Root Growth Simulation Model under Specified Environment
Publication: Journal of Irrigation and Drainage Engineering
Volume 119, Issue 5
Abstract
Sound irrigation management models require the information of root‐depth development with time in order to determine the active zone of soil reservoir. Development indicates rate of change. Sigmoidal as well as exponential root‐depth‐development models as a function of time, soil, crop, and management practices are developed. The models require as input data the maximum rooting depth to be achieved under a particular set of soil, crop, and management practices as well as the days until the root depth attains a maximum value. A comparison was made between experimental observations of a wheat crop and the estimates derived from several previously developed root‐growth models and the models developed in this study. The results clearly indicate that both of the developed models had a high degree of accuracy, which was comparable with or better than other reported empirical root‐growth models.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 119 • Issue 5 • September 1993
Pages: 898 - 904
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: May 7, 1992
Published online: Sep 1, 1993
Published in print: Sep 1993
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