Newly Posted Articles

VARIETAL NAMES: Or, Cultivar Names

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago An additional, non-registered name given to a specially selected clone to call attention to its superior quality; the name is written in single quote marks. OA77-49 Read More

VINEGAR: To Correct the Ph of Water

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago It is not recommended because acetates can be toxic to plants. A78-13 Read More

VIRUS TRANSMISSION: By Seed Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago It occurs with a few viruses in the plant world but it is rare in orchids. OD78-95 Read More

VIRUS - CYMBIDIUM MOSAIC: Insect Carriers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago No carrier of Cymbidium mosaic virus has been proven, but aphids and leaf hoppers, possibly scale insects and snails, are carriers of other virus. A66-55 Read More

BROWN ROT: In Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Caused by the bacillus Erwinia cypripedii; starts as small chestnut brown spot on leaf; spreads to crown then to other leaves; spreads rapidly; plant can be saved by excision; soak for hours in Nat... Read More

BROWN SPOTS: Caused by the Bacteria Pseudomonas Cattleyae

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago It affects phalaenopsis and others; control with Fermate, Benlate, then use Physan. Fi81-218 Read More

VERILUX TRU-BLOOM: Fluorescent Light for Growing Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Have been used with excellent results. A77-897 Read More

VIRUS - CYMBIDIUM MOSAIC: "0" Type of Cymbidium Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago On cattleyas it developed brown blotches on blooms days after they opened; see illus. of blotching in A70-310 for comparison; necrotic blotches are streak-like and more numerous at the base of sepa... Read More

BORDEAUX MIXTURE: In Greenhouses

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Do not use it in a greenhouse. A79-674 Read More

VIRUS - CYMBIDIUM MOSAIC: Can it Be Spread by Leaf Contact?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago It is not spread by leaf contact but by insects and knives used to cut plants and flowers. A64-407 Read More