Category: Ailments

Harmful Effects of Common Orchid Pesticides

Author is Anu Dharmani, posted over 1 year ago We have been using pesticides and various other chemicals frequently to get rid of pests and diseases in plants, without realising the harmful effects of these chemicals. Now, studies and reports a... Read More

Orchids And The persistent Whitefly

Author is Anu Dharmani, posted over 2 years ago Most orchid species are susceptible to whiteflies. These insects are attracted to the softer parts of the plants, where they can easily suck the sap. These persistent pests have, unfortunately deve... Read More

PHALAENOPSIS: Buds Fall Off in the Home

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago The chances are good that the atmosphere in the home in winter is too dry because of low relative humidity, so place the plants on pans of gravel ana water. A83-1156 Read More

PETAL BLIGHT: Botrytis cinerea

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago It is confined to older flowers during cold damp weather; it is most common on various genera; small, circular spots often bordered by a delicate rim of pink; the imperfect stage Botrytis cinerea i... Read More

PESTICIDES: Phytotoxicity

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago It appears in five ways: as burn, on leaf tip, on leaf margin, on leaf surface, or bud; as necrosis, which is similar to burn; chlorosis which is a yellowing or bleaching effect, such as spotting t... Read More

PESTICIDES: Recommended Names

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago For a list of 22 substances usually used in greenhouses, with their LD50 rating, and useful notes, refer to N314 Read More

PESTICIDES: Review

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago Safety ratings, label warning statements; toxicity table of the most popular formulations; their availibility; a compatibility table of 22 kinds; their application; storage, shelf life, etc.; refer... Read More

PESTICIDES: Registration for Use on Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago Many standards are not registered: Truban (ethazol), Subdue 2E (metalaxyl) and Physan (n-alkyl ammonium chlorides) are three frequently recommended and widely used; a petition is recommended to get... Read More

ZECTRAN: A Carbamate Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago It is no longer made. OWD Read More

BOTRYTIS: Time Lag to Its Visibility

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 4 years ago It takes normally 10 to 12 hours to show on cattleya flowers. A80-110 Read More

Ailments

(927 articles)

Angraecoids

(40 articles)

Announcements

(1 articles)

Beginners

(9 articles)

Book Review

(3 articles)

Bulbophyllums

(1 articles)

Cattleya Alliance

(89 articles)

Conservation

(16 articles)

Culture

(1329 articles)

Curiosity

(18 articles)

Cymbidiums

(164 articles)

Dendrobiums

(25 articles)

General Discussion

(0 articles)

Oncidium Alliance

(62 articles)

Orchid Doctor

(3579 articles)

OrchidWiz

(26 articles)

Other Genera

(11 articles)

Paph Alliance

(77 articles)

Phalaenopsis

(80 articles)

Pleurothallids

(0 articles)

Propagation

(184 articles)

Scientific

(2 articles)

Site Navigation

(2 articles)

Species

(57 articles)

Travelogue

(1 articles)

Vandaceous

(21 articles)