| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Agriculture et agro-alimentaire Canada, Centre de recherches, 2560 boul. Hochelaga, Ste-Foy, Québec, Canada G1V 2J3
Départment de phytologie, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec (Québec), Canada G1K 7P4
*Corresponding author (francois-p.chalifour{at}plg.ulaval.ca).
ABSTRACT
Understanding the mechanisms controlling crop effects on soil aggregation is necessary to develop sustainable soil management practices. Changes in soil aggregation, carbohydrates, and fungal vs. bacterial biomass were monitored following a shift from fallow (bare soil) to various cropping systems. Faba bean (Vicia faba L.) and wheat (Triticum aestivum L.) were used as annual cropping systems, while alfalfa (Medicago sativa L.), timothy (Phleum pratense L.), bromegrass (Bromus inermis L.), and reed canarygrass (Phalaris arundinacea L.) were used as perennial cropping systems. Crops were established in spring 1989, on a silty clay loam (fine, mixed, frigid Typic Dystro-chrept) and a clay loam (fine-loamy, mixed, frigid Typic Humaquept) near Québec City (Canada). After three growing seasons, the mean-weight diameter of water-stable aggregates (MWD) was higher under reed canarygrass (2.26 mm in the clay loam and 2.45 mm in the silty clay loam) and timothy (2.13 and 2.26 mm) than under faba bean (1.92 and 1.89 mm) or wheat (2.06 and 1.57 mm). Intermediate values were found under alfalfa and bromegrass. Changes in MWD were not correlated with microbial biomass C. Acid-hydrolyzable carbohydrates correlated with MWD in the silty clay loam (r2 = 0.42**) but the relationship decreased with higher carbohydrate levels in the clay loam (r2 = 0.05). Close correlations were found between MWD and both fungal glucosamine (r2 = 0.68***, soils combined) and bacterial muramic acid (r2 = 0.48***). Changes in MWD were mostly reflected in aggregates >2 mm, and the close relationship with fungal glucosamine suggests that fungi played a dominant role in soil macroaggregation. Measurement of muramic acid and glucosamine is proposed as a potential approach to compare bacterial vs. fungal contributions to soil aggregation.
Received for publication July 24, 1995.
This article has been cited by other articles:
|
|
 |
|
  M. Bipfubusa, D. A. Angers, A. N'Dayegamiye, and H. Antoun Soil Aggregation and Biochemical Properties following the Application of Fresh and Composted Organic Amendments Soil Sci. Soc. Am. J., January 11, 2008; 72(1): 160 - 166. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Z. Hafida, J. Caron, and D. A. Angers Pore Occlusion by Sugars and Lipids as a Possible Mechanism of Aggregate Stability in Amended Soils Soil Sci. Soc. Am. J., October 29, 2007; 71(6): 1831 - 1839. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. Liang, R. Fujinuma, L. Wei, and T. C. Balser Tree species-specific effects on soil microbial residues in an upper Michigan old-growth forest system Forestry, January 1, 2007; 80(1): 65 - 72. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Six, S. D. Frey, R. K. Thiet, and K. M. Batten Bacterial and Fungal Contributions to Carbon Sequestration in Agroecosystems Soil Sci. Soc. Am. J., February 27, 2006; 70(2): 555 - 569. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. T. Simpson, S. D. Frey, J. Six, and R. K. Thiet Preferential Accumulation of Microbial Carbon in Aggregate Structures of No-Tillage Soils Soil Sci. Soc. Am. J., July 1, 2004; 68(4): 1249 - 1255. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. Okamoto and K. Okada Differential responses of growth and nitrogen uptake to organic nitrogen in four gramineous crops J. Exp. Bot., July 1, 2004; 55(402): 1577 - 1585. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. P. Burford, E. P. Burford, M. Fomina, and G. M. Gadd Fungal involvement in bioweathering and biotransformation of rocks and minerals Mineralogical Magazine, December 1, 2003; 67(6): 1127 - 1155. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Solomon, F. Fritzsche, M. Tekalign, J. Lehmann, and W. Zech Soil Organic Matter Composition in the Subhumid Ethiopian Highlands as Influenced by Deforestation and Agricultural Management Soil Sci. Soc. Am. J., January 1, 2002; 66(1): 68 - 82. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. Amelung, J. M. Kimble, S. Samson-Liebig, and R. F. Follett Restoration of Microbial Residues in Soils of the Conservation Reserve Program Soil Sci. Soc. Am. J., November 1, 2001; 65(6): 1704 - 1709. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A.J. Franzluebbers, S.F. Wright, and J.A. Stuedemann Soil Aggregation and Glomalin under Pastures in the Southern Piedmont USA Soil Sci. Soc. Am. J., May 1, 2000; 64(3): 1018 - 1026. [Abstract] [Full Text]
|
|
|
|
|
|
D. P. Rasse, A. J.M. Smucker, and D. Santos Alfalfa Root and Shoot Mulching Effects on Soil Hydraulic Properties and Aggregation Soil Sci. Soc. Am. J., March 1, 2000; 64(2): 725 - 731. [Abstract] [Full Text]
|
|
|
|
|
|
G. Guggenberger, S. D. Frey, J. Six, K. Paustian, and E. T. Elliott Bacterial and Fungal Cell-Wall Residues in Conventional and No-Tillage Agroecosystems Soil Sci. Soc. Am. J., September 1, 1999; 63(5): 1188 - 1198. [Abstract] [Full Text]
|
|
|
|
|
|
M. H. Chantigny, D. A. Angers, and C. J. Beauchamp Aggregation and Organic Matter Decomposition in Soils Amended with De-Inking Paper Sludge Soil Sci. Soc. Am. J., September 1, 1999; 63(5): 1214 - 1221. [Abstract] [Full Text]
|
|
|
|
|
|
I.C. Mendes, A.K. Bandick, R.P. Dick, and P.J. Bottomley Microbial Biomass and Activities in Soil Aggregates Affected by Winter Cover Crops Soil Sci. Soc. Am. J., July 1, 1999; 63(4): 873 - 881. [Abstract] [Full Text]
|
|
| 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 | |||
