Range Research
Reducing Bitterweed Toxicosis
Bitterweed (Hymenoxys odorata) is a toxic annual forb found mainly in the western Edwards Plateau that causes severe losses in sheep production each year. We are currently working on management solutions to avoid toxicosis such as feeding compounds in supplements to bind the toxins in bitterweed and selection of replacement animals that are resistant to bitterweed toxicosis.
Publications
Frost, R.A., C.S. Scott, J.W. Walker, and F.S. Hartmann. 2003. Effects of origin, genetics, and experiences early in life on bitterweed consumption by sheep. Appl. Anim. Behav. Sci. (accepted). Request a reprint
Poage, G.W. III, C.B. Scott, M.G. Bisson, F.S. Hartmann. 2000. Activated charcoal reduces bitterweed toxicosis in sheep. J. Range Manage. 53:73-78.
Reducing Mesquite Cover
Mesquite remains the largest brush problem in Texas. At Angelo State University, we are conducting several studies to better understand the most efficient and cost effective methods of controlling mesquite cover. These studies involve several different approaches, including hand-spraying mesquite and manipulating seed dispersal by livestock and wildlife.