Newly Posted Articles

FOOT-CANDLES: Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A sodium vapor lamp illuminated all night 100ft. away from cymbidiums in a greenhouse may not affect their flowering because they are temperature-responders; but plants requiring short days will no... Read More

PHALAENOPSIS: Bud Blast Caused by Unvented Propane Heater

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Incompletely combusted gas could affect plants, which are susceptible to gas; check the burners. A85-872 Read More

CAPSULES: Number Possibly Borne by One Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A strong plant capable of supporting capsules can have more than one cross at the same time; the maximum would vary with the strength of the plant. A85-611 Read More

CAPSULES: Sterilization

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Wash them in soap and water or scrub them in the same, rinse and submerge in a 50% solution of bleach for 12 minutes; rinse again; if the capsule was intact the seed should have been sterile inside... Read More

CAPTAN 50%WP: Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has good residual action; spray at 1.5 ttpg. weekly; LD50 of 9,000 mg. is moderately safe. A71-894 Read More

CAPTAN: A Popular Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has LD50 of 3,000 or more; use it as a spray; it can injure flowers. A73-811 Read More

CAPTAN: Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago This has been banned in Australia. AU87Winter-16 Read More

CARBON DIOXIDE: Air Fertilization Data

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Experiments on non-orchid plants in Vermont; also on cattleyas in Tokyo; both with beneficial results; most effectively applied in the afternoon; use dry ice in coffee cans wrapped well in newspape... Read More

CARBON DIOXIDE: Crowded Cymbidium Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If plants are crowded too closely together, in the daytime when they consume much more carbon dioxide than they release, then the carbon dioxide level drops rapidly, gentle air movement then is ess... Read More

WATER (GENERAL): Well-water Is Cleared Not Only of Saline Content

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A reverse-osmosis system clears out also minerals that are good for the plants; to replace them regular soluble fertilizer is satisfactory for an organic potting mix, to replace the calcium lost ad... Read More