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Stale seedbed weed control in cucumber

Published online by Cambridge University Press:  12 June 2017

W. Carroll Johnson III  and
Benjamin G. Mullinix Jr.
Benjamin G. Mullinix Jr.
Affiliation:
Coastal Plain Experiment Station, Tifton, GA 31793-0748
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Abstract

Field studies were conducted from 1995 to 1997 near Tifton, GA, to determine the benefits of stale seedbed weed control in cucumber. Three stale seedbed management systems—(1) power till stale seedbeds twice (2 ×), (2) glyphosate application immediately after planting, and (3) combination system of stale seedbeds power tilled once 2 wk prior to planting followed by glyphosate application immediately after planting cucumber—were evaluated as main plots. Subplots were weed management systems after planting cucumber: intensive, basic, and cultivation alone. Weed densities were generally greater in 1996 and 1997 than in 1995. Yellow nutsedge was the overall predominant species in 1995 (46 plants m−2), with Florida pusley being the predominant species in 1996 and 1997, at 80 and 124 plants m−2, respectively. Generally, stale seedbeds shallow tilled 2 × had fewer weeds and greater cucumber yields than stale seedbeds treated with glyphosate. Glyphosate did not adequately control emerged Florida pusley on stale seedbeds, resulting in reduced cucumber yield. Clomazone preemergence and bentazon/halosulfuron postemergence were used for broadleaf weed control in the intensive weed management system. These herbicides injured cucumber plants, delayed maturity, and reduced yield. Based on our results, stale seedbeds shallow tilled 2 × can be integrated into cucumber production and provide effective cultural weed control. Furthermore, these systems will replace the need for potentially injurious herbicides.

Keywords

BentazonclomazoneethalfluralinglyphosatehalosulfuronFlorida pusley, Richardia scabra L. RCHSCsmallflower morningglory, Jacquemontia tamnifolia (L.) Griseb. IAQTAyellow nutsedgeCyperus esculentus L. CYPEScucumber, Cucumis sativus L.Cultural weed controlintegrated weed managementRCHSCIAQTACYPES
Type
Weed Management
Information
Weed Science , Volume 46 , Issue 6 , December 1998 , pp. 698 - 702
Copyright
Copyright © 1998 by the Weed Science Society of America 

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