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1 January 2005 Broadleaf signalgrass (Brachiaria platyphylla) interference in corn
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Abstract

Field research was conducted in Tennessee at two locations over 3 yr under no-tillage conditions to examine the interaction of broadleaf signalgrass and corn yield. Broadleaf signalgrass was killed at various time intervals during the growing season by applying postemergent glyphosate. Corn injury was avoided by the use of a glyphosate-tolerant variety. Yield reductions because of broadleaf signalgrass interference occurred with weed densities > 150 plants m−2 and when the corn and weeds emerged simultaneously. Corn had the ability to withstand broadleaf signalgrass presence up to 28 d after planting with no yield loss at all locations.

Nomenclature: Glyphosate; broadleaf signalgrass, Brachiaria platyphylla (Griseb.) Nash BRAPP; corn, Zea mays.

Jason L. Alford, Robert M. Hayes, G. Neil Rhodes, Lawrence E. Steckel, and Thomas C. Mueller "Broadleaf signalgrass (Brachiaria platyphylla) interference in corn," Weed Science 53(1), 97-100, (1 January 2005). https://doi.org/10.1614/WS-04-092R
Received: 10 May 2004; Accepted: 1 September 2004; Published: 1 January 2005
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