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  4. Formation of soil-bound residues of cyprodinil and their plant uptake
 
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1997
Journal Article
Title

Formation of soil-bound residues of cyprodinil and their plant uptake

Abstract
The fungicide cyprodinil [4-cyclopropyl-6-methyl-2-(phenylamino)pyrimidine] labeled with 14C in either the phenyl or the pyrimidyl ring was incubated with four different soils under various conditions to evaluate the formation of bound residues and their subsequent plant uptake. About 60 per cent of the initially applied radioactivity was bound to nonsterile soils within 90-180 days, whereas negligible binding was observed under sterile and anaerobic conditions. More binding was observed at higher soil pH, cation exchange capacity, and organic carbon and nitrogen contents. When spring barley was grown in the methanol-extracted soil, the plant uptake of bound residues amounted to about 0.2 per cent for the phenyl label and 1.2 per cent for the pyrimidyl label. The difference indicated that the pyrimidyl moiety was detached from the cyprodinil molecule and taken up more readily.
Author(s)
Dec, J.
Haider, K.
Rangaswamy, V.
Schäffer, A.
Fernandes, E.
Bollag, J.-M.
Journal
Journal of agricultural and food chemistry  
DOI
10.1021/jf960532s
Language
English
IUCT  
Keyword(s)
  • bound residues

  • plant uptake

  • cyprodinil

  • bioavailability

  • barley

  • fungicide

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