SOIL ORGANIC-CARBON DYNAMICS AFTER 80 YEARS OF CROPPING A DARK BROWN CHERNOZEM

Authors
MONREAL CM JANZEN HH
Citation
Cm. Monreal et Hh. Janzen, SOIL ORGANIC-CARBON DYNAMICS AFTER 80 YEARS OF CROPPING A DARK BROWN CHERNOZEM, Canadian Journal of Soil Science, 73(1), 1993, pp. 133-136
Citations number
14
Categorie Soggetti
Agriculture Soil Science
Journal title
Canadian Journal of Soil Science → ACNP
ISSN journal
00084271
Volume
73
Issue
1
Year of publication
1993
Pages
133 - 136
Database
ISI
SICI code
0008-4271(1993)73:1<133:SODA8Y>2.0.ZU;2-1
Abstract
The temporal change of soil organic-carbon (C(org)) was studied in soi l samples taken from long-term crop rotations at Lethbridge. Between 1 910 and 1990, net C(org) losses for the 0-15 cm depth varied between 2 3% under fallow-wheat (FW) and 21% under fallow-wheat-wheat (FWW) and 17% under continuous wheat (W). Analysis of variance and an LSD test i ndicated that in 1990 the surface C(org) concentrations were similar a mong all crop rotations. C(org) in the 15-30 cm depth decreased over t ime and was significantly lower than in surface samples.