Category: Ailments

VIRUS: Cigarette Transmittal

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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: In Cymbidium Alexanderi 'westonbirt'

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The original seedling was sown on a cattleya host plant's pot and was likely the source of the virus, which was distinctive from the beginning, but was never free of the "ticking" that became a sig... Read More

VIRUS: In Native and Cultivated Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Table showing incidence of CMV and ORV in 17 main genera and 5 3 miscellaneous genera; none out of 438 native genera was infected; 362 out of 1312 culti- vated genera were infected. A83-255 Read More

VIRUS: Non-viral Symptoms

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Chlorosis, spots, dots, tip and marginal burns, scorching, water-soaked areas, green and yellow flecking, injuries due to insect feeding, pesticide spray damage; accurate diagnosis is necessary. AH... Read More

VIRUS: Tobacco Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Also called odontoglossum ringspot, is ineffective when sap is diluted 100,000 times, or when heated to 90 dC (194 dF) for ten minutes. OIE87 Jy-4, qu. Kado, Virus diseases of orchids (1970); TMV i... Read More

VIRUS-LIKE SYMPTOMS: Causes

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Nutritional or chemical disorders, other insect damage produce them; there is an apparent color-break in vandaa: caused by thrips; distorted cymbidium blooms are attributed to feeding of aphids on ... Read More

Pest Control in Orchids

Author is Anu Dharmani, posted over 7 years ago Orchids are troubled by all kinds of pests and disease infestations. Apart from the creepy crawly ones, even winged visitors create a lot of nuisance, so much so that at times I had to keep guard (... Read More

Crows - Friends or Foes of Orchids

Author is Anu Dharmani, posted over 7 years ago Growing orchids has been a learning experience in itself. There are so many things that I have understood better during this period. Some unexpected confrontations have made me realise that we are ... Read More

Scale Insects - Infestation and Control

Author is Anu Dharmani, posted over 7 years ago Summer is good time for growth in orchids as well as for orchid pests. Pests (like aphids, mealy bugs, scale insects and mites) are more noticeable in orchids during spring and summer. High tempera... Read More

Control Orchid Pests and Diseases Naturally

Author is Anu Dharmani, posted over 7 years ago On Earth day, let us share some information on natural ways of preventing as well as getting rid of pests and insects. The adage ‘Prevention is better than cure’ will save a lot of money and time. ... Read More