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3.2 Materials and methods


















                                Vredepeel            Kerlavic                Thiverval-Grignon
                  Location      The Netherlands      France                  France
                                Lat:  51°  32'  29.”   Lat:  48°  02'  59.0''  Long:  Lat:  4°  50'  30  ''  Long:
                                Long: 5° 52' 09.''E   -4° 01' 18.2''         2° 00' 0”
                  Soils         Sandy soil           Stagnic Luvisols        Loamy soil
                                Gleypodzol                                   Orthicluvisol
                  Experiments   Profiles             Lysimeter               Micro  lysimeter    &
                  type                                                       profiles
                  Crop-rotation  Winter wheat        Winter wheat            Maize
                                Mustard              Winter wheat            Maize
                  Sowing dates   1990/22/11          2002/10/29              1993/04/22
                                1991/09/15           2003/11/05              1994/03/05
                  Experimental  Nov 1990-Mar 1992    Nov 2002-March 2004     April 1993-1994
                  Period
                  Tracer        KBr:  111(kg/ha)     Br:59,6 (kg/ha)         Br:125(kg/ha)
                  application                        Br 61,5(kg/ha)          Br: 225(kg/ha)
                  Pesticide     Bentazone 0.8 (kg/ha)  Isoproturon 1.25(kg/ha)   Atrazine 1.00(kg/ha)
                  application                        Isoproturon 1.25(kg/ha)   Atrazine 0.90(kg/ha)
                  Application   1990/09/22           2002/11/26              1993/04/22
                  date                               2003/12/12              1994/05/03
                  Sampling      0.0-2.0              1.0                     0.0-0.3
                  depth (m)
                  Sampling      22/42/104/214/253/25  Daily water,           Monthly
                  dates         3/474 DAA            4-day  accumulation  for
                                                     solute
                  References     55                  56                      57



                   Table 3.1 – Description of sites. DAA stands for Day After Application


















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