Hostname: page-component-7479d7b7d-jwnkl Total loading time: 0 Render date: 2024-07-11T17:31:30.016Z Has data issue: false hasContentIssue false
  • English
  • Français

Evaporation from Lucerne Under Advective Conditions in the Sudan I. Factors Affecting Water Losses and Their Measurement

Published online by Cambridge University Press:  03 April 2017

J. P. Hudson
J. P. Hudson*
Affiliation:
Department of Horticulture, University of Khartoum, Sudan*
Get access Rights & Permissions [Opens in a new window]

Summary

It is suggested that irrigation should ideally be based on two sets of measurements, i.e. of conditions in the leaf and of cumulative evaporation rates respectively, on the assumption that the question 'When to irrigate ? ’ can best be answered from a knowledge of leaf water potential and the daytime behaviour of stomata, and the question ‘How much water to apply?’ from a knowledge of the current soil water deficit. It is emphasized that there is no unique or fixed relation between leaf water potential and soil water deficit, and since neither can be deduced from the other it is advisable to measure both in critical experimental work on irrigation. Various methods of measuring leaf water potential and evaporation rates are discussed, and their value in experimental work assessed.

Type
Research Article
Information
Experimental Agriculture , Volume 1 , Issue 1 , January 1965 , pp. 23 - 32
Copyright
Copyright © Cambridge University Press 1965

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Alvim, P. De T. (in press). Proc. UNESCO Symposium on Methodology of Eco-Physiology, Montpellier, 1962.Google Scholar
Dale, G. E. (1958). Emp. Cotton Gr. Rev. 35, 254.Google Scholar
Glover, J. & Forsgate, J.A. (1962). Nature, Land. 195, 1330.Google Scholar
Hand, D. W. (1964). Emp. J . exp. Agric. 3a, 263.Google Scholar
Alvim, P. De T. (in press). Proc. UNESCO Symposium on Methodology of Eco-Physiology, MontpcllUr, 1962.Google Scholar
Hudson, J . P. (1964). Emp. Cotton Gr. Rev. 40, 253.Google Scholar
Hudson, J . P. (in press, a). Proc. UNESCO Symposium on Methodology of Eco-Physiology, Montpellier, 1962.Google Scholar
Hudson, J . P. (in press, b). Expl Agric. .Google Scholar
Peerlkamp, P. K. (1955). Int. Commission lrrig. Drainage A. Bull. .Google Scholar
Penman, H. L. (1963). Vegetation and Hydrology, Comm. Bur. Soils Tech. Comm. 53.Google Scholar
Sampson, J . (1961). Nature, Land. 191, 932.Google Scholar
Slatyer, R. O. & Taylor, S. A. (1960). Nature, Land. 187, 922.Google Scholar
Spanner, D. C. (1951). J . exp. Bot. 3, 145.Google Scholar
Wabter, P. D. (1964). Univ. Nottingham Sch. Agric. Rep. 1963, 65 (and Dept. Hort. Misc. Publ. 15, 1964).Google Scholar
Winter, E . J . (1963). J . hort. Sci, 38, 160.Google Scholar