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Evapotranspiration Measured by a Neutron Probe on Sudan Gezira Vertisols

Published online by Cambridge University Press:  03 October 2008

Osman A. A. Fadl
Osman A. A. Fadl
Affiliation:
Soil Science Section, Gezira Research Station, Wad Medani, Sudan
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Summary

Daily measurements of moisture by neutron probe showed an erratic pattern of ET in the Sudan Gezira, attributed to the redistribution of water and development of cracks in a drying profile. However, dividing an irrigation cycle into periods of 3–5 days revealed a unique trend of ET that was consistently low in the early period, increased to a maximum in the middle, and fell off at the end. Roots suffer from anaerobic conditions for about 5 days after flooding but subsequent drying and cracking improves soil aeration that leads to final depletion of profile moisture and depression of ET.

Type
Research Article
Information
Experimental Agriculture , Volume 14 , Issue 4 , October 1978 , pp. 341 - 347
Copyright
Copyright © Cambridge University Press 1978

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References

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