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Influence of Soil Properties on Adsorption and Phytotoxicity of CIPC, Diuron, and Simazine

Published online by Cambridge University Press:  12 June 2017

C. I. Harris  and
T. J. Sheets
C. I. Harris
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Beltsville, Md.
T. J. Sheets
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Beltsville, Md.
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Abstract

Doses required to reduce fresh weights of seedling oats 50 percent (ED50) in 32 soils were determined for isopropyl N-(3-chlorophenyl)carbamate [CIPC], 3-(3,4-dichlorophenyl)-1,1-dimethylurea [diuron], and 2-chloro-4,6-bis(ethylamino)-s-triazine [simazine]. Physical and chemical properties of soils and the extent of adsorption of the three herbicides on the soils were also determined and evaluated by correlation and multiple regression analysis for usefulness in predicting dose requirements.

Extent of adsorption was most closely correlated with ED50 values for diuron and simazine, but organic matter content was most closely correlated with ED50 values for CIPC. None of the soil properties nor the extent of adsorption provided consistent predictive value for all of the soils and herbicides studied.

Type
Research Article
Information
Weeds , Volume 13 , Issue 3 , July 1965 , pp. 215 - 219
Copyright
Copyright © 1965 Weed Science Society of America 

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References

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