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Title:   Author  item
                                            Rice, Pamelaitem
                                            Hapeman, Cathleenitem
                                            McConnell, Lauraitem
                                            Sadeghi, Aliitem
                                            ISENSEE, ALLAN - RETIRED ARSitem
                                            Heighton Davies, Lynneitem
                                            Harman Fetcho, Jenniferitem
                                            Wauchope, Robert

                                                         - *Don*
  Submitted to: American Chemical Society National Meeting
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/19/2001
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Runoff from tomato production with polyethylene mulch has been implicated in the failure of commercial shell fish farms in the Mid-Atlantic Region of the United States.  This study was conducted to quantify the off-site movement of soil and pesticides with runoff from tomato plots containing polyethylene mulch and hairy vetch mulch.  Seasonal losses of 2 to 4 times  more water and at least 3 times as much sediment was observed from plots with polyethylene mulch.  Chlorothalonil and endosulfan loads were 6 to 19 times greater from polyethylene plots.  Runoff collected from polyethylene mulch plots contained greater loads of copper with 80% measured in the particulate-phase.  Increased soil loss and off-site loading of pesticides measured in runoff from the polyethylene mulch suggests this management practice may have a greater impact on the environment.  The Root Zone Water Quality Model was utilized to simulate the environmental impact of the two  management practices.


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