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Direct-Seeded Broccoli (Brassica oleracea var. botrytis) Response to Oxyfluorfen and BAS 514 Applied Preemergence

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

Oxyfluorfen applied preemergence at 0.14, 0.28, and 0.56 kg ai/ha reduced stand of direct-seeded broccoli 40 to 99%, while BAS 514 applied at the same rates did not reduce stand. Broccoli plants that survived oxyfluorfen exhibited 32 to 97% injury 6 to 9 weeks after treatment. BAS 514 at 0.14, 0.28, and 0.56 kg ai/ha caused 6 to 35% crop injury. Oxyfluorfen at 0.28 and 0.56 kg/ha reduced yield compared to the cultivated check at all locations. At one location, all rates of BAS 514 reduced broccoli yield compared to the cultivated check. The two low rates of oxyfluorfen and the two high rates of BAS 514 delayed crop maturity approximately 1 week at one location.

Keywords

BAS 514 (proposed common name quinclorac), 3,7-dichloro-8-quinolinecarboxylic acidoxyfluorfen, 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzenebroccoli, [Brassica oleracea (L.) var. botrytis]Cole cropsquinclorac
Type
Research
Information
Weed Technology , Volume 4 , Issue 2 , June 1990 , pp. 356 - 359
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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