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Infiltration and Adsorption of Dissolved Atrazine and Atrazine Metabolites in Buffalograss Filter Strips

^a Dep. of Soil and Crop Sci., Texas Agric. Exp. Stn., Texas A&M Univ., College Station, TX 77843
^b Dep. of Soil and Crop Sci., Texas Cooperative Extension, Texas A&M Univ., College Station, TX 77843
^c Blackland Res. Center, Texas Agric. Exp. Stn., Temple, TX
^d Environ. Stewardship and Regulatory Policy, Syngenta Crop Protection, P.O. Box 18300, Greensboro, NC

View larger version (42K): [in a new window]   Fig. 1. The mean trapping efficiency for atrazine (ATR), diaminoatrazine (DA), deisopropylatrazine (DIA), desethylatrazine (DEA), and hydroxyatrazine (HA) during the 60-min run-on simulation. Values presented for each compound are the mean of eight replications. Compounds followed by the same letter are not significantly different at P 0.06.

View larger version (14K): [in a new window]   Fig. 2. Relationship between trapping efficiency and infiltration volume for each replication and compound during the 2-yr run-on simulation study.

View larger version (21K): [in a new window]   Fig. 3. Mean mass adsorbed for atrazine (ATR), diaminoatrazine (DA), deisopropylatrazine (DIA), desethylatrazine (DEA), and hydroxyatrazine (HA) during the 60-min run-on simulation. Values presented for each compound are the mean of eight replications. Compounds followed by the same letter are not significantly different at P 0.05.