Dr. Don L. Renchie
A 5th generation native of Bryan, Texas, Dr. Don Renchie grew up in the Brazos County 4-H programs. He holds a BS in Animal Science from Prairie View A&M University and a MS and Ph.D. in Ag. Ed. from Texas A&M University. Don worked in the agricultural chemical supply industry and for the Texas Department of Agriculture.
Since 1993, Don has been a member of the Texas Agricultural and Environmental Safety Unit. He is the Program Leader of the Agricultural and Environmental Safety Unit, an Extension Specialist and Coordinator for the Pesticide Safety Education Training Program.
Dr. Mary Ketchersid
Mary Ketchersid received her B.S. in Biology with a Chemistry minor from the University of Texas-Arlington in 1968. She received both her M.S. and Ph.D. in Agronomy-Weed Science from Texas A&M University in August 1976 and May 1990, respectively. She began working at Texas A&M University in September of 1965. She worked in the Range Science Department from 1965 to 1966 and then moved to the Soil and Crop Science Department in 1967 where she remained until July of 1997. She conducted weed science research involving herbicide residue analysis and herbicide mode of action and taught a number of courses and labs in the Department.
Dr. Ketchersid joined the Agricultural & Environmental Safety Unit in July of 1997 and currently works in the Pesticide Safety Education Program (PSEP). She is responsible for Worker Protection Safety, Right-to-Know, Endangered Species, and Weed Science issues. Mary also provides weed identification for extension specialists, county agents, and producers. Mary has been licensed as a private pesticide applicator and non-commercial pesticide applicator since the programs inception..
Dr. Mark Matocha
Dr. Mark Matocha has been with the Agricultural and Environmental Safety Unit since 2001. He holds a Ph.D. from Texas A&M in Agronomy, specializing in weed science. He has more than 10 years experience in the pest management field specializing in herbicides and weed control. He has conducted weed control research in turfgrass, pasture, peanut, corn, sorghum, cotton, vegetables, citrus, and sugarcane. He has authored several Extension publications and conducts educational meetings dealing with pesticide safety and education, agronomy, and weed control.
Mark also serves as the IR-4 Liaison for Texas - coordinating a multi-state minor use pesticide advisory committee which is responsible for identifying and prioritizing minor use pesticide needs for Texas and surrounding states. Mark has been a licensed Texas Department of Agriculture Non-Commercial Pesticide Applicator since 1997.
Dr. Grady J. Glenn
Dr. Grady Glenn has over 30 years experience in urban entomology, in both industry and academic pursuits. He has conducted research and taught at the Center for Urban & Structural Entomology at Texas A&M University. His duties include writing, revising, and updating Texas AgriLife Extension Service publications as well as presentations, teaching, and continuing education training pertaining to urban entomology, pest management, and category training.
Grady is a Board Certified Entomologist in Urban Entomology, through the Entomological Society of America, with experience in insect systematics and identification, insecticide chemistry and toxicology, and IPM in Schools. Other experience includes pest management, with licensing in Pest, Termite, Lawn & Ornamental, Weed, Structural Fumigation, and Commodity Fumigation categories, Reduced Impact Service, and ISPM 15 7 CFR 319.
Dr. Mark M. Johnsen
Dr. Mark M. Johnsen was born and raised in El Paso, Texas. Mark received his Ph.D. in medical entomology specializing in mosquitoes and their impact on human health while serving as the research technician for the Mosquito Research Laboratory and conducting research on novel chemicals for mosquito control and insecticide resistance under the direction of Dr. Jimmy K. Olson.
Mark joined the Agricultural and Environmental Safety Unit June of 2007 where his duties include conducting research on medically important arthropods, conducting disease surveillance for Brazos County, developing and implementing a statewide insecticide resistance monitoring program, and provide education and training on mosquito identification, surveillance, and vector control practices.