Newly Posted Articles

LIGHTS, GROWING UNDER: In a Weather-controlled Area

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Instructions on how to construct; list of supplies needed; kinds of controls required and method of installation; for details refer to A70-581+ Read More

LIGHTS, GROWING UNDER: Low-light and High-light Requirement Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many apparently inappropriate genera will do better under lights than expected; list provided; refer to A74-585 Read More

LIGHTS, GROWING UNDER: Requirements for Different Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Low-light intensity plants such as pnalaenopsis, paphiopedilums and some miltonia hybrids do well; hybrid cattleyas, frequently recommended, barely fulfilled expectations by available light from 44... Read More

RESPIRATION RATES: Of Plant Tissue

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It starts at a low temperature of 40 dF, and at 60 dF the rate is 28%, at 70 degrees it is 40%, at 80 it is 50%, at 90 it is 65%, at 100 it is 75%, at 118 it is 100% and after that the plant begins... Read More

RESPIRATORS: Benefits in Using

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They may act as both a mechanical barrier to stop spray inhalation and as a chemical barrier to gas inhalation; use gloves with such chemicals as Zectran and Guthion and direct the spray away from ... Read More

STYROFOAM (CHIPS): Pellets, Etc. as Potting Mix Ingredient

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A small amount in a terrestrial mix prolongs the life of the medium OA82-7; all kinds of waste packing materials can be chopped up for use in various mixes; mix them with bark especially for use in... Read More

CONVERSION: Of Tetraploids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The confusion made clear; of 100 mutations made means of colchicine, 99 will be deleterious; refer to OR81-172 Read More

COOLER TREATMENT: To Stimulate Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In phalaenopsis subject them to a temperature of 55 dF for about two weeks approximately three months prior to when the flowers are wanted in mid-winter; for cymbidiums the treatment should be two ... Read More

COOL-GROWING PLANTS: Chemistry

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Coolness combined with light allows plants to accumulate sugar reserves which are bound to anthocyanins to stabilize colors and protect cells from harmful irradiation; refer to A85-1339 Read More

DAMP-OFF: Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Spray Captan at 1 ttpg., or PCNB (Terraclor) at 1 ttpg. as pot drench; also Chinasol, oxyquinoline benzoate (Wilson Anti-Damp), or sodium-o-phenylphanate (Dowicide Ai, Natriphene, Sopp, or Topane) ... Read More