Aspen Bibliography

Controlling transpiration in Aspen with phenylmercuric acetate

Document Type

Article

Journal/Book Title/Conference

Water Resources Research

Volume

5

Issue

2

First Page

407

Last Page

412

Publication Date

1969

Abstract

A 0.001 M spray of phenylmercuric acetate was applied by helicopter to part of an aspen stand in northern Utah in June, 1967. The natural fluttering action of the aspen leaves facilitated delivery of the spray to the stomate-bearing underside of the leaves. Nine days after treatment, stomate width on treated trees averaged 2.4 μ as compared with 4.0 μ measured on untreated trees. Heat pulse measurements indicated reduction in daylight sap velocity from 11 cm/hr to 6 cm/hr. Seasonal soil moisture depletion was not significantly affected, although the pattern of water usage was delayed for about 6 weeks on the treated area.

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