Newly Posted Articles

CATTLEYAS: Hereditary Influences

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In breeding they have certain dominant characteristics; refer to A60-14 Read More

CATTLEYAS: How to Delay Blooming

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago On other than C. mossiae try 65 deg.F night temperature November 1 to January 25 or 30, then drop to 55 deg. to May 1, then up to 60 to 65 deg. to flower. A78-909 Read More

BUD INITIATION: How to Induce?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago When sheath is on plant, give good light intensity, short days, cool nights below 60 to 62 deg. F.; for Cattleya mossiae provide below 56 deg.F. A70-1099 Read More

THIRAM: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It irritates the skin, eyes, stomach ulcers; injures liver and kidney; depresses the brain; violent reaction in association with liquor. A68-583; only if one ingests 1 oz. or more. OWD Read More

THRIPS: A Common Pest on Vandas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Inside the bud, thrips are protected from insecticides, so it is a good idea to spray early; if late use a fine spray or a misting to avoid injury; use Sevin SOW; if flowers are open use Black Leaf... Read More

TISSUE CULTURE: Mutations

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They do happen, but usually wi th tissue sub-divisions ; explants from the healthy source plant do not mutate. SA84Jun-68 Read More

TISSUE: Sterilisation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago As good an agent as most others recommended, is 10ml of 95 percent ethyl alcohol, 1 ml benzalkonium chloride (zephiran chloride) and water to 250ml; tissues can be left in up to 2 0 or 30 minutes, ... Read More

TOBACCO MOSAIC VIRUS: Orchid, or 0 Type

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In cattleyas and phalenopsis it can exist without symptoms, or with a slight yellowing or streaking of the leaves; no symptoms in the flowers; in combination with other virus it causes blossom brow... Read More

TOBACCO: Smoking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Smoke from a cigarette cannot transmit virus, the question is whether contact of the hand to cigarette tobacco then back to plant transmits live virus. A67-234 Read More

TOBACCO: Smoking in the Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Avoid discarding cigarette butts because they carry Tobacco Mosaic Virus which infects orchids. OD67-50 Read More