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Plant Moisture Stress: A Portable Freezing-Point Meter Compared with the Psychrometer

Cary, J.W. and Fisher, H.D. (1969) Plant Moisture Stress: A Portable Freezing-Point Meter Compared with the Psychrometer. Agronomy Journal. 61:302-305.

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Abstract

A small portable instrument for measuring the freezing-point
depression of plant tissue has been developed for
field use. The instrument is easy to operate and can be
constructed from materials costing less than $100.
Moisture stress measurements made with the freezing-point
meter on a variety of plants were compared with
vapor pressure psychrometer measurments. Variation between
duplicates in the freezing point averaged 1.2 bars,
but differences between stress measurements made with
the psychrometer and freezing-point instrument averaged
2.6 bars.

Item Type: Article
NWISRL Publication Number: 0132
Subjects: Research methodology
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:49
Last Modified: 14 Mar 2017 22:21
Item ID: 76
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/76
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