Category: Culture

LIGHT, NATURAL: Requirements for Maximum Light

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For a review of excess or weak light effects and their results, refer to A67-468+; AH42+ Read More

LIGHT, NATURAL: Sunlight Relative to Sun Hdat

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For a chart in foot candles of light related to BTU per square feet per hour, refer to A68-470 Read More

LIGHTS, ELECTRIC: Blue Light

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It stimulates the opening of stomatas or spores on the leaves for more carbon dioxide to enter; doubling the amount of natural blue light increased growth by 50% or more, is claim. OIE86Nov-2; the ... Read More

LIGHTS, ELECTRIC: Interrupted to Save Electricity

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It can be done and has been proven by Thomas Young Orchids as feasible: "on" for ten minutes and "off" for thirty; can be applied in the middle of the night, from midnight to 2 A.M. approximately. ... Read More

LIGHTS, ELECTRIC: Outside Sources

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cattleya trianaei hybrids react to night light so a street light 25 feet away will stop flowering of the plant; cover plants with black sateen from 4 p.m. to 8 a.m. every night. A83-816The effect o... Read More

LIGHTS, ELECTRIC: Supplementary in Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If lamps are turned on until 11:00 P.M. in a greenhouse they will interfere with the normal photoperiod; therefore they are wasteful. A77-209Use of fluorescents or incandescents is of little or no ... Read More

CHICKEN MANURE: Utility

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Australia some growers use it composted to the exclusion of all other fertilizers. OA83-147 Read More

ANTI-TRANSPIRANTS: For Saving Divisions of Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If they have no roots, apply a dessicant such as Wilt-Pruf, Vapor Guard, NuFilm 17, Folicote, Cloud Cover, all water-soluble, biodegradable polyethylenes which when applied to pseudobulbs, etc., pr... Read More

CHARCOAL CHIPS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Hawaii, all vandaceous orchids grown in straight charcoal chips; fewer problems encountered from bacterial and fungal pests, A76-227 Read More

REST PERIOD: Not Necessary for Plants Growing Under Optimum Conditions

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago With few exceptions (such as the deciduous dendrobiums) the generalization about the necessity for a rest period is questionable; proper feeding and climate should bring frequent flowerings not inj... Read More