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


     


This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
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 Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (15)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Börling, K.
Right arrow Articles by Barberis, E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Börling, K.
Right arrow Articles by Barberis, E.
Agricola
Right arrow Articles by Börling, K.
Right arrow Articles by Barberis, E.
Related Collections
Right arrow Batch Studies
Right arrow Sorption/Exchange
Right arrow Ecological Risk Assessment
Right arrow Phosphorus
Right arrow Soil Analysis

Soil Variables for Predicting Potential Phosphorus Release in Swedish Noncalcareous Soils

Katarina Börling*,a, Erasmus Otabbonga and Elisabetta Barberisb

a Department of Soil Sciences, Swedish University of Agricultural Sciences, P.O. Box 7014, SE-750 07 Uppsala, Sweden
b Dipartimento di Valorizzazione e Protezione delle Risorse Agroforestali, University of Turin, Via Leonardo da Vinci 44, I-10095 Grugliasco (TO), Italy



View larger version (28K):

[in a new window]
 
Fig. 1. Changes in ammonium lactate–extractable phosphorus (P-AL) as influenced by repeated cropping and fertilization. Level A, no P added; Level B, replacement of P; Level C, replacement + 15 or 20 kg P; Level D, replacement + 30 kg P.

 


View larger version (31K):

[in a new window]
 
Fig. 2. The CaCl2–extractable total phosphorus (CaCl2–TP) in relation to soil test phosphorus (STP) as determined by (a) NaHCO3–extractable phosphorus (Olsen P) and (b) ammonium lactate–extractable phosphorus (P-AL).

 


View larger version (17K):

[in a new window]
 
Fig. 3. Effect of maximum phosphorus sorption capacity (PSCmax) on relationship between potential P release and soil test phosphorus (STP). The term * indicates significance at the 0.05 probability level, while ** indicates significance at the 0.01 probability level.

 


View larger version (14K):

[in a new window]
 
Fig. 4. Changes in relative content of CaCl2–extractable unreactive phosphorus (CaCl2–UP) promoted by CaCl2–extractable total phosphorus (CaCl2–TP) levels.

 


View larger version (19K):

[in a new window]
 
Fig. 5. Relationship between CaCl2–extractable total phosphorus (CaCl2–TP) or CaCl2–extractable reactive phosphorus (CaCl2–RP) and the ratio of NaHCO3–extractable phosphorus (Olsen P) to phosphorus sorption index (PSI) or ammonium lactate–extractable phosphorus (P-AL) to PSI. The term *** indicates significance at the 0.001 probability level.

 





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
Soil Science Society of America Journal
Copyright © 2004 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.