We are doing some experiments with thermistors. Our goal is field measurement of both exposed and 'within' canopy vineyard temperatures during a radiant frost event. We are building our own test equipment. Saturday, our Arduino setup measured and logged the external temperature of a mug containing hot tea, and got a good match with a handy candy thermometer.
There are a million problems to solve, not the least of which is that the Arduino components fail at the freezing point, which is where we plan to take our measurements.
After weeks of combing through academic publications, the best description of a similar experiment was found in "Current and emerging screening methods to identify posthead-emergence frost adaptation in wheat and barley" by Frederiks, et.al.
"In the PGM trials, plant minimum temperatures at the top
of the canopy are measured using fine thermistor probes as
described in Frederiks et al. (2011a). Probes are attached, with
adhesive tape, to the leaf blade of the uppermost expanded leaf,
exposed to the night sky."
Key to discovering this article: coming across the term 'crop temperature.' I had been using the term 'plant surface temperature.'
No comments:
Post a Comment