Effect of sensor placement on the relationships of crop water stress index, soil moisture tension and soil moisture content
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azu_td_hy_e9791_1988_214_sip1_w.pdf
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azu_td_hy_e9791_1988_214_sip1_w.pdf
Issue Date
1988LCSH Subjects
Hydrology.Soil moisture -- Measurement.
Soil matric potential.
Crops -- Water requirements.
Cotton -- Irrigation.
Committee Chair
Simpson, J. R.Metadata
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The University of Arizona.Rights
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.Abstract
A field experiment was conducted to investigate the feasibility of making one measurement of soil moisture tension/content or crop water stress index (CWSI), and from it determine when and how much to irrigate. Cotton (Gossvpium hirsutum C.V. DPL-90) was planted in a sandy loam soil prepared with an underground drip irrigation system. Measurements of soil moisture tension, soil moisture content, plant temperature, and wet- and dry-bulb temperatures were made. The results indicate that soil moisture tension above 0.30 m and soil moisture content above 0.50 m in the root zone can be used as good indicators for CWSI or vice versa. Further work is required using different irrigation systems and different crops in larger land areas.Type
Thesis-Reproduction (electronic)text
Degree Name
M.S.Degree Level
mastersDegree Program
Soil and Water ScienceGraduate College