Uptake of terbuthylazine and its medium polar metabolites into maize plants

Autor(en): Gayler, S
Trapp, S
Matthies, M
Schroll, R
Behrendt, H
Stichwörter: BARLEY; Environmental Sciences; Environmental Sciences & Ecology; LIPOPHILICITY; NON-IONIZED CHEMICALS
Erscheinungsdatum: 1995
Herausgeber: ECOMED PUBLISHERS
Journal: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volumen: 2
Ausgabe: 2
Startseite: 98
Seitenende: 103
Zusammenfassung: 
The uptake of terbuthylazine and its medium polar metabolites into maize plants under outdoor conditions is investigated. For this purpose, a dynamical fate model consisting of soil, plant and air is developed. The model calculations are compared with experimental results of outdoor lysimeter tests, carried out with C-14-labelled herbicide applied to sandy agricultural soil at a single application rate of 890 g/ha. Approximately 0.3% of the applied activity remains in all the plants after the vegetation period. The model predicts that about three times that amount is volatilized from the plants into the air. Activity uptaken from soil and volatilized from plant surface into air is predominately associated with metabolites. During the whole vegetation period the fraction of unchanged terbuthylazine in the plants is very small (less than 1% of the extractable activity).
ISSN: 09441344
DOI: 10.1007/BF02986726

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