HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Hettiarachchi, G. M. Articles by Self, P. Search for Related Content PubMed Articles by Hettiarachchi, G. M. Articles by Self, P. Agricola Articles by Hettiarachchi, G. M. Articles by Self, P. Related Collections Flow Phosphorus Nutrient Management

Density Changes around Phosphorus Granules and Fluid Bands in a Calcareous Soil

^a Soil and Land Systems, School of Earth and Environmental Sciences, The Univ. of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia
^b CSIRO Land and Water, PMB 2, Glen Osmond, SA 5064, Australia
^c Adelaide Microscopy, The Univ. of Adelaide, Adelaide, SA 5005, Australia

View larger version (99K): [in a new window]   Fig. 1. Horizontal tomograms taken at two times across the center of a monoammonium phosphate (MAP) granule. (a) Tomogram immediately after granule placement (T1) (b) Tomogram 24 h after granule placement (T2). The color scheme employed ranges from dark blue to dark green for low attenuation values (low density) while dark to light green for medium attenuation values (medium density) and orange to magenta for high attenuation (high density) values.

View larger version (48K): [in a new window]   Fig. 2. (a) Resulting tomogram and (b) line graph plot with resulted attenuation values after subtracting T1 image data from T2 data shown in Fig. 1.

View larger version (121K): [in a new window]   Fig. 3. Backscattered electron micrographs of cross-sections of monoammonium phosphate (MAP) granules (a) original, and (b) incubated for 1 wk in soil.

View larger version (101K): [in a new window]   Fig. 4. Horizontal tomograms taken at two times across the point of fluid P injection. (a) Image immediately after injecting the fluid (T1). (b) Image 24 h after injecting fluid (T2). The color scheme employed ranges from dark blue to dark green for low attenuation values (low density) while dark to light green for medium attenuation values (medium density) and orange to magenta for high attenuation (high density) values.

View larger version (45K): [in a new window]   Fig. 5. (a) Resulted tomogram, and (b) line graph plot with resulted attenuation values after subtracting T1 image data from T2 data in Fig. 4.