Category: Orchid Doctor

ROTATORS: Plant-turners

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are both standing and hanging models which will rotate your plants so that they can be exposed on all sides to the light-source and they come with a solar panel for revolving them at the idea... Read More

ROTENONE: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Local anesthesia, intestinal distress, tremors.etc. A68-583; ridiculous; just don't eat it. OWD Read More

ROTS: Fungal and Bacterial

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Those that attack roots, pseudobulbs and leaves are numerous and have difficult names; here they are listed, illustrated for recognition and their controls supplied; to avoid meeting up with any of... Read More

ROTS: Fungus or Bacterial

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Systemic controls that are recommended for use on seedlings or mature plants include such names as Benlate and Difolatan especially for fungal problems; Black rot and Brown rot are both caused by b... Read More

ROTS: On Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago This is usually Black rot; the plants can be saved by scraping all the rot off the pseudobulbs and removing the roots to allow air to inhibit the continued growth of the anaerobic bacteria which is... Read More

ROTS: Pseudobulbs

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Bulb rot or black rot is caused by Pythium and Phytophthora, which are closely related soil-inhabiting fungi whi ch spread under warm wet conditions and can be splashed about with a hose; try to ap... Read More

RUNTS: From a Hybrid Cross

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Retarded seedlings should always be weeded out and discarded. A76-611 Read More

RUPICULOUS ORCHIDS: Rock-loving Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Brazil, many small laelias are rupiculous, such as L. cinnabarina, harpophylla, milleri, rupestris, flava, briegeri; they tend, when used in hybridizing, to reduce the size of their off-spring, ... Read More

RUPICULOUS: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Growing in a rocky place; usually where vegetable matter accumulates and where moisture is not entirely absent; examples are the rock laelias, Laelia purpurata, Cattley intermedia; similar to Xerop... Read More

RUSTS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Captan and Ferbam are not used with official approval in combatting them, and to those can be added Fore/ Dithane for use on dendrobiums; some of the better ones, not yet legal are Bayleton, Trifor... Read More