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Arsenic Translocation in Nutsedge Tuber Systems and its Effect on Tuber Viability

Published online by Cambridge University Press:  12 June 2017

Ethan C. Holt,
J. L. Faubion,
W. W. Allen and
G. G. McBee
Ethan C. Holt
Affiliation:
Soil and Crop Sciences Department, Texas A&M University, College Station
J. L. Faubion
Affiliation:
Soil and Crop Sciences Department, Texas A&M University, College Station
W. W. Allen
Affiliation:
Soil and Crop Sciences Department, Texas A&M University, College Station
G. G. McBee
Affiliation:
Soil and Crop Sciences Department, Texas A&M University, College Station
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Abstract

Purple nutsedge (Cyperus rotundus L.) was grown under greenhouse conditions as single tubers and various tuber chain systems. Single and repeated applications of amine methylarsonate were made to shoots of single tubers and shoots of terminal tubers in chain arrangements, and visual toxicity symptoms were noted in shoot growth both from treated tubers and from other tubers in chain arrangements. Arsenic (As) was translocated (as indicated by As content) laterally to tubers separated by at least four tubers from the treated shoot. The tuber on the opposite end of the chain from the treated shoot tended to be higher in As content than the middle tubers, and translocated As tended to be higher in tubers from which active growth was present or developed. No apparent relationship was found between As content of tubers and their ability to produce new shoots. There was some tendency for tubers to produce more than one shoot in the initial regrowth following treatment. Tuber lethality following repeated treatments evidently was due to depletion of food reserves and/or bud supply from increased sprouting and not to the accumulation of a specific level of As in the tuber.

Information

Type
Research Article
Information
Weeds , Volume 15 , Issue 1 , January 1967, pp. 13 - 15
Copyright
Copyright © 1967 Weed Science Society of America 

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References

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