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Monitoring Cotton Plant Stem Radius as an Indication of Water Stress 1
Author(s) -
Namken L. N.,
Bartholic J. F.,
Runkles J. R.
Publication year - 1969
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1969.00021962006100060018x
Subject(s) - water stress , radius , linear variable differential transformer , stress (linguistics) , environmental science , agronomy , materials science , biology , engineering , transformer , linguistics , philosophy , computer security , electrical engineering , distribution transformer , voltage , computer science
Cotton plant water stress was monitored continuously during a drying cycle by measuring microchanges in plant stem radius with a linear variable displacement transducer (LVDT). Plant stem contraction was directly related to the degree of leaf water stress, and plant stem radius was very responsive to changes in the energy load at the evaporating surface. The LVDT provided a stable, trouble‐free method for monitoring relative plant water stress under field conditions without destroying plant tissue.