Orchid doctor

AIR POLLUTION: Sulfur Dioxide, Ozone, Ethylene

Orchid Doctor

by Robert M. Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 2 years ago.

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Cattleya buds and phalaenopsis buds just opening are extremely sensitive to ethylene cloudy, still weather in autumn and winter allows concentration; injury varies with degree and duration; high concentration causes older cattleya leaves to suffer; no control available; activated carbon filters are expensive. A65-697; A67-567; AH54
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