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Assessing Soil Moisture Regimes with Traditional and New Methods

Edoardo A. C. Costantini*,a, Fabio Castellib, Salvatore Raimondic and Paolo Lorenzonid

a Istituto Sperimentale per lo Studio e la Difesa del Suolo, 50121 Firenze, Italy
b Istituto Sperimentale per il Tabacco, 37051 Bovolone VR, Italy
c Istituto di Agronomia, Università di Palermo, 90128 Palermo, Italy
d Istituto Sperimentale per lo Studio e la Difesa del Suolo, 02100 Rieti, Italy



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Fig. 1. Location of the experimental sites in Italy.

 


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Fig. 2. Soil moisture regimes following the ICOMMOTR methodology. Mean soil water state is defined as the geometric mean of the negative matric potential at a depth of 0.75 m from the surface. MDWS, mean dry season soil water state; MWWS, mean wet season soil water state; MAWS, mean annual soil water state.

 


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Fig. 3. Volumetric soil water content at the 0.15-m (dot) and the 0.75-m (circle) depths at Bovolone during the period of 1994 through 1998. Arrows indicate summer solstices. Dashed lines indicate average field capacity (F.C.) and wilting point (W.P.) for the two depths.

 


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Fig. 4. Volumetric soil water content at the 0.15-m (dot) and the 0.75-m (circle) depths at Cesa during the period 1994–1998. Arrows indicate summer solstices. Dashed lines indicate average field capacity (F.C.) and wilting point (W.P.) for the two depths.

 


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Fig. 5. Volumetric soil water content at the 0.15-m (dot) and 0.45-m (circle) depths at Rieti during the period of 1994 through 1997. Arrows indicate summer solstices. Dashed lines indicate average field capacity (F.C.) and wilting point (W.P.) for the two depths.

 


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Fig. 6. Volumetric soil water content at the 0.15-m (dot) and 0.75-m (circle) depths at Sparacia during the period of 1994 through 1998. Arrows indicate summer solstices. Dashed lines indicate average field capacity (F.C.) and wilting point (W.P.) for the two depths.

 


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Fig. 7. Soil water potential at the 0.75-m depth (0.45 m depth for Rieti): geometric seasonal mean.

 


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Fig. 8. Soil water potential at the 0.15-m depth: geometric seasonal mean.

 


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Fig. 9. Soil water potential at the 0.15- and 0.75-m depths: geometric mean of the observed years.

 





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The Plant Genome
Copyright © 2002 by the Soil Science Society of America.