Category: Orchid Doctor

THRIPS: Insecticide Control for Indoors

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a basement collection under lights, use Malathion but if it is not effective, use Diazinon at the rate of 1 tpg.; it may be repeated in 14 days. A81-150 Read More

THRIPS: On Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are among the worst pests, causing spotting on flowers; the damage occurs in the form of halo dots on sepals or petals and appear very similar to Botrytis spotting; use Cygon every six weeks a... Read More

THRIPS: On Vandas and Ascocendas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flowers show scarred, burned, or misshapened from the feeding, especially in South Florida; control them by applying wettable powders such as Sevin, or Orthene. F81-153 Read More

THUNIAS: Problem Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In November remove the pseudobulbs from their pots and store them in a light, airy place at a temperature of 45 to 50 dF (8 dC to 1O dC) until springtime when they are repotted in large pots in a r... Read More

TIRE TREAD: As a Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Ripped-off pieces of highway tire rubber tread cut into cubes about one inch square are good heavy, inert, non-retaining media for Doritis and vandaceous types; for dendrobiums just half-fill the p... Read More

TISSUE CULTURE: Advantages

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It has increased the range of choice at the high quality level; but phalaenopsis mericlones take two to three times as long to mature and some never do; paphiopedilum explants produce short-lived c... Read More

TISSUE CULTURE: Everyone Is Doing it in Hawaii

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Most growers now have their own laboratory; most are no longer using true meristem culture but are doing shoot tip cultures using lateral buds which are easier to excise, they grow faster and proli... Read More

TISSUE CULTURE: Methods

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago How to obtain pathogen-free explants; genetic research; hybrids achieved by means of fusion of plant cells; refer to F78-10+; clonal propagation; a manual; refer to OB1-203 to 293, 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