SSSAJ
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
 QUICK SEARCH:   [advanced]


     


This Article
Right arrow Abstract Freely available
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via ISI Web of Science (3)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ben-Gal, A.
Right arrow Articles by Dudley, L. M.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Ben-Gal, A.
Right arrow Articles by Dudley, L. M.
Agricola
Right arrow Articles by Ben-Gal, A.
Right arrow Articles by Dudley, L. M.
Related Collections
Right arrow Soil Fertility and Productivity
Right arrow Nutrients
Right arrow Nutrient Management
Right arrow Phosphorus

Phosphorus Availability under Continuous Point Source Irrigation

Alon Ben-Gal*,a and Lynn M. Dudleyb

a Arava Res. and Dev., mobile post Eilot 88820, Israel
b Utah State Univ., Plant Soils and Meteorology Dep., 4820 Old Main Hill, Logan, UT 84322



View larger version (15K):

[in a new window]
 
Fig. 1. Phosphorus sorption isotherm for Kidman sandy loam soil. Symbols are averages of three replicates and the line is the fitted Langmuir equation. C = concentration of P in solution, Q = adsorbed P.

 


View larger version (43K):

[in a new window]
 
Fig. 2. Schematic representation of greenhouse lysimeter set-up with gravitational water application and drainage collection.

 


View larger version (38K):

[in a new window]
 
Fig. 3. Volumetric water content in soil as modeled in Hydrus-2d at four distinct times during a 10-d simulation for the three irrigation regimes.

 


View larger version (56K):

[in a new window]
 
Fig. 4. Soil solution P concentrations as modeled in Hydrus-2d at three times during a 10-d simulation for the three irrigation regimes.

 


View larger version (99K):

[in a new window]
 
Fig. 5. Measured gravimetric water content, bicarbonate extractable P and 2:1 water:soil pH distribution isocharts after 14 d of intermittent and continuous fertigation on a bare soil. Samples were taken in the middle of the 2-d irrigation cycle.

 


View larger version (53K):

[in a new window]
 
Fig. 6. Sweet corn biomass yields after 26 DAP (top) and 40 DAP (bottom) for 2-d intermittent or continuous fertigation. Y-error bars are standard deviations of three replicates.

 


View larger version (53K):

[in a new window]
 
Fig. 7. Root density distribution isocharts for corn plants receiving 2-d intermittent or continuous fertigation.

 


View larger version (62K):

[in a new window]
 
Fig. 8. Plant tissue P in corn plants fertigated with 2-d intermittent or continuous treatments. Harvest 1 was 26 DAP and Harvest 2 was 40 DAP. Y-error bars are standard deviations.

 





HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Vadose Zone Journal Journal of Plant Registrations
Journal of Natural Resources
and Life Sciences Education
Journal of
Environmental Quality
Copyright © 2003 by the Soil Science Society of America.