Very long photoperiods?

DrHorticulture_(Z3 Central Saskatchewan)May 10, 2010

I've been keeping some of my eggplant seedlings under an approximate 72 hour light/12 hour dark regime because the T4 light fixture is immovable and a whole foot above the plants. (I do have other adjustable fixtures but there's no more space under them).The seedlings are at the 4th-5th true leaf stage and looking stocky and healthy. Have you done this and if so,did you notice any harmful effects?

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davemichigan(zone 6a (SE Michigan))

I don't know about the long photo period. Some plants do need a dark period, but I don't know about eggplants. You can try 18 hours light, 3 hours dark; same proportion but have some rest period.

And have you considered raising the seedlings up? You don't always have to lower the fixture. A shoe box, a few books, a stack of magazines, or many other things can be used to raise the seedlings.

    Bookmark   May 11, 2010 at 1:26PM
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I have not tried doing that but I don't think that the long photo period should be of any much concern. Although when starting on seeds, you are only advised to have an 18 hours on and 3 hours off photo cycle. But if you're doing great on that set-up, there shouldn't be any worry :)

    Bookmark   May 12, 2010 at 3:17AM
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