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Effect of Temperature and Cultivar on the Response of Broccoli and Collard (Brassica oleracea) to Oxyfluorfen

Published online by Cambridge University Press:  12 June 2017

Howard F. Harrison  and
Joseph K. Peterson
Howard F. Harrison*
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, U.S. Vegetable Laboratory, Charleston, SC 29414
Joseph K. Peterson
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, U.S. Vegetable Laboratory, Charleston, SC 29414
*
Corresponding author's E-mail: [email protected].
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Abstract

Growth chamber studies were conducted to investigate the effect of temperature, cultivar, and leaf wax content on the response of broccoli and collard to oxyfluorfen. Broccoli cultivars grown under cool temperatures (15/10 C) were more susceptible to preemergence (PRE) application of oxyfluorfen, and broccoli and collard cultivars grown at cool temperatures were more susceptible to postemergence (POST) application of oxyfluorfen than cultivars grown under warm temperatures (25/20 C). Differences between the tolerant cultivar ‘Pinnacle’ and the susceptible cultivar ‘Packman’ in response to PRE oxyfluorfen application were more distinct at warm temperatures than at cool temperatures. Although the broccoli and collard cultivars used in the POST study varied in leaf wax content, differences in wax content did not appear to be as important as other genetic factors in the differential response to POST oxyfluorfen application between cultivars.

Keywords

Oxyfluorfen, 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzenebroccoli, Brassica oleracea L. var. italicacollard, Brassica oleracea var. acephalaHerbicide tolerancePOST, postemergence or posttransplantingPRE, preemergence
Type
Research
Information
Weed Technology , Volume 13 , Issue 4 , December 1999 , pp. 726 - 730
Copyright
Copyright © 1999 by the Weed Science Society of America 

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References

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