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Simazine Distribution and Degradation in Red Pine Seedlings

Published online by Cambridge University Press:  12 June 2017

P. S. Dhillon ,
W. R. Byrnes  and
C. Merritt
P. S. Dhillon
Affiliation:
Community Development Counselling Service, Arlington, Virginia, and Professor of Forestry
W. R. Byrnes
Affiliation:
Community Development Counselling Service, Arlington, Virginia, and Professor of Forestry
C. Merritt
Affiliation:
Purdue University, Lafayette, Indiana
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Abstract

Distribution and degradation of 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine) at 5, 10, 15, and 20 ppmw in red pine (Pinus resinosa Ait.) seedlings were investigated using 14C-ring-labeled simazine dispersed in agar medium. Simazine readily entered red pine roots and moved rapidly into stem and needles. Accumulation was greatest in roots, next in stems, and least in needles. Significant differences in simazine uptake by roots were observed among concentrations between 5 and 20 ppmw in the incubation medium. Radiochromatographic scans revealed that a small amount of simazine was degraded to three unknown compounds by both fresh and boiled homogenates from whole plants, needles, stems, and roots. There were no observable differences in the amount of simazine degraded by homogenates of each separate plant part.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 3 , July 1968 , pp. 374 - 376
Copyright
Copyright © Weed Science Society of America 

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