Newly Posted Articles

CYMBIDIUM TIP BURN: Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Botrytis. sp. cause leaf tip to become spotted; the spots join up to cause tip to die; powdery masses of spores show; cut off and treat with Tersan or other fungicide. N317 Read More

CYMBIDIUMS, MINIATURE: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Any hybrid with at least one dwarf species as a parent or in its immediate background. OA79-52 Read More

SPIKES, FLOWER: Breaking Off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They double up like hair-pins and break off; a cause may be excessively dry atmosphere. A77-449 Read More

SPIKES, FLOWER: Turn Into Leaf Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In phalaenopsis, spikes can turn into keikis; in one case an oncidium formed a flower spike which turned into a growth spike with leaves, then turned back into a flower spike; genetics and geograph... Read More

SPLITTERS: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Taxonomists who take the opposite view of "Lumpers" and call "minor" differences "major" ones, enough to classify them as separate species. FR99 Read More

SPOROTRICHOSIS: A Fungus Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Contracted by handling lots of natural materials including sphagnum moss; it is introduced through punctures in the skin; forms nodules on the extremities; causes arthritis, lung inflammation, abdo... Read More

SPORTS: Mutations; Variant Offspring

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Visibly different plants in a group of meristems are somatic variants or bud sports, a small percentage of the whole and mainly disappointing as far as improvements are concerned. OIE88Jan-5 Read More

SPOT INFECTION: Bacterial Ailment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is found on phalaenopsis especially, and on cattleyas; hyaline (glassy, transparent) spots or depressions are not systemic and can be stopped by keeping the foliage dry at night; avoid condensat... Read More

SPOTS, DOUGHNUT-LOOKING: On Phalaenopsis Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Likely the fungus disease anthracnose; remove the damaged leaves; spray with Fore (Dithane M45) at 1.5 ttpg.; dry leaves before night by use of a fan. A70-345 Read More

SPRAY EQUIPMENT: Rinsing Materials

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use plain water first on the equipment after it has been used; then use household ammonia at one part to five or ten parts water; then lastly plain water. A78-1124 Read More