Category: Orchid Doctor

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: Non-use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some good growers rarely use them; they rely on good culture, with pest-free results. A76-698 Read More

PESTICIDES: Phytotoxicity

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It appears in five ways: as burn, on leaf tip, on leaf margin, on leaf surface, or bud; as necrosis, which is similar to burn; chlorosis which is a yellowing or bleaching effect, such as spotting t... Read More

PESTICIDES: Plants Newly Introduced Into Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago All should be sprayed; recommended: Isotox plant spray which is as good as any, or Diazinon 50%WP. A78-403 Read More

PESTICIDES: Poisonous

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago So many are deadly; for a list of substances with LD50 rate and notes, refer to N314 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