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Effects of Light Quality on Herbicide Toxicity to Plants

Published online by Cambridge University Press:  12 June 2017

Subhash C. Datta  and
Stuart Dunn
Subhash C. Datta
Affiliation:
Botany Department, Agricultural Experiment Station, University of New Hampshire, Durham, New Hampshire
Stuart Dunn
Affiliation:
Botany Department, Agricultural Experiment Station, University of New Hampshire, Durham, New Hampshire
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Extract

The purpose of this study was to find more information on how and why certain herbicides act as they do on plants. The need for this kind of basic fact finding is often emphasized (1, 5, 6, 8). One approach to this problem is to study the effects of various environmental factors on herbicide behavior with plants. An effective way is to hold certain factors constant and alter the amounts or qualities of one or more other factors. Previous work with various colored fluorescent lights (4, 7) had shown marked differences in plant response to various portions of the visible light spectrum. Using essentially the same technique, this study was made of the influence of light quality in modifying the herbicidal effect of 2,4–dichlorophenoxyacetic acid (hereafter called 2,4–D) as various salts and esters. The combined herbicide–light effect was measured principally by dry weight variations from those of normal (control) plants.

Type
Research Article
Information
Weeds , Volume 7 , Issue 1 , January 1959 , pp. 55 - 65
Copyright
Copyright © 1959 Weed Science Society of America 

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References

Literature Cited

1. Blackman, G. E., Templeman, W. G., and Halliday, D. J. Herbicides and selective toxicity. Ann. Rev. Plant Physiol. 2:199–210. 1951.Google Scholar
2. Datta, S. C., and Dunn, S. The action of 2,4–D on mustard as modified by six different light qualities. Proc. NEWCC 11:275–282. 1957.Google Scholar
3. Dunn, S., and Datta, S. C. Light effects on phytotoxicity with respect to herbicides. Proc. NEWCC 10:246–251. 1956.Google Scholar
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