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Cotton Response to Temperature and Organic Arsenicals

Published online by Cambridge University Press:  12 June 2017

P. E. Keeley  and
R. J. Thullen
P. E. Keeley
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Shafter, California
R. J. Thullen
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Shafter, California
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Abstract

Nonradioactive and 14C-organic arsenical herbicides were applied to foliage of young cotton (Gossypium hirsutum L., var. Acala SJ-1) at various temperatures. An application of 3.36 kg/ha of monosodium methanearsonate (MSMA), with and without 0.5% surfactant, severely injured plants exposed at 13 C. Similar injury resulted when plants were exposed and treated at 20 C with MSMA containing 0.5% surfactant. Applications of MSMA did not injure plants exposed at 31 C. Disodium methanearsonate (DSMA) was less injurious to cotton than MSMA. Only slight to moderate injury resulted when plants were exposed and treated at 13 C with 3.36 kg/ha of DSMA containing 0.5% surfactant. Applications at higher temperatures did not injure cotton. Cotyledons absorbed 14C-methanearsonic acid (MAA) and 14C-MSMA more readily than 14C-DSMA. Contact injury from these herbicides was slight at 13 C but was pronounced at 20 and 29 C. Generally, translocation of herbicides into developing true leaves was slight. The exception resulted from applications of 14C-MSMA to plants at 13 C when contact injury was negligible.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 3 , May 1971 , pp. 297 - 300
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

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