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Residues of Simazine and Hydroxysimazine in an Orchard Soil

Published online by Cambridge University Press:  12 June 2017

S. U. Khan  and
P. B. Marriage
S. U. Khan
Affiliation:
Res. Branch, Agric. Canada, Ottawa, Ontario, Canada, K1A 0C6
P. B. Marriage
Affiliation:
Res. Branch, Agric. Canada, Harrow, Ontario, Canada, NOR 1G0
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Abstract

Simazine [2-chloro-4,6-bis(ethylamino)-s-triazine] was applied annually at 4.5 kg/ha to uncultivated sandy loam of peach (Prunus persica Batsch) for 7 yr (orchard A) and 9 yr (orchard B). Simazine and the metabolite, hydroxysimazine [2-hydroxy-4,6-bis (ethylamino)-s-triazine] as determined by gas chromatography (GC) persisted for 40 and 28 months in soil of orchard A and B, respectively. However, no progressive accumulation of either compound in large quantities occurred from repeated annual applications of simazine to the orchard soils. No metabolites other than hydroxysimazine were detected. Hydroxysimazine was degraded more slowly than simazine and the residue levels of hydroxysimazine were at least 40 times those of simazine 40 months and 28 months after the final application in orchard A and B, respectively. Both simazine and hydroxysimazine residues were detected in the upper 30 cm of the soil profile.

Keywords

Degradationpersistencegas chromatographymetabolismmass spectrometry
Type
Research Article
Information
Weed Science , Volume 27 , Issue 2 , March 1979 , pp. 238 - 241
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

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