Soil samples were taken from the top layer (0e10 cm) of a
French experimental site (Dijon, Burgundy), immediately placed in
a cooler and taken to the laboratory where they were passed
through a 3 mm sieve, removing visible organic residues by hand
(Angers and Recous, 1997), and stored at 4 C for 8 days before use.
The soil is a clay-loam calcareous Cambisol (IUSS, 2015) with (% of
dry soil): 37.7 of clay, 29.6 of silt, 15.2 of sand, 16.7 of CaCO3, 1.63 of
organic carbon, and pH in water of 8.2.