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Sethoxydim and Crop Oil Concentrate Increase Pyridate Phytotoxicity in Transplanted Cabbage (Brassica oleracea)

Published online by Cambridge University Press:  12 June 2017

Robin R. Bellinder ,
Jonathan Kirkwyland ,
Russell W. Wallace  and
Marija Arsenovic
Robin R. Bellinder
Affiliation:
Department of Fruit and Vegetable Science, Cornell University, Ithaca, NY 14853-0327
Jonathan Kirkwyland
Affiliation:
Department of Fruit and Vegetable Science, Cornell University, Ithaca, NY 14853-0327
Russell W. Wallace
Affiliation:
Department of Fruit and Vegetable Science, Cornell University, Ithaca, NY 14853-0327
Marija Arsenovic
Affiliation:
Department of Fruit and Vegetable Science, Cornell University, Ithaca, NY 14853-0327
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Abstract

Greenhouse and field studies were conducted in 1991 and 1992 to determine the potential for interaction among pyridate (0.5, 1.0 kg ai/ha), sethoxydim (0.22 kg ai/ha), and crop oil concentrate (COC) (1.25% v/v) applied alone or in two- and three-way combinations to transplanted cabbage. Additionally, the effect of applying sethoxydim and COC 1 and 2 d before and after application of pyridate was investigated. In greenhouse-grown cabbage, injury increased twofold and dry weight was reduced 15% when pyridate dose was doubled. Sethoxydim increased pyridate injury significantly, reducing dry weight 31%. When COC was applied with pyridate, injury increased and dry weight decreased linearly. Despite substantial crop injury 7 d after treatment with pyridate alone, pyridate + sethoxydim, and pyridate + COC, yields of field-grown cabbage were reduced significantly in 1 yr only when the three materials were combined. Pyridate injury decreased as time between sethoxydim + COC applications, before and after pyridate was applied, increased.

Keywords

Pyridate, O-(6-chloro-3-phenyl-4-pyridazinyl)S-octyl carbonothioatesethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onecabbage, Brassica oleracea L.Application timingpostemergence controlBrassicaceaCOC, crop oil concentrate
Type
Research
Information
Weed Technology , Volume 11 , Issue 1 , March 1997 , pp. 81 - 87
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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