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Stomatal Infiltration Measurements as an Indicator of the Water Requirement and Timing of Irrigation for Cotton*

Published online by Cambridge University Press:  03 October 2008

M. Ofir ,
E. Shmueli  and
S. Moreshet
M. Ofir
Affiliation:
Division of Irrigation, The Volcani Institute of Agricultural Research, Rehovot, Israel
E. Shmueli
Affiliation:
Division of Irrigation, The Volcani Institute of Agricultural Research, Rehovot, Israel
S. Moreshet
Affiliation:
Division of Irrigation, The Volcani Institute of Agricultural Research, Rehovot, Israel
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Summary

The single-liquid infiltration method of measuring stomatal opening was adapted as a practical field method for determining the time of irrigation of cotton. A number of different liquids, leaf positions and times of measurement were tested and the most sensitive method was selected on the basis of the results. No stomatal response was found while soil moisture was depleted to one-third of available water. A steep reduction in stomatal opening was observed with further drying of the soil. Some results are presented from an irrigation experiment where irrigation control by infiltration method was compared with other methods. The practical possibilities in the use of the method in field practice are discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 4 , Issue 4 , October 1968 , pp. 325 - 333
Copyright
Copyright © Cambridge University Press 1968

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References

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