Category: Orchid Doctor

TRYPTONE: What it Is

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago An accessory growth substance used in tissue culture media, a product of Difco Laboratories. A63-731 Read More

TUFA: A Volcanic Rock

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has a rough or porous textured surface, a volcanic form of limes tone. RMH Read More

TURFACE: What it Is

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A monmorillonite clay product = used as an additive to potting media; it is calcined at high temperatures; comes in granulated form; highly absorbent; provides aeration; has other qualities; refer ... Read More

TURKEY GRAVEL (GRIT): As Potting Additive

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is readily available at feed stores; cheap, clean, easily handled; cattleya roots grow into it; drains well; potting operation is simple; its weight is a disadvantage. A70-586 Read More

TURKEY GRAVEL (GRIT): Granite Chips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Comes in several sizes; an additive to poultry feed; Calcite #2. A75-27 Read More

TWIG EPIPHYTES: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchids that do not adhere strongly to their substrates and can be lifted off easily, such as Oncidium globuliferum (0. scansor), Comparettias, Ionopsis, Rodriguezia, Psygmorchis, Leochilus, etc. A... Read More

TWISTY TOP: Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A virus disease of Thailand which causes dendrobiums1 top leaves to show forms of twisting and stunting accompanied with chlorotic broken lines in the basal parts of the leaves. W9-84 Read More

ULTRAVIOLET HEAT LAMPS: Used as a Heat Lamp in the Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use it only if the light, which is toxic to plants, is shielded from them. A68-524 used for varying lengths of time = the wave-length of u.v. is harmful to plants; short periods have no effect; kin... Read More

ULTRAVIOLET LIGHT: Flower Patterns Are Enhanced Under it

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In nature the light is useful for orienting flying insects to the right flowers for pollination. A71-877 Read More

ULTRAVIOLET LIGHT: Mimicry on Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To improve fertilization and attract pollinators, this form of light produces patterns; with reference to a bulbophyllum species examined; refer to A83-362 Read More