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


     

Published online 21 June 2006
Published in Soil Sci Soc Am J 70:1338-1348 (2006)
DOI: 10.2136/sssaj2005.0190
© 2006 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 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 HighWire
Right arrow Citing Articles via ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Habteselassie, M. Y.
Right arrow Articles by Norton, J. M.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Habteselassie, M. Y.
Right arrow Articles by Norton, J. M.
Agricola
Right arrow Articles by Habteselassie, M. Y.
Right arrow Articles by Norton, J. M.
Related Collections
Right arrow Soil Microbiology
Right arrow Nitrogen
Right arrow Microbial Processes

Gross Nitrogen Transformations in an Agricultural Soil after Repeated Dairy-Waste Application

Mussie Y. Habteselassiea, John M. Starkb, Bruce E. Millerc, Seth G. Thackera and Jeanette M. Nortona,*

a Dep. of Plants, Soils, and Biometeorology
b Dep. of Biology
c Dep. of Agricultural Systems Technology and Education, Utah State Univ., Logan, UT 84322


Figure 1
View larger version (43K):

[in a new window]
  		Fig. 1. Gross N transformation rates (GMR-gross N mineralization rate; GACR- gross ammonium consumption rate; GNR-gross nitrification rate; GNCR-gross nitrate consumption rate) of soil treated with dairy-waste compost (DC), liquid dairy waste (LW), and ammonium sulfate (AS) for the last 6 yr to supply 100 and 200 kg available N ha–1 annually. Values represent means ±1 SE (n = 4).

 

Figure 2
View larger version (16K):

[in a new window]
  		Fig. 2. Changes in inorganic N during laboratory incubations of soils treated with dairy-waste compost (DC), liquid dairy waste (LW), and ammonium sulfate (AS) to supply 100 and 200 kg available N ha–1 annually for 6 yr. Values represent means (n = 4).

 

Figure 3
View larger version (29K):

[in a new window]
  		Fig. 3. Net N mineralization and nitrification rates of soil treated with dairy-waste compost (DC), liquid dairy waste (LW), and ammonium sulfate (AS) to supply 100 and 200 kg available N ha–1 annually for 6 yr. Values represent means ±1 SE (n = 4).

 

Figure 4
View larger version (19K):

[in a new window]
  		Fig. 4. Carbon mineralization rates during laboratory incubations of soils treated with dairy-waste compost (DC), liquid dairy waste (LW), and ammonium sulfate (AS) to approximately supply 100 and 200 kg available N ha–1 annually for 6 yr. Values represent means ±1 SE (n = 4).

 

Figure 5
View larger version (13K):

[in a new window]
  		Fig. 5. Model estimates of N/C ratio of microbial substrates during laboratory incubations of soils treated with DC200, LW200, and AS200. The microbial efficiency value (e) varied from 0.3 to 0.7. Values represent means ±1 SE (n = 4).

 




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
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 2006 by the Soil Science Society of America.