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Dissipation of Atrazine from Soil by Corn, Sorghum, and Johnsongrass

Published online by Cambridge University Press:  12 June 2017

H. C. Sikka  and
D. E. Davis
H. C. Sikka
Affiliation:
Department of Botany and Plant Pathology, Auburn University Department of Agricultural Biochemistry and Microbiology, Rutgers, The State University, New Brunswick, New Jersey
D. E. Davis
Affiliation:
Department of Botany and Plant Pathology, Auburn University Agricultural Experiment Station, Auburn, Alabama
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Abstract

The role of corn (Zea mays L.) var. Dixie 18, sorghum (Sorghum vulgare) var. RS 610, and Johnsongrass (Sorghum halepense L.) in dissipation of 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) from Norfolk sandy loam was studied in the field and in a pot-culture experiment in the greenhouse. Atrazine residues were determined by both chemical and bio-assay methods. Corn and Johnsongrass field plots had significantly less atrazine remaining in the 0- to 6-in depth than similarly treated fallow plots 1, 2, 3, and 6 months after planting, and the crops were equally effective in dissipating atrazine from soil. Soil in pots cropped with corn, sorghum, or Johnsongrass had significantly less atrazine remaining than in uncropped pots. Uptake by corn, Johnsongrass, and sorghum within 3 months in the pot-culture experiment accounted for losses of approximately 25, 25, and 20%, respectively, of the herbicide initially present. Bio- and chemical assays were equally sensitive methods of determining atrazine in the soil and gave similar results.

Type
Research Article
Information
Weeds , Volume 14 , Issue 4 , October 1966 , pp. 289 - 293
Copyright
Copyright © 1966 Weed Science Society of America 

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References

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