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Responses of Several Corn (Zea mays) Cultivars and Weed Species to EPTC With and Without the Antidote R-25788

Published online by Cambridge University Press:  12 June 2017

Erasmo G. Sagaral  and
Chester L. Foy
Erasmo G. Sagaral
Affiliation:
Dep. Plant Pathol. and Physiol., Virginia Polytech. Inst. and State Univ., Blacksburg, VA 24061
Chester L. Foy
Affiliation:
Dep. Plant Pathol. and Physiol., Virginia Polytech. Inst. and State Univ., Blacksburg, VA 24061
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Abstract

Field experiments were conducted to determine the effectiveness of the herbicide antidote R-25788 (N,N-diallyl-2,2-dichloroacetamide) in protecting corn (Zea mays L.) cultivars from EPTC (S-ethyl dipropylthiocarbamate) injury. Preplant-incorporated applications of EPTC, with and without R-25788, were made to a fine sandy loam in 1976 and a loamy sand soil in 1977. EPTC at 6.7 kg/ha was 20 to 30% more injurious to the susceptible cultivars grown in sandy, lower organic-matter soil than in fine sandy loam. R-25788 did not decrease the weed-control efficacy of EPTC. The cultivar ‘TXS114’ was highly tolerant to EPTC at 6.7 kg/ha with or without antidote protection. Most of the other EPTC-susceptible cultivars showed significant stand improvement when R-25788 was used in combination with EPTC. R-25788 did not alleviate EPTC phytotoxicity toward ‘XL55’ and ‘XL379’ cultivars. EPTC applied in combination with R-25788 showed no, or only, slight injury to all other cultivars.

Keywords

N,N-diallyl-2,2-dichloroacetamidephytotoxicityherbicide-antidotethiocarbamates
Type
Research Article
Information
Weed Science , Volume 30 , Issue 1 , January 1982 , pp. 64 - 69
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

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