Category: Orchid Doctor

VIRUS IN PLANTS NAMED: In Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cymbidium mosaic virus; necrotic ringspot; diamond mottle; bar mottle; odontoglossum ringspot; for notes on identification, etc., refer to N323+ Read More

VIRUS IN PLANTS NAMED: In Dendrobium Ovules

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cymbidium Mosaic virus is not transmitted in ovule culture, A79-1247 Read More

VIRUS IN PLANTS NAMED: In Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The signs vary; sometimes the whitish spots and streaks are elongated, sometimes relatively broad and whitish; Ref. A76-206. Please omit. Insofar as determined they are free of virus. OWD Read More

VIRUS IN PLANTS NAMED: In Slc. Anzac

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago While all plants may be suspect, some may not be; many plants with virus look quite healthy; sterililize everything that contacts a suspected plant; wash the hands that touch any cut surfaces or ro... Read More

VIRUS IN PLANTS NAMED: In Wild Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago No Cymbidium Mosaic or Odontoglossum ringspot was found in 150 species in Florida and Guatemala, whereas 168 same or related plants from local growers in Florida showed 26% of them virused with rat... Read More

VIRUS IN PLANTS NAMED: Not Affecting Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago All plants of the original Oncidium Goldiana are infected with virus; this doesn't affect the quality of the flowers or the productivity. OR80-45 Read More

VIRUS IN PLANTS NAMED: Odontoglossum Ring-spot Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Characteristics = it is limited mainly to Onc. (Rossioglossum) grande; causes leaf symptoms first as necrotic spots, enlarging to form necrotic rings; leaves turn yellow, drop prematurely; no flowe... Read More

VIRUS IN PLANTS NAMED: Unsuspected in Popular Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In many commercial and private collections reed-stem epidendrums, including E. ibaguense, are infected with Cymbidium Mosaic virus and show only mild symptoms but they act as prime infectors of oth... Read More

VIRUS TRANSMISSION: By Carriers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Sucking insects such as aphids and red spider and snails and slugs should be destroyed since they are carriers of virus. OD67-50; Not true. They do not spread virus in orchids. OWD Read More

VIRUS TRANSMISSION: By Insects

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Sap sucking insects such as aphids, leaf hoppers (vector of Cattleya Mosaic); slugs, snails, red spider are carriers. OD78-95There is no evidence of transmission of virus on plants left outdoors; m... Read More