%0 Journal Article
%T Red Rice Control and Soybean Tolerance to <i>S</i>-Metolachlor in Association with Glyphosate
%A Carla Rejane Zemolin
%A Luis Antonio de Avila
%A Dirceu Agostinetto
%A Guilherme Vestena Cassol
%A Marlon Bastiani
%A Rodrigo Pestana
%J American Journal of Plant Sciences
%P 2040-2047
%@ 2158-2750
%D 2014
%I Scientific Research Publishing
%R 10.4236/ajps.2014.513219
%X <p style=\"text-align:justify;\">
	<span style=\"font-size:10.0pt;font-family:;\" \"=\"\"><span style=\"font-family:Verdana;\">Red rice is one of
the major troublesome and difficult weeds to control in rice production
regions. The introduction of the Clearfield</span><sup><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana, Helvetica, Arial;white-space:normal;background-color:#FFFFFF;\"><span style=\"font-family:Verdana, Helvetica, Arial;white-space:normal;background-color:#FFFFFF;\">&amp;#174</span></span></span></sup><span style=\"font-family:Verdana;\"> technology allowed
producers to control red rice using rice genotypes tolerant to the
imidazolinone herbicides. However, because the consecutive use of this
technology red rice biotypes have evolved resistance to imidazolinone
herbicides, the rice-soybean rotation has been an alternative used by
producers to control this weed. This system allows the use of herbicides with
different modes of action to control red rice, such as </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor. </span><span><span style=\"font-family:Verdana;\">Thus, greenhouse
and field experiments were carried out during the 2011 to 2012 and 2012 to 2013
growing seasons to evaluate: 1) sensitivity of imidazolinone-resistant red rice
to </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor; 2) red rice control
and soybean tolerance in response to associations of </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor and glyphosate. In greenhouse, </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor effectively controlled both susceptible and
imidazolinone-resistant red rice in preemergence. In field, preemergence
applications of </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor
provided greater red rice control in comparison to </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor alone in early postemergence. The association of </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor with glyphosate did not
improve red rice control in preemergence application. However, association of </span><i><span style=\"font-family:Verdana;\">S</span></i><span style=\"font-family:Verdana;\">-metolachlor with glyphosate
significantly improved red
%K Crop Rotation
%K Weed Control
%K Crop Injury
%K Application Timing
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=47338