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Interactions of Late-Season Morningglory (Ipomoea spp.) Management Practices in Peanut (Arachis hypogaea)

Published online by Cambridge University Press:  20 January 2017

Sarah H. Lancaster ,
David L. Jordan ,
Alan C. York ,
John W. Wilcut ,
Rick L. Brandenburg  and
David W. Monks
Sarah H. Lancaster
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
David L. Jordan*
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
Alan C. York
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
John W. Wilcut
Affiliation:
Department of Crop Science, North Carolina State University, P.O. Box 7620, Raleigh, NC 27695-7620
Rick L. Brandenburg
Affiliation:
Department of Entomology, North Carolina State University, Box 7613, Raleigh, NC 27695-7613
David W. Monks
Affiliation:
Department of Horticultural Science, North Carolina State University, P.O. Box 7609, Raleigh, NC 27695-7609
*
Corresponding author's E-mail: [email protected]
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Abstract

Experiments were conducted in North Carolina during 2002 and 2003 to evaluate entireleaf morningglory control by 2,4-DB applied alone or with seven fungicides. In a separate group of experiments, tall morningglory control by 2,4-DB was evaluated when applied in four-way mixtures with the following: the fungicides azoxystrobin, chlorothalonil, pyraclostrobin, or tebuconazole; the insecticide lambda-cyhalothrin; and the foliar fertilizer disodium octaborate or the plant growth regulator (PGR) prohexadione calcium plus urea ammonium nitrate. Pyraclostrobin, but not azoxystrobin, boscalid, chlorothalonil, fluazinam, propiconazole plus trifloxystrobin, or tebuconazole, reduced entireleaf morningglory control by 2,4-DB. Mixtures of fungicides, insecticides, and foliar fertilizer/ PGR did not affect tall morningglory control by 2,4-DB. Placing artificial morningglory in the peanut canopy when fungicides were applied did not intercept enough fungicide to increase peanut defoliation by early leaf spot and web blotch or reduce pod yield compared with fungicide applied without artificial morningglory.

Keywords

2,4-DBazoxystrobinboscalidchlorothalonilfluazinamlambda-cyhalothrinprohexadione calciumpropiconazolepyraclostrobintebuconazoletrifloxystrobinentireleaf morningglory, Ipomoea hederacaea var integriuscula Gray # IPOHGtall morningglory, Ipomoea purpurea (L.) Roth # PHBPUearly leaf spot, Cercospora arachidicola S. Horiweb blotch, Phoma arachidicola (Marsas et al.)peanut, Arachis hypogaea L. ‘NC-V 11’, ‘VA 98R’Fungicide depositionpesticide interactionsweed interferencePGR, plant growth regulatorUAN, urea ammonium nitrate
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 4 , December 2005 , pp. 803 - 808
Copyright
Copyright © Weed Science Society of America 

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