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The Relationship between Leaf Water Potential and Stem Diameter in Sorghum
Author(s) -
Yatapanage Kamal G.,
So Hwat Bing
Publication year - 2001
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/agronj2001.1341
Subject(s) - sorghum , greenhouse , sorghum bicolor , irrigation , agronomy , calibration , irrigation scheduling , environmental science , sweet sorghum , horticulture , biology , mathematics , statistics
Leaf water potential (ψ l ) represents a good indicator of the water status of plants, and continuous monitoring of it can be useful in research and field applications such as scheduling irrigation. Changes in stem diameter (S d ) were used for monitoring ψ l of pot‐grown sorghum [ Sorghum bicolor (L.) Moench] plants in a glasshouse. This method requires occasional calibration of S d values against ψ l . Predicted values of ψ l based on a single calibration show a good correlation with measured ψ l values over a period of 13 d before and after the calibration. The correlation can further be improved with shorter time intervals.