Category: Ailments

BLACK ROT: Treatment with Dexon

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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 over 7 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 over 7 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 over 7 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 over 7 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 over 7 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 over 7 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 over 7 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 over 7 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 over 7 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