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The Determination and Distribution of Toxic Levels of Arsenic in a Silt Loam Soil

Published online by Cambridge University Press:  12 June 2017

James T. Arnott  and
Albert L. Leaf
James T. Arnott
Affiliation:
College of Forestry, Syracuse
Albert L. Leaf
Affiliation:
College of Forestry, Syracuse
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Abstract

To evaluate the effect of different soil moisture levels on the phytotoxicity of soil applications of arsenic trioxide (As2O3), water and alcohol extractable soil arsenic (As) data were related to the growth and development of 4-month-old Monterey pine (Pinus radiata D. Don.) in greenhouse soil cultures. Also, various rates of As2O3 and water were applied to the surface of soil columns to determine the effective penetration of soluble As. Under normal moisture regime, 8000 lb/A of As2O3 were required for high phytotoxicity on a Chenango silt loam, with excessive moisture resulting in an increase in this phytotoxic effect. With water and alcohol extraction procedures, an adequate range of values was obtained in relation to the total As2O3 rates and plant responses. Lethal concentrations of As in the soil columns were limited to the surface 3 in depth in the silt loam.

Type
Research Article
Information
Weeds , Volume 15 , Issue 2 , April 1967 , pp. 121 - 124
Copyright
Copyright © 1967 Weed Science Society of America 

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References

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