR77-340 Read More

BARK, FIR: Sterilization

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It can be steam sterilized but that will hydrolize complex carbon compounds and increase its decay; no serious diseases or insects are introduced by it. A66-55 Read More

BARK, PINE: Potting Medium for Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It should be thick and free of pitch; it is dried, then ground into pieces one-quarter inch by three-quarter inch; can be used by itself or with peat moss, perlite, or redwood fiber. A72-412 Read More

POLYSTYRENE: Potting Material

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In bead form; common ingredient in Europe; an insulating material, extremely light, inert, does not saturate or rot, retains moisture on surface only; used in a mix with peat moss, sand and sphagnu... Read More

POTTING MEDIA: Guidelines for Selecting the Right One

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A chart for the main types of cultured orchids, equitants or terrestrials, with recommendations, drying-cycle times, which mounts, containers and media. A81-1323 Read More

HOLMAN BOGS: Artificial Bogs for Growing Cypripediums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They consist of a plastic liner in a hole one foot deep; contain peat soil in a layer and also soil substratum with organic matter; many other details; refer to A76-415+; A77-S24 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

LIGHT, NATURAL: Transmission Through Plastic Films and Fiberglass Panels

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Data on 12 different greenhouse coverings; refer to A64-639+ see also Days,Short; Foot-candles reading; Photoperiodism; Phototropism; Reflective materials Read More

LIME: Application to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A common mineral deficiency is calcium which is usually lacking in commercial fertilizers; it is sometimes supplied by means of limestone or dolomite, whose usual alkalinity is partially offset in ... Read More

DAY LENGTH: Increased by Artificial Light

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