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Persistence of Preemergence Applications of Chlorsulfuron, Metsulfuron, Triasulfuron, and Tribenuron in Three Soils in Greece

Published online by Cambridge University Press:  12 June 2017

Eleni Kotoula-Syka
Affiliation:
Plant Prot. Inst., P.O. Box 324, 57001 Thermi, Thessaloniki
Ilias G. Eleftherohorinos
Affiliation:
Lab. Agron., Box 233, Univ. Thessaloniki, 54006 Thessaloniki, Greece
Athanasios A. Gagianas
Affiliation:
Lab. Agron., Box 233, Univ. Thessaloniki, 54006 Thessaloniki, Greece
Achilleas G. Sficas
Affiliation:
Lab. Agron., Box 233, Univ. Thessaloniki, 54006 Thessaloniki, Greece

Abstract

A pot bioassay, based on root growth of pregerminated corn, was used to evaluate factors influencing field persistence of chlorsulfuron, metsulfuron, triasulfuron, and tribenuron, which were applied preemergence at 0, 10, 20, and 40 g ai ha−1 to wheat grown in three soils that differed in texture (sandy loam, sandy clay loam, and silty clay loam) and pH (7.9, 4.7, and 7.6). Residual activity and leaching of all herbicides in all soils increased with increasing rate of application, with the exception of tribenuron which showed practically no residual activity and leaching in sandy clay loam soil. Sunflower sown 4 mo after tribenuron application in all soils was not injured by any rate used but was significantly affected by the other herbicides. Lentil and sugarbeet also were affected by all herbicides in all soils. These three crops sown 8 mo after herbicide application were not affected by any herbicide used in the sandy clay loam soil but were injured by chlorsulfuron, triasulfuron, and metsulfuron in the sandy loam soil. Only lentil and sugarbeet were injured by chlorsulfuron in the silty clay loam soil.

Type
Soil, Air, and Water
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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