Dear Claude,

When I clicked on this link, it went to a hyperstore for light
bulbs....tell us the link once more.

Cynthia W. Mueller
College Station, TX

http://www.bulbs.com/ has several citations that relate to this
question.

Use the search engine and enter "ethylene gas and its effects" to
locate
the articles.

The amounts of ethylene gas that will trigger a response can be as low

as 10 parts per million to trigger the ripening process of kiwifruit
stored at 33 degrees F.

It is important to know the source of the ethylene - Apples are a high

producer of ethylene - the temperature, and the minimum length of
exposure the target produce or bulb has to the gas.

This site is a profession organization of Dutch growers and should be
reliable.

Claude Sweet