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Effect of Irrigation Regimes on the Water Status, Vegetative Growth and Rubber Production of Guayule Plants

Published online by Cambridge University Press:  03 October 2008

Aliza Benzioni ,
David Mills  and
Meir Forti
Aliza Benzioni
Affiliation:
The Institute for Agriculture and Applied Biology, The Institutes for Applied Research, Ben-Gurion University of the Negev, Beer-Sheva, 84110, Israel
David Mills
Affiliation:
The Institute for Agriculture and Applied Biology, The Institutes for Applied Research, Ben-Gurion University of the Negev, Beer-Sheva, 84110, Israel
Meir Forti
Affiliation:
The Institute for Agriculture and Applied Biology, The Institutes for Applied Research, Ben-Gurion University of the Negev, Beer-Sheva, 84110, Israel
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Summary

Three irrigation regimes (250, 450, 650 mm year−1) were applied to guayule (Parthenium argentatum), a rubber-producing plant, in such a way as to provide periods of good soil water status alternating with periods of water stress. The relative water content and transpiration rate of the plants decreased only when the available soil water was depleted to about 40%. Very low values (< 30%) were measured for the relative water content. Water-stressed plants recovered as soon as irrigation was resumed. Growth and biomass accumulation, as well as the yields of rubber and resins, were directly related to the irrigation rates. The water regimes applied and the use of the drip irrigation method resulted in a relatively high water use efficiency.

Type
Research Article
Information
Experimental Agriculture , Volume 25 , Issue 2 , April 1989 , pp. 189 - 197
Copyright
Copyright © Cambridge University Press 1989

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References

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