After 47 yr of no-till and reduced summerfallow at Lethbridge, Alberta, soil organic carbon concentration and stocks increased 2.14 g kg−1 and 2.22 Mg ha−1, respectively, in the surface 7.5 cm layer. These findings confirmed the conservation value of reducing tillage and summerfallow. The annual changes were relatively small.
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26 May 2016
Long-term (47 yr) effects of tillage and frequency of summerfallow on soil organic carbon in a Dark Brown Chernozem soil in western Canada
Elwin G. Smith,
H. Henry Janzen,
Lauren Scherloski,
Francis J. Larney,
Benjamin H. Ellert
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crop rotation
soil organic carbon
tillage