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Effect of Oxyfluorfen, Pyridate, and BAS 514 Applied Postemergence on Direct-seeded Broccoli (Brassica oleracea var. botrytis)

Published online by Cambridge University Press:  12 June 2017

Kathleen A. Herbst  and
Jeffrey F. Derr
Kathleen A. Herbst
Affiliation:
Dep. Plant Pathol., Physiol. & Weed Sci., Va. Polytech. Inst. & State Univ., Blacksburg, VA 24061
Jeffrey F. Derr
Affiliation:
Dep. Plant Pathol., Physiol. & Weed Sci., Va. Polytech. Inst. & State Univ., Blacksburg, VA 24061
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Abstract

Broccoli treated with 0.07 kg ai/ha oxyfluorfen, 0.28 and 0.56 kg ai/ha pyridate, and 0.14 kg ai/ha BAS 514 at four field locations produced yields similar to the cultivated check. Oxyfluorfen at 0.14 and 0.28 kg/ha, pyridate at 1.0 and 2.0 kg/ha, and BAS 514 at 0.28 and 0.56 kg/ha reduced broccoli yield at one or more locations. Broccoli treated with BAS 514 plus the experimental adjuvant BAS 090 had increased injury and decreased yield when compared to BAS 514 applied alone. Little to no stand reduction was observed with any herbicide treatment. Direct-seeded broccoli is marginally tolerant to rates of oxyfluorfen, pyridate, and BAS 514 that control broadleaf weeds acceptably.

Keywords

BAS 514 (proposed common name quinclorac), 3,7-dichloro-8-quinolinecarboxylic acidoxyfluorfen, 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzenepyridate, O-6-chloro-3-phenyl-4-pyridazinyl)-S-octyl carbonothioatebroccoli, Brassica oleracea L. var. botrytisBAS 090cole crops
Type
Research
Information
Weed Technology , Volume 4 , Issue 1 , March 1990 , pp. 71 - 75
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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