Category: Ailments

BLACK ROT: Treatment with Dexon

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Remove diseased parts; soak or drench pot in one teaspoon per two gallons water three or four times at 10 to 14 day intervals; it is surface effective only. A74-969 Read More

BLACK ROT: Two Kinds Are Prevalent

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago One is a cool-weather rot, the other is a warm-weather type and both cause blackening of leaf tissue; both are contagious and can be spread by splashing water; keep plants dry, spray with Benlate; ... Read More

NICOTINE SMOKE: Used as Control of Aphids and Thrips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Great precautions must be taken because of its toxicity; refer to AH13 Read More

NITROGEN SHOCK: Reducing Nitrogen Sharply in August

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago In the Midwest, where cool August nights seldom occur, buds can be initiated for winter flowering by the reduction of nitrogen; applied to cymbidiums. A67-12 Read More

SEPAL WILT: Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago The ends of cattleya sepals go brown and dry because of ethylene pollution in the air from automobile exhausts, etc.; perhaps from a defective heater; illus. A69-242; illus. A75-908; A77-437 Read More

BUDS: On Cattleyas, Turn Yellow and Drop

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago The air is possibly polluted with ethylene and automobile fumes, or burning wood, an unvented heater, insufficient light, injury caused by snails, slugs, insecticide or pesticides. A76-507; A76-698 Read More

BUDS: Blasting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago In addition to ethylene, it can be caused by drying out from either high or low temperature, or low humidity. A86-1140May be caused by air pollution, or too high or too low temperatures; in cattley... Read More

PENTAC: Miticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago It has few if any bad effects on plants and is relatively benign to people; use it once a week; it has a shelf-life of only about one year. OIE86Jan-17Mode of action: it attacks the neuro-muscular ... Read More

FUNGICIDES: Combined with Pesticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Both Manzate and Benlate can be combined with Malathion. A73-991 Read More

SEPAL WILT: Cattleyas and Their Hybrids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Cattleyas are the most sensitive of all in the whole plant kingdom to ethylene; one part in five hundred million parts of air can ruin sepals and eventually the whole flower. A73-905 Read More