Category: Orchid Doctor

ETHYLENE: Cause of Bud Drop

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is reported that spraying flowers with a weak solution of silver nitrate can prevent damage; no source given. 0IE85Jy-13 Read More

ETHYLENE: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A product called "Ethysorb", a granular mix of Aluminum oxide and Potassium permanganate, placed in a quilt or a perforated tube absorbs ethylene; a tube costs 25 pounds and lasts three months, wit... Read More

ETHYLENE: Damage to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchids are the most sensitive of all plants to ethylene; 1 part in five hundred million will injure opening flowers on cattleyas; references given. 72-534; mature flowers are more resistant than b... Read More

ETHYLENE: Effect on Buds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It does not affect buds or sepals before the flowers open (it says right here); other factors cause bud drop, such as paint inside a water tank (what?). A81-150; bud drop.A82-487 Read More

ETHYLENE: Effect on Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants subjected to ethylene showed leaf yellowing after two days and were completele defoliated within one week; plants were placed close to a stack of ripening apples. AU81-101 Read More

ETHYLENE: Filter Systems

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Activated charcoal in filter systems have proven successful in protecting greenhouses in San Francisco area from "oxident" and ozone damage but even brominated charcoal has failed. OD65-402; bromin... Read More

ETHYLENE: Fireplaces

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A source of ethylene which affect plants grown in the home. A77-702 Read More

ETHYLENE: Flower Damage

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In a 1,000 cu.ft. closed greenhouse a 100-gram apple producing 10 grs. ethylene (C2H4) per ton per day would produce in one day .03 parts per million, at which damage to flowers would occur; a dama... Read More

ETHYLENE: From Natural Gas Leak

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It took four or five days for the effect to show as bud drop and flower loss on phalaenopsis, OD69-272 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

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