A model for irrigation scheduling with saline water
A model for irrigation scheduling with saline water
Investigations into the literature have shown the lack of research into the comparison between the effect of matric and osmotic potential, which represent water and salinity stress respectively, on yield. Studies have therefore been performed in order to elucidate the relationship between these variables. Analysis of wheat experimental data have shown that there was no statistical significance between the effect of matric potential and osmotic potential at the time of irrigation on yield and evapotranspiration. For practical purposes, therefore, the two variables can be considered as identical in their effect on yield and evapotranspiration.
Experimental measurements into the effect of these two potentials on the variation of moisture content with time have produced antagonistic results compared with their effect on yield and evapotranspiration. Theoretical modelling of the effect of matric and osmotic potential on the variation of moisture content with time and the average evapotranspiration response over each irrigation interval, has explained the experimental findings.
Using the above results, a computer model in C+ + was developed for irrigation scheduling with saline water. At present, the model is specific to the wheat crop used in the current experimental study. The model is applicable to all soil types and has scope for further development to include all crops.(DX174990)
University of Southampton
1993
El-Husseini, Sahar Nazih
(1993)
A model for irrigation scheduling with saline water.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
Investigations into the literature have shown the lack of research into the comparison between the effect of matric and osmotic potential, which represent water and salinity stress respectively, on yield. Studies have therefore been performed in order to elucidate the relationship between these variables. Analysis of wheat experimental data have shown that there was no statistical significance between the effect of matric potential and osmotic potential at the time of irrigation on yield and evapotranspiration. For practical purposes, therefore, the two variables can be considered as identical in their effect on yield and evapotranspiration.
Experimental measurements into the effect of these two potentials on the variation of moisture content with time have produced antagonistic results compared with their effect on yield and evapotranspiration. Theoretical modelling of the effect of matric and osmotic potential on the variation of moisture content with time and the average evapotranspiration response over each irrigation interval, has explained the experimental findings.
Using the above results, a computer model in C+ + was developed for irrigation scheduling with saline water. At present, the model is specific to the wheat crop used in the current experimental study. The model is applicable to all soil types and has scope for further development to include all crops.(DX174990)
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Published date: 1993
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Local EPrints ID: 462193
URI: http://eprints.soton.ac.uk/id/eprint/462193
PURE UUID: acb5916c-4102-4181-8af4-46e4fc87d6c6
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Date deposited: 04 Jul 2022 19:03
Last modified: 04 Jul 2022 19:03
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Author:
Sahar Nazih El-Husseini
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