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Phytotoxicity of s–triazine Herbicides to Corn and Weeds as Related to Structural Differences

Published online by Cambridge University Press:  12 June 2017

C. G. McWhorter  and
J. T. Holstun Jr.
C. G. McWhorter
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture and the Delta Branch, Mississippi Agricultural Experiment Station, Stoneville, Mississippi
J. T. Holstun Jr.
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Stoneville, Mississippi
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Extract

A number of s–triazine derivatives have shown considerable promise for pre-emergence weed control. Activity and selectivity as influenced by structural differences between many derivatives have been discussed by Gysin. The phytotoxicity of some of these materials is greatly influenced by the characteristics of the soil to which the herbicides is applied. Although solubility may be important in the toxicities of the s-triazines, adsorption may be of equal or greater importance in the presence of high organic matter or high colloid content. In solution these factors may be eliminated so that a more accurate determination of phytotoxicity and physiological selectivity may be made. The most successful pre-emergence herbicides for shallow planted crops possess at least some physiological selectivity.

Type
Research Article
Information
Weeds , Volume 9 , Issue 4 , October 1961 , pp. 592 - 599
Copyright
Copyright © 1961 Weed Science Society of America 

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References

Literature Cited

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