Theses and Dissertations

Robin C. Bond

Issuing Body

Mississippi State University

Advisor

Poston, Daniel

Committee Member

Nandula, Vijay

Committee Member

Koger, CLifford

Committee Member

Martin, Steve

Date of Degree

8-7-2010

Document Type

Graduate Thesis - Open Access

Major

Weed Science

Degree Name

Master of Science

College

College of Agriculture and Life Sciences

Department

Department of Plant and Soil Sciences

Abstract

Glyphosate-resistant (GR) Italian ryegrass has been documented in many different countries around the world and has now become a major problem in row crop production areas of Mississippi. Field experiments were conducted from 2006 to 2008 in the Mississippi Delta to evaluate various herbicide and tillage treatment programs for its control. style='mso-spacerun:yes'> Highest level of control and reduction of GR Italian ryegrass biomass was observed with mechanically incorporated as well as surface applied residual herbicides in the fall of the year. style='mso-spacerun:yes'> Control of GR Italian ryegrass was 86-95% with surface applications of clomazone at 0.56, 0.84, and 1.12 kg ai/ha, s-metolachlor at 1.79 kg class=SpellE>ai/ha and KIH-485 at 0.16 kg ai/ha 171 days after emergence. Using a systems approach, preplant incorporated (PPI) class=SpellE>clomazone and/or s- class=SpellE>metolachlor followed by preemergence (PRE) application of paraquat + linuron+ non-ionic surfactant was also found to control and reduce biomass of GR Italian ryegrass.

URI

https://hdl.handle.net/11668/15442

Comments

Lolium perenne||glyphosate-resistantce||glyphosate||Italian ryegrass

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