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Antagonistic Interaction of EPTC and 2,4-D

Published online by Cambridge University Press:  12 June 2017

C. E. Beste  and
M. M. Schreiber
C. E. Beste
Affiliation:
Department of Botany and Plant Pathology, Purdue University, Lafayette, Indiana
M. M. Schreiber
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Purdue University, Lafayette, Indiana
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Abstract

An antagonistic interaction between S-ethyl dipropylthiocarbamate (EPTC) and (2,4-dichlorophenoxy)acetic acid (2,4-D) was observed on sorghum (Sorghum vulgare Pers.) and corn (Zea mays L.) after 21 days growth in soil incorporated treatments. Increasing the 2,4-D concentration increased the antagonism to EPTC. The antagonistic interaction was also observed on sorghum grown in solution culture. The antagonistic interaction occurred when the site of uptake was restricted to either the root or shoot zone of sorghum. Uptake studies with 14C-EPTC indicated that 2,4-D does not interfere with uptake or subsequent movement of 14C radioactivity within sorghum plants. Respiration of sorghum treated with the combination EPTC-2,4-D appeared to be normal. Respiration of EPTC-treated plants was inhibited.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 4 , July 1970 , pp. 484 - 488
Copyright
Copyright © 1970 Weed Science Society of America 

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References

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