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Regulation of Amitrole and Diuron Toxicity by Phosphorus

Published online by Cambridge University Press:  12 June 2017

F. L. Selman  and
R. P. Upchurch
F. L. Selman
Affiliation:
Crop Science, North Carolina State University at Raleigh; Agricultural Research Division, Velsicol Chemical Corporation, Vero Beach, Florida
R. P. Upchurch
Affiliation:
Agricultural Division, Monsanto Company, St. Louis, Missouri
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Abstract

The influence of soil-applied phosphorus on the phytotoxicity of soil-applied 3-amino-s-triazole (amitrole) and 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron) for corn (Zea mays L.), ryegrass (Lolium multiflorum L.), rye (Secale cereale L.), snapbeans (Phaseolus vulgaris L.), soybeans (Glycine max (L.) Mers.), sorghum (Sorghum vulgare Pers.), wheat (Triticum aestivum L.), cotton (Gossypium hirsutum L.), peanuts (Arachis hypogaea L.), and peas (Pisum sativum L.) was studied under greenhouse conditions. All species except cotton and peanuts indicated an amitrole-phosphorus interaction. Greater phytotoxicity was found for a given rate of amitrole as the soil phosphorus level was increased. A diuron-phosphorus interaction was observed for cotton and soybeans only.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 5 , September 1970 , pp. 619 - 623
Copyright
Copyright © Weed Science Society of America 

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References

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