Activity,adsorption, mobility and field persistence of sulfosulfuron in soil |
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Authors: | Eleftherohorinos I Dhima K Vasilakoglou I |
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Institution: | (1) Laboratory of Agronomy, University of Thessaloniki, 541 24 Thessaloniki, Greece;(2) Technological Educational Institute of Larisa, 411 10 Larisa, Greece |
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Abstract: | Petri dish bioassays, based on root response of corn grown in soil or in perlite, were used to study the activity, adsorption,
mobility and field persistence of sulfosulfuron in a silty clay loam and a sandy loam soil. Both bioassays indicated that
activity of sulfosulfuron increased with increasing herbicide concentration, and to a slightly greater degree in sandy loam
soil than in silty clay loam soil. More sulfosulfuron was adsorbed on the sandy loam (not biologically available) than on
the silty clay loam soil. Consequently, slightly greater amounts of sulfosulfuron were leached through the silty clay loam
than through the sandy loam soil. Biologically available sulfosulfuron was not detected at depths below 40 cm after application
in sandy loam, but this was not the case for the silty clay loam soil. In 2002, all sulfosulfuron rates showed field persistence
of less than 5 months. On the other hand, in 2003, biologically available sulfosulfuron was detected in the 0–10-cm soil depth
150 days after application.
http://www.phytoparasitica.org posting May 6, 2004. |
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Keywords: | Adsorption leaching persistence sulfosulfuron 1-(4 6-dimethoxypyrimidin-2-yl)-3-(2-ethanesulfonyl-imidazo[1 2-α ]pyridine-3 -yl)sulfonylurea |
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