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Degradation of ¹⁴C-Atrazine Bound Residues in Brown Soil and Rendzina Fractions

^a Centre de Pédologie Biologique, CNRS, 17 rue Notre Dame des Pauvres, BP 5, 54501, Vanduvre-lès-Nancy Cedex, France
^b UMR-CNRS 5561 Biogéosciences, 6 bd Gabriel, 21000 Dijon, France

View larger version (18K): [in a new window]   Fig. 1. Cumulative evolution of total C-CO2 released from incubated samples. Boxes = biotic assays; circles = abiotic assays; open symbols = 0- to 5000-µm fractions; filled symbols = 0- to 50-µm fractions.

View larger version (15K): [in a new window]   Fig. 2. Cumulated 14C-CO2 released from samples incubated in biotic conditions. Open symbols = 0- to 5000-µm fractions; filled symbols = 0- to 50-µm fractions.

View larger version (18K): [in a new window]   Fig. 3. Evolution of the ratio between cumulated rates of 14C-CO2 and C-CO2 during the sample incubation. Boxes = brown soil; circles = rendzina; open symbols = 0- to 5000-µm fractions; filled symbols = 0- to 50-µm fractions.

View larger version (42K): [in a new window]   Fig. 4. Extractable atrazine residues after sample incubation. A = abiotic assays, B = biotic assays.