Category: Ailments

PHYSAN 20: Properties

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The new (1979) name for Consan is Physan 20; use it to sterilize tools (slowly) control algae, and many diseases of orchids; it can also prolong the life of cut flowers. A76-115; A79-1112;C72-169 Read More

PHYSAN 20: Spraying Monthly

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Too frequent spraying with it may cause toxicity; use benomyl occasionally alternately. A80-254 Read More

PHYSAN 20: Sterilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It takes 10 or more minutes to sterilize tools in it. A79-1022Plastic pots can be disinfected in a solution of 1 ttpg.; rinsing afterwards is not necessary as the plants are not harmed on contact. ... Read More

SPRAYS: Against Fungus and Bacteria

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Physan 20 appears to be an effective bactericide, and it also kills some fungi; the most effective fungicide is Benlate; could be used in a program several times a year. A76-698 Read More

PSEUDOBULBS: Shrivelling During Rest Period

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Backbulbs may shrivel but those with leaf should not; you do not have to water on a humid cloudbathed tropical mountain.' A70-535 Read More

PSEUDOMONAS CATTLEYAE: Brown Spot

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It affects cattleyas, phalaenopsis and others; starts as soft, water-soaked lesion, becomes brown or black; advances rapidly; exudate is very infectious; destroy infected parts; spray with Physan a... Read More

PSEUDOMONAS CATTLEYAE: Common in Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The diseased part should be cut out with a clean razor blade; tap the contents of a Chloromycetin 250 mg. capsule (available from veterinarians) across the cut. OD87-156 Read More

QUILLING: New Leaves Stay Rolled and Upright

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Appears on vigorous dendrobiums, both evergreen type and D.phalaenopsis type; may be due to low humidity; the leaves do not look right but they function well. A79-1022 Read More

ROOT ROT: Various Fungi Cause it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The first visible symptoms may be a yellowing of the pseudobulbs from the base upwards; cut off all rotted roots and infected sections of the rhizome together with affected parts; soak the good par... Read More

ROTS: Fungal and Bacterial

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Those that attack roots, pseudobulbs and leaves are numerous and have difficult names; here they are listed, illustrated for recognition and their controls supplied; to avoid meeting up with any of... Read More