Category: Orchid Doctor

VIRUS TRANSMISSION: By Mechanical Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Mainly by contaminated knives, scissors, stakes, wires, string and dirty hands. OD78-95 Read More

VIRUS TRANSMISSION: By Seed Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It occurs with a few viruses in the plant world but it is rare in orchids. OD78-95 Read More

VIRUS TRANSMISSION: By Vegetative Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago All parts of a plant are invaded, except possibly the seed and all cuttings and keikis are infected if the main plant was infected. OD78-95 Read More

VIRUS TRANSMISSION: Virus Transmission by Seed-pod

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Virus disease can be transmitted by green-pod culture although the seed can be removed from the pod uncontaminated; the seeds are virus-free. A75-680 Read More

VIRUS: Basics and Prospects for the Future

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants, unlike animals lack a protective antibody system but virus is rarely if ever seed-transmitted, even when both parents are infected; it is unfortunate that virus do not kill their hosts; the... Read More

VIRUS: Bean Yellow Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Allied to the Potyvirus group that have insect vectors, mostly aphids; Japanese in origin, recently reported in the U.S. OIE86Jan-9; may be spreading and could cause widespread problems. AH86-3;9 Read More

VIRUS: Cattleya labiata Var. Alfrediana

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A famous variety originally hailed for its extraordinary coloring about 1890, recognized as a virus infection in 1949, possibly a first for orchids. A83-1162 Read More

VIRUS: Cigarette Transmittal

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Tobacco Mosaic Virus is highly prevalent in tobacco and is a problem for smokers working with susceptible plants; orchids when inoculated with TMV develop only a local necrotic infection which does... Read More

VIRUS: Control by Chemicals

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The use of household bleach is recommended in concentrations varying from 20% upward to full strength, timed from 30 seconds to 10 minutes; refer to A82-725 Read More

VIRUS: Control by Flame or Heat

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A resume of procedures recommended; to A82-726 Read More