Sudangrass (Sorghum bicolor L. Moench) was introduced into Texas in the early 1900s and soon became established as an important pasture crop.
After its introduction, many improved varieties were developed. They have greater disease resistance, sweeter stems, less toxic chemical content, and more leaves than previous varieties. This is the...
Fishers (Pekania pennanti) are medium sized mustelids endemic to North America. Two fisher populations persist in Oregon: an indigenous population in southwestern Oregon, and a reintroduced population in the southern Cascade Mountains. Despite candidacy for listing under the Endangered Species Act, current information on fisher populations in Oregon is scarce....
Grape powdery mildew (GPM, causal agent Erysiphe necator) is the most economically important disease of grapevine in the Western U.S. Low levels of GPM infection on clusters (1-5%) can negatively affect wine sensory quality, so intensive fungicide programs are common. This may lead to problems like excessive fungicide use and...
Sixty-two isolates of Pseudomonas, principally from fruit trees,
were compared on the basis of LOPAT characteristics, pathogenicity,
and protein band pattern produced by gel electrophoresis of soluble
proteins. All but one of the oxidase negative isolates fell into
LOPAT group Ia. The oxidase positive isolates were placed into groups
IVa,...
Sorghums (Sorghum bicolor) are warm-season grasses native to Africa. They were introduced into the United States in the 17th century. They are grown primarily under dryland conditions or with limited irrigation in the semiarid
southwest and the Great Plains. Grain sorghums generally are cultivated in areas that are too hot...
The Endangered Species Act of 1973 (ESA) is considered by many to be among the most powerful and most contentious environmental laws in the United States. Persistent challenges to the Act’s implementation make reaching conservation goals problematic. Most notably, the very nature of the law—providing protections for species already at...
Cytokinins are a group of plant hormones mediating cell division and
differentiation. Zeatin is a naturally occurring and highly active cytokinin that is rapidly
metabolized in Phaseolus seeds. The metabolites and enzymes mediating the conversion
have been studied extensively. Zeatin metabolic enzymes may be utilized in studying the
regulation of...
The spread of invasive species into the Pacific Northwest (PNW) of the United States poses a serious threat to the valuable forest resources of the region. Many insects and diseases that are a threat to these forest resources can be transported inside firewood. When campers transport their firewood across borders...
Per- and polyfluoroalkyl substances (PFASs) have emerged in the last half century as concerning global contaminants. PFASs have been found in drinking water systems causing negative health impacts for those who rely on this as their primary source of drinking water. PFASs are man-made industrial chemicals composed of carbon chains...
The management of the Northern Rocky Mountains (NRM) gray wolf population is a longstanding controversy that has fueled generations of political and cultural turmoil in the American West. At the end of the 19th century and beginning of the 20th century, wolves were eradicated from the West for the threat...