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Old 10-09-2011, 09:35 PM   #13 (permalink)
Nicolas Naranja
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Default Re: How does low humidity affect growth?

The physiological answer is that during time of low humidity the stomata will close. Water moves through the plant along a gradient of water potential. If the difference between the water potential in the leaf and in the air is too great the plant will shut it's stomata. No open stomata, no carbon assimilation, no growth.
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