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Phosphorus Fertilization and the Phytotoxicity of Simazine

Published online by Cambridge University Press:  12 June 2017

Russell S. Adams Jr.
Russell S. Adams Jr.*
Affiliation:
Department of Soil Science
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Abstract

In greenhouse experiments high levels of phosphorus tended to suppress growth of soybeans, oats, and foxtail in the presence of 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine) as compared to controls containing no simazine. However, this relationship was not significant, varying with the soil used in the experiment. Emergence of the seedling was delayed and the concentration of ions in solution increased as phosphorus applications were increased. Mineral uptake by soybean shoots was unaffected by phosphorus or simazine alone, but markedly disrupted in the presence of both simazine and phosphorus. Changes in mineral uptake were typical of effects produced by phosphorus toxicity, indicating that simazine reduced the amount of phosphorus required to produce salt injury.

Type
Research Article
Information
Weeds , Volume 13 , Issue 2 , April 1965 , pp. 113 - 116
Copyright
Copyright © 1965 Weed Science Society of America 

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References

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