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Behavior of bensulfuron-methyl in an agricultural alkaline soil

AutorDelgado-Moreno, L.; Saacutenchez, L.; Castillo Martín, A.; Pot, V.; Pentildea, A.
Palabras claveBensulfuron methyl
Field test
Soil solution samplers
Model prediction
Preferential flow
Fecha de publicaciónmar-2006
EditorInforma Healthcare
CitaciónJournal of Environmental Science and Health, Part B 42(3): 241 - 248 (2006)
ResumenA field experiment to determine the available bensulfuron-methyl (BSM) in the upper soil layer was conducted in an agricultural area in the South of Spain. To facilitate herbicide analysis, two application rates were employed, 200 g ha-1 and 5 kg ha-1. Samples of upper soil and soil solution were collected. Soil solution was sampled by means of metallic samplers, placed at a depth of 35 cm. In the plots receiving the lower dose ceramic suction, porous cups were also installed. Results from soil solution samples showed that the maximum BSM concentration was found after 8-10 days for the high irrigation supply (945 mm) and after 18-25 days for the lower irrigation regime (405 mm). The mathematical model FOCUSPELMO 1.1.1 was applied to interpret the data obtained in the field experiments. In general, there was a reasonable agreement between experimental and simulated data for soil samples, although the model did not acceptably predict herbicide concentrations in water soil samples. Ceramic cups sampled a higher soil water volume and more frequently than did the metallic samplers. However some variable results were attributed to preferential flow.
Versión del editorhttp://dx.doi.org/10.1080/03601230701229114
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