Newly Posted Articles

VINEGAR: To Correct the Ph of Water

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 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 over 8 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 over 8 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 over 8 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 over 8 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 over 8 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 over 8 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 over 8 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 over 8 years ago It is not spread by leaf contact but by insects and knives used to cut plants and flowers. A64-407 Read More

WATER (GENERAL): Contains 11 Grains of Sodium Per Gallon

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago But at recharging the same water contains 2 grains, which is equal to 34 ppm, a small amount for watering. A81-1093 Read More