Newly Posted Articles

LIGHTS, ELECTRIC: In Greenhouses

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Two systems are treated, one as in an enclosed room area and the other as supplemental lighting in a greenhouse; analysis of sunlight and of various lamps given; photosynthesis sensitivity curve pr... Read More

LIGHTS, GROWING UNDER: Best Fluorescent Lamps

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Opinions vary but it was first thought that the "natur-escent" types of lamps were best but later experiments show that "Tru-Bloom" produced better growth. Hort. revs. 1983,5-289 Read More

LIGHTS, GROWING UNDER: Comparison of Lamps

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago 500 paphiopedilums grown under fluorescent lamps and the same number grown under high-pressure sodium lamps (SON/T) for nine months indicated the latter were better; also cheaper to install; they a... Read More

LIGHTS, GROWING UNDER: Personal Account

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Notes on general culture, temperature, humidity, suitable species, for considerable detail refer to Ca87(2)-14 Read More

GROWTH CHAMBER: For Germination of Seeds

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Constructed economically from an old refrigerator, with light and temperature controls; diagrams illustration; refer to A64-102+ Read More

LIGHTS, GROWING UNDER: Sodium Vapor Lamps

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The effect of one lamp shining in the neighbor's back yard all night should not disturb cymbidium's growth cycle as they are responders to temperature much more than to light; many other plants gro... Read More

PAPHIOPEDILUMS: Pollinization

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The stigma and how to find it: it is a foot-like structure suspended by the column; it hangs down into the pouch; the under surface receives the pollen. A78-309 Read More

LIGHTS, GROWING UNDER: Suitable Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago A list of 42 successful plants, hybrids and species which flowered; plant size; light intensity required; color of flowers; length of bloom; season; and comments; refer to ODA77(2)-14+Successful fl... Read More

PAPHIOPEDILUMS: Fertilizing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago They do well without it for as long as several years then become poor in condition; feed at one-fifth strength high in nitrogen weakly, not weekly; water the day before. OD86-139 Read More

LIPIDS: Growth Promoters

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The increase in yield in agricultural crops exceeds those with TRIA (Triacontanol) and they deserve testing for spraying seedlings ex-flask; commercial preparations are patented by A.J.Welebir; the... Read More