soil quality and soil productivity in africa

17
This article was downloaded by: [University of New Hampshire] On: 19 November 2014, At: 20:45 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Journal of Sustainable Agriculture Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/wjsa20 Soil Quality and Soil Productivity in Africa Hari Eswaran a , Russell Almaraz a , Paul Reich a & Pandi Zdruli a a US Department of Agriculture , Natural Resources Conservation Service , P.O. Box 2890, Washington, DC, 20013 Published online: 12 Oct 2008. To cite this article: Hari Eswaran , Russell Almaraz , Paul Reich & Pandi Zdruli (1997) Soil Quality and Soil Productivity in Africa, Journal of Sustainable Agriculture, 10:4, 75-90, DOI: 10.1300/J064v10n04_07 To link to this article: http://dx.doi.org/10.1300/J064v10n04_07 PLEASE SCROLL DOWN FOR ARTICLE Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use of the Content. This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http:// www.tandfonline.com/page/terms-and-conditions

Upload: pandi

Post on 22-Mar-2017

216 views

Category:

Documents


4 download

TRANSCRIPT

Page 1: Soil Quality and Soil Productivity in Africa

This article was downloaded by: [University of New Hampshire]On: 19 November 2014, At: 20:45Publisher: Taylor & FrancisInforma Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House,37-41 Mortimer Street, London W1T 3JH, UK

Journal of Sustainable AgriculturePublication details, including instructions for authors and subscription information:http://www.tandfonline.com/loi/wjsa20

Soil Quality and Soil Productivity in AfricaHari Eswaran a , Russell Almaraz a , Paul Reich a & Pandi Zdruli aa US Department of Agriculture , Natural Resources Conservation Service , P.O. Box 2890,Washington, DC, 20013Published online: 12 Oct 2008.

To cite this article: Hari Eswaran , Russell Almaraz , Paul Reich & Pandi Zdruli (1997) Soil Quality and Soil Productivity inAfrica, Journal of Sustainable Agriculture, 10:4, 75-90, DOI: 10.1300/J064v10n04_07

To link to this article: http://dx.doi.org/10.1300/J064v10n04_07

PLEASE SCROLL DOWN FOR ARTICLE

Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) containedin the publications on our platform. However, Taylor & Francis, our agents, and our licensors make norepresentations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of theContent. Any opinions and views expressed in this publication are the opinions and views of the authors, andare not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon andshould be independently verified with primary sources of information. Taylor and Francis shall not be liable forany losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoeveror howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use ofthe Content.

This article may be used for research, teaching, and private study purposes. Any substantial or systematicreproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in anyform to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http://www.tandfonline.com/page/terms-and-conditions

Page 2: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 3: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 4: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 5: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 6: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 7: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 8: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 9: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 10: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 11: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 12: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 13: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 14: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 15: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 16: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014

Page 17: Soil Quality and Soil Productivity in Africa

Dow

nloa

ded

by [

Uni

vers

ity o

f N

ew H

amps

hire

] at

20:

45 1

9 N

ovem

ber

2014