Category: Orchid Doctor

ETHYLENE: How to Detect in a Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Opening buds of white cattleyas will bleach to green or cream; lavender flowers to pink; if concentration is low only the tips of sepals will be affected; there is no simple chemical test for it. A... Read More

ETHYLENE: In Citrus Fruits

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They yield very little. A78-495 Read More

ETHYLENE: In Nature

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A ripening gaseous hormone in plants; an air pollutant to orchids; occurs in orchids; within hours of pollination orchid flowers produce it and flowers change; shipping containers permit it to accu... Read More

ETHYLENE: In Normal Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can come from a leak in the propane gas line, or from traffic on a near-by road on a foggy night. A79-272 ; cars with catylic converters produce less. A80-356 Read More

ETHYLENE: Plants Not Susceptible to It

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Paphiopedilums are very resistant; they can be grown well under lights; they can replace cattleyas and phalaenopsis. A68-331 Read More

ETHYLENE: Preventive of Bud Drop

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Spraying dendrobiums and phalaenopsis in bud with silver nitrate 100 parts to 1 million of water will prevent bud drop, especially in the fall. ODA76(4)-32 Read More

ETHYLENE: Scrubbers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Greenhouse air can be circulated through commercial machines to remove most of it if the house is closed tightly enough. AH86-107 Read More

ETHYLENE: Smoking Tobacco as a Source

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There is considerable ethylene in a room where several people are smoking. A69-614 Read More

ETHYLENE: Testing for

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use small tomato plants which show a strong reaction to ethylene; the leaves bend downward from the stem, stiff but not wilted. A77-449 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