Category: Ailments

RUSTS: Sphenospora Saphena

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some oncidiums in Florida have been infected; show tiny raised orange areas under leaves; aging, the pustules become dark brown; remove and destroy all infected plants; spray surrounding ones with ... Read More

SAFER'S SOAP: An Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is a combination of fatty acids and alkali, a selective contact insecticide safe to use around children pets and plants in the home; is non-corrosive to equipment, it controls aphids, mealybugs,... Read More

CYGON 2E: Compared with Cygon 4e

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cygon 2E is 22% dimethoate and Cygon 4E is likely 43%; Cygon 4E is also a different formulation; avoid putting it on buds; it is often phytotoxic. A71-345; OD65-169(213) Read More

CYGON 2E: Injury to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It has been reported for some plants; in the case of cymbidiums a breakdown of color was reported, but suspected as being virus; that should be tested before the spray in condemned. A87-33 Read More

SCALE, BOISDUVAL: On Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Heavy infestation on neglected collection; spray one fluid ounce of Cygon 2E in three gals, water; a hand lens will show dead scale as yellowish-brown to brown and live scale as yellow. A70-148 Read More

SCALE, BROWN: Treatment Required

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Hand picking is not so effective; spray with Cygon 2E at 2 tpg., or with Malathion at 1.5 tpg. plus a few drops of a wetter-sticker. A73-991 Read More

SCALE: Destroyed by Alcohol

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use an alcohol from a spray bottle but remember that contact is necessary for killing them and that missed ones will multiply; a toothbrush and soapy water is an effective treatment for only a few ... Read More

FUNGUS DISEASES: Of Seedlings and Adult Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a review refer to W1-420+ Read More

SOFT ROT: Erwinia carotovoras

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many genera are affected; bacteria enter the plant through wounds causing a wet rot with an offensive odor; it spreads rapidly in the leaves and roots, less so in the rhizomes and pseudobulbs; dest... Read More

SNAILS: Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use Sevin or Zectran. A77-314 Read More