Atrazine and simazine in runoff from conventional and no-till corn watersheds |
| |
| Institution: | 1. ENEA - Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Via Martiri di Monte Sole 4, 40129 Bologna, Italy;2. Interdepartmental Research Centre for Environmental Science – CIRSA, Alma Mater Studiorum University of Bologna, Via S. Alberto 163, 48123 Ravenna, Italy;3. Division for Quantitative Sustainability Assessment, DTU Management Engineering, Produktionstorvet, Building 424, DK-2800 Kgs. Lyngby, Denmark;4. Ecoinnovazione SRL, Via D''Azeglio, 51, 40123 Bologna (BO), Italy;5. Department for Civil, Chemical, Environmental and Materials Engineering, Alma Mater Studiorum University of Bologna, Via Terracini 28, 40131 Bologna, Italy;1. UMR 1402 ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850, Thiverval-Grignon, France;2. Alterra, Wageningen University and Research Centre, PO Box 47, 6700 AA Wageningen, The Netherlands |
| |
| Abstract: | A study was initiated to compare the surface runoff of atrazine and simazine from adjacent conventional tillage (CT) and no-tillage (NT) corn watersheds that were otherwise identical. Runoff was collected in H-type flumes and Coshocton wheels. Atrazine 2-chloro-4-(ethylamino)-6-(isopropylamino) -s-triazine] and simazine 2-chloro-4,6-bis(ethylamino)-s-triazine] were applied at 2.2 kg a.i. ha−1 to both watersheds annually from 1979 to 1982.There was less runoff of water, atrazine and simazine from the NT watershed compared to the CT watershed each year that a major runoff event occurred during the growing season. Between 1979 and 1982, total volume of runoff was 27% less from the NT compared to the CT watershed. Most of the herbicide loss in surface runoff occurred during the first runoff event after application. The concentration of simazine in runoff was much less than that of atrazine. The greatest runoff of herbicides occurred in 1979 when 1.6 and 1.1% of the atrazine applied moved from the CT and NT watershed, respectively, and 0.52 and 0.36% of the simazine applied moved from the CT and NT watershed, respectively. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
