%0 Journal Article
%T Control of volunteer adzuki bean in soybean
%A Christopher Kramer
%A Nader Soltani
%A Darren E. Robinson
%A Clarence J. Swanton
%A Peter H. Sikkema
%J Agricultural Sciences
%P 501-509
%@ 2156-8561
%D 2012
%I Scientific Research Publishing
%R 10.4236/as.2012.34059
%X The objective of this research was to evaluate the efficacy of various pre-emergence (PRE) and post-emergence (POST) herbicides for the control of volunteer adzuki bean (<i>Vigna angularis</i> (Willd.) Ohwi &amp; Ohashi) in soybean (<i>Glycine max</i> L.). Trials were conducted at two locations in 2005, 2006, 2007, and 2009. Experiments were arranged in a randomized complete block design with either five PRE or nine POST herbicides. Volunteer adzuki bean interference in soybean resulted in yield loss of up to 25%. Cloransulam-methyl, linuron, metribuzin, flumetsulam, and imazethapyr applied PRE provided up to 6, 24, 14, 8, and 0% control, respectively at 8 weeks after emergence (WAE), while acifluorfen, fomesafen, bentazon, thifensulfuron-methyl, cloransulam-methyl, imazethapyr, and imazethapyr plus bentazon applied POST provided 2, 2, 5, 34, 6, 4, and 12% control, respectively at 8 weeks after application (WAA). Generally, with the aforementioned herbicides, soybean yield was equivalent to the weedy control and soybean grain contamination with adzuki bean seed was consistently above the 1% maximum threshold. Chlorimuron-ethyl and glyphosate applied POST provided up to 84 and 94% visual control at 8 WAA, respectively, decreased adzuki bean density, biomass, and seed production, and generally decreased soybean contamination with adzuki bean below the 1% threshold. The only herbicides evaluated in this study that controlled volunteer adzuki bean in soybean were chlorimuron-ethyl (9 g ai.ha<sup>-1</sup>) and glyphosate (900 g ai.ha<sup>-1</sup>) applied POST. All the other PRE and POST herbicides evaluated did not provide adequate control of volunteer adzuki bean in soybean.
%K Acifluorfen
%K Bentazon
%K Chlorimuron-Ethyl
%K Cloransulam-Methyl
%K Flumetsulam
%K Fomesafen
%K Imazethapyr
%K Linuron
%K Metribuzin
%K Pre-Emergence
%K Post-Emergence
%K Thifensulfuron-Methyl
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=20162