Soil Dissipation and Runoff Losses of the Herbicide Pendimethalin in Tobacco Field

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2009 (EN)
Soil Dissipation and Runoff Losses of the Herbicide Pendimethalin in Tobacco Field (EN)

Triantafyllidis, V. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Triantafyllidis, V. (EN)

The loss of pendimethalin, a selective herbicide, was determined in runoff water from loamy soil plots of various surface slopes cultivated with tobacco, over a period of 193 days. Conditions were selected to simulate agricultural practices employed in the Mediterranean region. The surface slopes of plots were 0%, 2.5%, 5%, 7.5%, and 10% and both cultivated and uncultivated (control) areas were simultaneously monitored. The cumulative losses of pendimethalin in surface runoff, as percentage of the initial applied active ingredient, were 0.067% for tilled and 0.098% for untilled soil of 10% slope, while for the plots of 0% slope they were ten times lower, 0.006% and 0.009% respectively. The maximum concentrations in runoff water reached 15.87 mu g L(-1) and were detected after the second run off event. The dissipation in top soil was studied for a period of 129 days. The half-lives that were calculated using first order kinetics ranged from 23 to 27.2 days in non-cropped soil and from 22.3 to 26.2 in tobacco plots. (EN)

herbicide (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Water Air and Soil Pollution (EN)



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