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


     

Published online 25 May 2007
Published in J Environ Qual 36:975-982 (2007)
DOI: 10.2134/jeq2006.0424
© 2007 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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 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 Google Scholar
Google Scholar
Right arrow Articles by Guérin, J.
Right arrow Articles by Abdelhafid, R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Guérin, J.
Right arrow Articles by Abdelhafid, R.
Agricola
Right arrow Articles by Guérin, J.
Right arrow Articles by Abdelhafid, R.
Related Collections
Right arrow Best Management Practices
Right arrow Phosphorus
Right arrow Nutrient Management
Right arrow Water Pollution

Agri-environmental Thresholds using Mehlich III Soil Phosphorus Saturation Index for Vegetables in Histosols

Julie Guérin, Léon-Étienne Parent* and Rahima Abdelhafid

Dep. of Soils and Agri-Food Engineering, Université Laval, Québec, QC, Canada G1K 7P4


Figure 1
View larger version (10K):
[in this window]
[in a new window]

  		Fig. 1. The r2 values for relationships between the [P/(Al+{gamma}Fe)]M-III ratio as an index of P saturation (IPSM-III) and the degree of P saturation (DPSOX) ({alpha}m = 0.4) or water-extractable P (PW) by varying the {gamma} coefficient in IPSM-III.

 

Figure 2
View larger version (12K):
[in this window]
[in a new window]

  		Fig. 2. Relationship between the [P/(Al+{gamma}Fe)]M-III ratio as an index of P saturation (IPSM-III) ({gamma} = 5) and the degree of P saturation (DPSOX) ({alpha}m = 0.4).

 

Figure 3
View larger version (13K):
[in this window]
[in a new window]

  		Fig. 3. Relationship between the [P/(Al+{gamma}Fe)]Mf-III ratio as an index of P saturation (IPSM-III) ({gamma} = 5) and water-extractable P (PW).
 

Figure 4
View larger version (14K):
[in this window]
[in a new window]

  		Fig. 4. Relationship between relative yield and the [P/(Al+{gamma}Fe)]M-III ratio as an index of P saturation (IPSM-III) ({gamma} = 5) across Group A crops.

 

Figure 5
View larger version (13K):
[in this window]
[in a new window]

  		Fig. 5. Relationship between relative yield and the [P/(Al+{gamma}Fe)]M-III ratio as an index of P saturation (IPSM-III) ({gamma} = 5) across Group B crops.

 

Figure 6
View larger version (12K):
[in this window]
[in a new window]

  		Fig. 6. Significance ({alpha} level for rejecting H0) of the partition between two soil groups below or above the [P/(Al+{gamma}Fe)]M-III ratio as an index of P saturation (IPSM-III) separator on the x axis.

 




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2007 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.