Category: Ailments

DUSTS (D): Pesticides

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Dry mixes with inert powders; strengths vary from 0.5% to 10%; when applied will float in air and are easily blown away, but they leave a good residue only if dry; a slight moisture on plants aids ... Read More

PESTICIDES: For Home Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use fungus control materials not essentially dangerous but designed to eliminate insects, such as Malathion, Kelthane, Diazinon and Pentac, all safe to use but be sure to ventilate the premises, mi... Read More

PESTICIDES: Frequency of Spraying

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Depends on the product: Benlate can be applied every two weeks until the fungus is controlled in two or three applications; pesticides generally can be applied every three or four weeks until contr... Read More

PESTICIDES: Injury to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use them with great caution; observe precautions regarding temperatures at which to apply, frequency of application and rates and compatibility; they can cause leaf-scorch, necrotic spotting, abnor... Read More

PESTICIDES: Kocide and Zyban

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago New names, they should first be checked to see if they have been cleared for orchids at your local Agriculture Department level; recommendations are the same rates for both Kocide 101 and Zyban 15%... Read More

PESTICIDES: Lethal Dose

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The "LD50" means the amount of the chemical that will obtain a 50% kill of warm-blooded animals with a single dose; the dose is given in milligrams of chemical per kilogram of body weight. A71-893 Read More

PESTICIDES: Pots Brought Into Growing Area

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Pots brought into a roofed slathouse should be treated with granules such as metaldehyde and mesurol; spread them over and around the pots. A78-403 Read More

PESTICIDES: Prophylactic Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A mix of Natriphene, fertilizer and water every morning on plants is not recommended; don't over-do a good thing. A86-1033 Read More

PESTS AND DISEASES: Controls Used in Earlier Days

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a review of petroleum distillates, cyanide crystals, nicotine painting, Black Leaf 40, DDT, Chlordane, Red Arrow scrubs and dips for such pests as orchid beetie, cattleya fly, boiduval scale, n... Read More

BLACK ROT: Water Mold Pythium Ultimum Is the Cause

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The special enemy of commumity pots of seedlings; damp-off; spray with Physan, Anti-Damp, or Natriphene once a month as preventive; on mature plants cut out rot; soak plant in good fungicide, dry, ... Read More