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(Article of periodic en Français - 1983)

Document title

Transfert hydrique dans le végétal. II. Détermination au champ des variations de contenu en eau du couvert végétal

Authors(s) and Affiliation(s)

KATERJI N. ; HALLAIRE M. ; MENOUX-BOYER Y. ; PERRIER A. ;

Abstract

A previously presented model for water circulation within plants suggested a method for determining, from transpiration and water potential measurements, the amounts of water lost and recovered during the course of the day by the plant canopy. Applied to a lucerne canopy over a period of about twenty days, this method led to a set of plausible results which thus seem to confirm the model's validity. As opposed to the case of other methods which apply only to the aerial parts, the data obtained here include the root system contribution| for the lucerne canopy studied, this contribution corresponds to two third of the water lost by the plant. And in conclusion, the possibilities of increasing accuracy while simultaneously simplifying measurements are examined, as well as possible limitations in the method's application notably in the case of great soil dryness.

Source

Article of periodic

published at : Acta oecologica. Série Oecologia plantarum Montreuil

Editor :

Millesime : 1983, vol. 4, no2 [pp. 171-181]

Bibliographic references : 21 réf.

Language

Français

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