Everyone in North America will experience a solar eclipse on Monday, 21 August 2017. For some, it will be total. For most, the eclipse will be partial.
If you will be at home (where the tobacco heart is) during the eclipse, and the weather is camera friendly, take at least 4 plant-height photos of your tobacco:
Look at an eclipse map on-line, and determine the appropriate times in advance. [http://www.eclipse2017.org/xavier_redirect.htm] Also, note the percentage of eclipse in your location (e.g. 92%). [If your tobacco will be in totality, the photos will be extra special.] Then POST THEM TO THIS THREAD.
For example, deluxestogie's eclipse data:
What do I expect?
Most of us are familiar with the "praying hands" leaf posture that tobacco may assume at sunset, and maintain during the night. Since I believe that this is entirely a response to light-induced alterations in leaf evaporative water loss, I expect the eclipse to start those plants a praying.
Or, we can wait a few more decades, and catch it next time.
Bob
If you will be at home (where the tobacco heart is) during the eclipse, and the weather is camera friendly, take at least 4 plant-height photos of your tobacco:
- moments before the eclipse begins
- at the maximum
- moments after the eclipse ends
- 1 hour after the eclipse ends
Look at an eclipse map on-line, and determine the appropriate times in advance. [http://www.eclipse2017.org/xavier_redirect.htm] Also, note the percentage of eclipse in your location (e.g. 92%). [If your tobacco will be in totality, the photos will be extra special.] Then POST THEM TO THIS THREAD.
For example, deluxestogie's eclipse data:
- For my tobacco, the % obscuration of the sun will be about 92%.
- start time of partial eclipse: 1:11 pm EDT
- time of maximum: 2:39 pm EDT
- end time of partial eclipse: 4:01 pm EDT
What do I expect?
Most of us are familiar with the "praying hands" leaf posture that tobacco may assume at sunset, and maintain during the night. Since I believe that this is entirely a response to light-induced alterations in leaf evaporative water loss, I expect the eclipse to start those plants a praying.
- How quickly do they begin to pray?
- How complete is the response?
- How long does the response last after the eclipse is over?
- Do confused Manduca sexta hornworm moths come out at mid day?
Or, we can wait a few more decades, and catch it next time.
Bob
Last edited: