Category: Orchid Doctor

DIMETHYL SULFOXIDE: Control of Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has been used on aroids with aspirin, no explanation; no case reported of use on orchids. A85-1119 Read More

DIMITE: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Nervousness, tremor, dizziness and convulsions. A68-583 Read More

DIPLOIDS: Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The main source of deeply colored flowers; many produce long spikes with colorful flowers; they have vigorous, hardy plant growth; good diploids rank with the very best. OA79-8 Read More

DIPLOIDS: Floral Characteristics Compared to Neo-tetraploid

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flower measurements given; the tetraploids were slightly larger; their range was greater, or their maximums greater; thickness was greater in tetraploids and their symmetry and substance were super... Read More

DIPLOIDS: Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The vast majority of living things are diploid (twice haploid) but the haploid varies between genera and sometimes between species; diploid or 2n number for a cymbidium is 40, for a dendrobium 38 i... Read More

DISAS: Seed Germination

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Almost fill a clean plastic container with pine sawdust, saturate it with water, firm the surface, dust the seed upon it, cover the top with clear plastic film held with a rubber band and place the... Read More

DISEASED PLANTS: Removal of Affected Parts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Virused plants are usually affected throughout, destroy the plant; bacteria: remove parts when the first visible symptoms appear; fungi: remove spotted leaves particularly if the spots appear on th... Read More

DISEASES: Characteristics and Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a detailed look at every disease recorded, with probable or actual cause, extent of distribution, symptoms, controls, refer to OBIV-Appendix Read More

DISEASES: Parasitic: Bacterial, Fungal and Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For causes, descriptions and methods of countering, refer to N311+ Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More