Newly Posted Articles

COLCHICINE: What it Is

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A chemical extracted from the autumn crocus; it inhibits formation of wall matter between two cells giving cells with double normal number of chromosomes. A78-606; comparative experiment reviewed; ... Read More

COLORATION OF PLANTS: As Indicative of Flower Color

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Crosses made to produce red or dark off-spring produce plants indicative of the color at the seedling stage and can be culled or selected by the experienced grower. OA79-87 Read More

SLUGS: Table Salt Kills Them on Contact, Why Not Use it as a Drench?

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Do not use table salt as it may also kill the plants; use Slug-Geta pellets. A75-876 Read More

POTTING: Repotting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For a lot of pointers on when to do it for most popular genera and how to do it with what materials with detailed instructions and many illustrations, refer to A81-1437 Read More

IRON: In the Water Supply

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Watering directly into the pot will cause little harm to the plants; on the leaves the iron precipitates out and colors them coppery,- eventually to reduce the light intake of the leaf and weaken t... Read More

IRON: Odontoglossums Need it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Chelate of Iron should be supplied to the plants strictly according to the instructions on the label; add 5ml of GU49 (powdered iron) to the slow re lease fertilizers (30ml Osmocote, nine months re... Read More

IRON: Spray with Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If the water supply lacks iron plants can be sprayed with it. A85-205 Read More

ISOPROPANOL: As Virus Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A ten minute soak did not destroy the infectivity of Cymbidium mosaic virus. P68(4)5 Read More

CYMBIDIUMS: Pots Standing in the Wet

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In rainy conditions a film of water links all plants and from an infected one can spread phytophthora, rot, fungi, bacteria, even virus. OA80-79 Read More

PH OF WATER: Testing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Litmus paper used to determine pH is unsatisfactory because color variations are too subtle to be determined; use a colormetric method where drops of Brom Creosol Purple are added to water to get a... Read More