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The Relationship of Soil Adsorption of EPTC to Oats Injury in Various Soil Types

Published online by Cambridge University Press:  12 June 2017

Floyd M. Ashton  and
Thomas J. Sheets
Floyd M. Ashton
Affiliation:
Department of Botany, Univ. of Calif., Davis
Thomas J. Sheets
Affiliation:
Crops Research Division, ARS, USDA, Dept. of Botany, University of California, Davis
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Extract

Ethyl N,N-di-n-propylthiolcarbamate (EPTC) has shown promise as a pre-emergence herbicide in both greenhouse and field studies. Antognini reported that EPTC was quite volatile. In volatility studies in this laboratory the loss of unformulated technical EPTC from a free liquid surface was 57 micrograms/sq cm/hr at 30° C. It was difficult to understand how a compound as volatile as EPTC could be an effective pre-emergence herbicide. Preliminary tests, utilizing radioactive EPTC, demonstrated that it was less volatile from soil surfaces than from stainless steel or leaf surfaces, indicating that a soil adsorption phenomenon might be involved. Greenhouse studies showed that at a given concentration of EPTC in the soil the phytotoxicity to oats (Avena sativa L.) was not the same in the various soil types studied. The purpose of this study was to investigate the relationship between soil adsorption of EPTC and oats injury in several soil types.

Type
Research Article
Information
Weeds , Volume 7 , Issue 1 , January 1959 , pp. 88 - 90
Copyright
Copyright © 1959 Weed Science Society of America 

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References

Literature Cited

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