Category: Ailments

APHIDS: Controls on Cymbidiums and Reed Epidendrums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago 1 tpg. Malathion spray; on cymbidiums also Cygon 2.67E at 2 ttpg.; perhaps also on epidendrums. A67-498; A74-708 Read More

CYMBIDIUMS: "clawing" of Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago Bright morning sunlight after cold nights causes this damage. AU78-143 Read More

CAPTAN 50%WP: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago Diarrhea and weight loss. A68-583 Read More

LEAF DIE-BACK: Fungus Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago Spreads slowly from the tip through the leaf unless cut off; Glomerella cincta infects the tip and spreads backwards with a marked line between good and diseased tissue; control with Benlate. A73-8... Read More

LEAF BLIGHT: Also Known as Leaf Die-back, Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago Caused by fungus invasion; spreads gradually through leaf; cut it out before treating; infected areas show watery before drying; control with Benlate, or Anti-Damp, or Tersan. RMH Read More

BUD DROP: In Dend. Phalaenopsis Types

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago They are highly susceptible to damage by ethylene caused by gas heaters, wood-burning stoves, open fireplaces, burning brush outside the greenhouse, and unvented propane burners. A81-810 Read More

BUDS: Brown, Spotted and Chewed

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago Caused by possible infestation of snails; use Sevin or Zectran. A77-314 Read More

BUD DROP: In Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago Air polluted with ethylene is the main reason. A74-502Caused by air pollution, lack of vigor in the growth, improper temperature range, or inadequate light. A81-266Ethylene is the only cause; it ca... Read More

ACTIDIONE: Fungus Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago An antibiotic, with a fungicidal spectrum; systemic in action; recommended for damping-off of cymbidium seedlings. OD65-14 Read More

PESTICIDES: Shelf Life

Author is Robert M. [Bert] Hamilton (Compiler), posted over 4 years ago They should be purchased for short-term use; mark the date of purchase on the container; most keep their effectiveness for two or more years if stpred properly; signs of ineffectiveness in dusts an... Read More

Ailments

(931 articles)

Angraecoids

(41 articles)

Announcements

(3 articles)

Beginners

(21 articles)

Book Review

(4 articles)

Bulbophyllums

(2 articles)

Cattleya Alliance

(92 articles)

Conservation

(16 articles)

Culture

(1364 articles)

Curiosity

(49 articles)

Cymbidiums

(163 articles)

Dendrobiums

(28 articles)

General Discussion

(2 articles)

Oncidium Alliance

(63 articles)

Orchid Doctor

(3579 articles)

OrchidWiz

(27 articles)

Other Genera

(11 articles)

Paph Alliance

(78 articles)

Phalaenopsis

(80 articles)

Pleurothallids

(0 articles)

Propagation

(184 articles)

Scientific

(4 articles)

Site Navigation

(2 articles)

Species

(62 articles)

Travelogue

(2 articles)

Vandaceous

(24 articles)