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Prevention of EPTC—Induced Epicuticular Wax Aggregation on Corn (Zea mays) with R-25788

Published online by Cambridge University Press:  12 June 2017

J. R. C. Leavitt  and
Donald Penner
Donald Penner
Affiliation:
Pestic. Res. Center, Dep. Crop Soil Sci., Michigan State Univ., East Lansing, MI 48824
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Abstract

Scanning electron microscopy (SEM) showed that EPTC (S-ethyl dipropylthiocarbamate) caused an aggregation of the epicuticular wax layer of corn (Zea mays L.). R-25788 (2,2-dichloro-N,N-diallylacetamide) prevented this aggregation when applied in combination with EPTC. Neither EPTC, metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], nor R-25788 changed the weight of chloroform extractable epicuticular wax on corn leaves. EPTC apparently does not block lipid synthesis in corn as it does in other plant species. Thus R-25788 does not protect corn from EPTC or metolachlor by overcoming such a block. EPTC did affect wax arrangement on the leaf surface and caused an increase in the cuticular transpiration of corn and predisposed corn to injury from subsequent postemergence applications of paraquat (1,1′-dimethyl-4,4′-bipyridinium ion). R-25788 protected corn against these deleterious effect.

Keywords

Transpirationherbicide interactionsherbicide antidotesmetolachlor
Type
Research Article
Information
Weed Science , Volume 27 , Issue 1 , January 1979 , pp. 47 - 50
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

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