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Salinity and Compaction Effects on Soil Water Evaporation and Water and Solute Distributions

I.N. Nassara and Robert Hortonb

a Alexandria Univ., Faculty of Agriculture-Damanhoar, Egypt
b Dep. of Agronomy, Iowa State Univ., Ames, IA 50011 USA



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Fig. 1 Fitted soil temperatures (solid and dashed lines) at 0.00- and 0.20-m depths using Eq. [5] and [6], respectively and measured temperature (symbols)

 


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Fig. 2 Measured cumulative evaporation from noncompacted salinized and solute-free soils, and the ratios of cumulative evaporation of salinized to cumulative evaporation from solute-free soil

 


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Fig. 3 Calculated soil water matric ({psi}m) and solution osmotic ({psi}o) potentials distributions after 2 and 28 d of evaporation for noncompacted salinized soil columns

 


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Fig. 4 Measured cumulative water evaporation from salinized compacted and noncompacted soil, and the ratio of cumulative water evaporation from noncompacted to cumulative water evaporation from compacted soil

 


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Fig. 5 Measured and predicted soil water contents, {theta}, for noncompacted salinized soil columns and noncompacted solute-free soil columns

 


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Fig. 6 Measured, predicted, and initial soil water contents, {theta}, for compacted salinized soil columns

 


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Fig. 7 Measured and predicted solute concentration in soil solution for noncompacted salinized soil columns

 


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Fig. 8 Measured, predicted, and initial solute concentrations in soil mass for noncompacted salinized soil columns

 


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Fig. 9 (a) Measured and predicted solute concentration in soil solution for compacted salinized soil columns, and (b) measured, predicted, and initial solute concentrations in soil mass for compacted salinized soil columns

 





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