​​Lygus Management in Texas High Plains Cotton

August 2015 | 24 min., 06 sec.
by Megha N. Parajulee
Texas A&M AgriLife Extension

Summary

Western tarnished plant bug, Lygus hesperus, is the primary Lygus species inhabiting cotton and several other crop hosts in the Texas High Plains region. In Texas High Plains cotton, lygus bugs are generally more pestiferous in the boll development stage than in the early squaring stage. Until cotton begins flowering, Lygus prefers to stay in various roadside weed hosts, including mustard, alfalfa, Russian thistle, sunflower, pigweed, and others. As roadside weeds senesce and cotton begins flowering, cotton vulnerability to Lygus infestations increase. Lygus injury to maturing bolls is generally the highest during mid-season (4-5 weeks into flowering). In the Texas High Plains, Lygus can be managed using comprehensive ecologically-based IPM practices, with a focus on non-cotton habitat management. This presentation will help consultants, growers, IPM Agents, and other practitioners in the Texas High Plains to understand more about the Lygus host utilization behavior and sink-source relationships of non-cotton host habitats, influencing Lygus movement into cotton, and action thresholds and insecticide chemistries.​

About the Presenter

Megha N. ParajuleeMegha N. Parajulee earned his MS (1991) and PhD (1994) degrees in entomology from University of Wisconsin-Madison and joined the Texas A&M University in 1994. He is currently a professor and Cotton Entomology Project Leader at Texas A&M Research and Extension Center in Lubbock, Texas. His research focuses on developing ecologically intensive arthropod management in Texas cotton. Dr. Parajulee is a leader in cotton entomology research, teaching, and service, with an exemplary record of scientific research, publication, and delivery of pest management technologies to the producer clientele of Texas and beyond. He has authored/co-authored 90 refereed and over 300 non-refereed publications, organized several international invited symposia, and has presented 125 invited and 235 submitted papers. He is active internationally with plenary/keynote/special speaking role in Egypt, China, India, Colombia, Nepal, Uzbekistan, United Kingdom, USA, Canada, Mexico, South Korea, South Africa, Australia, Germany, and Ghana. He received the Texas A&M Vice Chancellor’s Award in Research Excellence (2008), Faculty Fellow Award (2009), and Regents Fellow Award (2010). He is active in ESA and other professional societies for the last 25 years, including ESA Program Committee Co-Chair (2010), Chair of the ESA Standing Committee on International Affairs (2008), President of the Society of Southwestern Entomologists (2009), and International IPM Symposium Program Co-Chair (2012). He was also a Fulbright Senior Fellow in Nepal and Uzbekistan (2014).​​

Contact Information:
Email: m-parajulee@tamu.edu

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