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Name: Carol Noel Hawaii (near Hilo) It's all about choices.
I was going thru some papers and came upon this information in a letter from David Liddle May 2004. I was about to put up my greenhouse, was wondering about light/humidity/temps....and cataloging plants... Thought you all might be interested in some of what he had to say:
LIGHT INTENSITY cannot be taken in isolation when considering Green House design. Remember the most efficient position is one that can restrict stress and yet keep the plant growing. Place a thermometer amongst your cuttings, test the leaf and it should feel cool. Record the temperature it should be stable most of the day. Take the air temp. from above the cuttings and it should be higher as the leaves should be transpiring and cooling the surrounding air. If the light is too intense it will overdrive the cuttings and they will be stressed and not be able to transpire at a sufficiently fast rate to keep cool. So to oversome this introduce misting to supplement the natural ability of the cuttings to keep cool by transpiration. If you place your cuttings over a layer of sand or lerlite and keep this wet then it will act as a buffer to even out spikes. The secret with cuttings is reducing stress and moisure stress is the one that kills them the most. Remember as the house is filled it will change characteristics so do not make decisions now that have no relevance in a couple of months.
Name: Carol Noel Hawaii (near Hilo) It's all about choices.
Basically it is a simple matter of keeping the cuttings transpiring (yes, plants breathe) and that the surface of the leaf doesn't not get HOT = stress = death.
Humm, well mine weren't too hot today! Just went to check all the chooks were in for the night and discovered that my *very clever* dogs had opened both of my greenhouse doors!!
Are they still looking for that tasty blood fish and bone fertiliser I wonder??
see what we learn here !!!
