Hostname: page-component-848d4c4894-x24gv Total loading time: 0 Render date: 2024-05-09T13:33:52.744Z Has data issue: false hasContentIssue false
  • English
  • Français

Differential Tolerance of Broccoli (Brassica oleracea) Cultivars to Preemergence Application of Oxyfluorfen

Published online by Cambridge University Press:  12 June 2017

Howard F. Harrison Jr.  and
Mark W. Farnham
Howard F. Harrison Jr.
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, U.S. Vegetable Laboratory, Charleston, SC 29407
Mark W. Farnham
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, U.S. Vegetable Laboratory, Charleston, SC 29407
Get access Rights & Permissions [Opens in a new window]

Abstract

The tolerance of 10 broccoli cultivars to preemergence (PRE) applications of oxyfluorfen was evaluated in greenhouse and field experiments. Differences in tolerance among cultivars were expressed as differences in seedling injury ratings and growth and stand reduction. The cultivars ‘Pinnacle’ and ‘Mercedes’ were most tolerant, ‘Embassy’ and ‘Early Dawn’ were least tolerant, and other cultivars were intermediate in tolerance. Broccoli seedling weights and stand counts averaged across 10 cultivars and oxyfluorfen application rates of 0.125, 0.25, and 0.5 kg/ha were 70 and 81% of control, respectively, for the two fall-planted experiments and 39 and 50% of control, respectively, for the spring-planted experiment. Differences in tolerance among cultivars were less distinct in the cooler spring than in the warmer fall season. Oxyfluorfen application that caused stand and early growth reduction did not always affect broccoli head weight or quality or delay harvest.

Keywords

Oxyfluorfen, 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzenebroccoli, (Brassica oleracea L. var. italica)Herbicide tolerancesusceptibilitycole cropsPOST, postemergencePRE, preemergence
Type
Research
Information
Weed Technology , Volume 12 , Issue 1 , March 1998 , pp. 14 - 18
Copyright
Copyright © 1997 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Bhowmik, P. C., and McGlew, E. N. 1986. Effect of oxyfluorfen as a pretransplant treatment on weed control and cabbage yield. J. Am. Soc. Hortic. Sci. 111:686–689.Google Scholar
Cook, W. P., and Ezell, D. O. 1983. Commercial Broccoli Production for South Carolina. Clemson, SC: Clemson University Cooperative Extension Service Leaflet 52.Google Scholar
Farnham, M. W., and Harrison, H. F. Jr., 1995. Response of broccoli (<i>Brassica oleracea</i>) to post-transplant oxyfluorfen. Weed Technol. 9:385–391.CrossRefGoogle Scholar
Gorske, S. F., and Hopen, H. J. 1978. Selectivity of nitrofen and oxyfluorfen between <i>Portulaca oleracea</i> genotypes and two cabbage (<i>Brassica oleracea</i> var. <i>capitata</i>) cultivars. Weed Sci. 26:640–642.Google Scholar
Grabowski, J. M., and Hopen, H. J. 1984. Evaluation of oxyfluorfen formulations for cabbage weed control. J. Am. Soc. Hortic. Sci. 109:539–543.CrossRefGoogle Scholar
Herbst, K. A., and Derr, J. F. 1990a. Effects of oxyfluorfen, pyridate and BAS 514 applied postemeregence on direct-seeded broccoli (<i>Brassica oleracea</i> var. <i>botrytis</i>). Weed Technol. 4:71–75.Google Scholar
Herbst, K. A., and Derr, J. F. 1990b. Direct-seeded broccoli (<i>Brassica oleracea</i> var. <i>botrytis</i>) response to oxyfluorfen and BAS 514 applied preemergence. Weed Technol. 4:356–359.Google Scholar
Johnson, D. H., McCarty, J. T., Carey, V. F. and Talbert, R. E. 1992. Broccoli, cabbage, and cauliflower herbicides evaluated. Arkansas Farm Res. 41: 12–13.Google Scholar