Life Sciences Commons^™

Evaluation Of Sethoxydim & Mbr 22359 For Control Of Rhizome Johnsongrass (Sorghum Halepense) In Soybeans (Glycine Max), E. Craig Musselman

Masters Theses & Specialist Projects

Johnsongrass (Sorghum halepense) is one of the most troublesome weeds in the southeastern United States. -everal herbicides have been developed to combat johnsongrass, and many new experimental herbicides with high johnsongrass control potential are presently being tested. Two of these new experimental herbicides for johnsongrass control in soybeans (Glycine max) are sethoxydim and MBR 22359.

Field experiments were conducted in 1981 and 1982 to evaluate the effectiveness of MBR 22359 preemergence and postemergence, sethoxydim in single and split applications, trifluralin in combination with mefluidide, or with glyphosate or sethoxydim in the wick, and alachior in combination …

The Effects Of Photoperiod-Temperature Interactions On Testicular Regression In The Green Anole, Anolis Carolinensis, Teri Wickelhaus

Masters Theses & Specialist Projects

Interrupted-night photoperiod experiments were carried out in green anoles (Anolis carolinensis) in July and August 1981 in order to explore the possibility that seasonal timing of testicular regression regulated by day length involves circadian rhythms. The influence that temperature has on testicular responsiveness to light was also assessed. Testicular weight responses to different interrupted-night photoperiod treatments were similar in anoles kept at constant warm temperatures but varied in anoles kept at constant cold temperatures. Rates of decline of spermatogenesis in response to different interrupted-night photoperiod treatments were, on the other hand, similar in anoles kept at constant cold …

Kentucky Warbler (Vol. 58, No. 4), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.

Ua66/5 News From Western, Wku Agriculture

WKU Archives Records

Newsletter created by the WKU Agriculture Department re: winter alumni meeting, death of William Stroube and department head search.

Kentucky Warbler (Vol. 58, No. 3), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.

The Influence Of Livestock Feed Size On Feed Consumption By Starlings (Sturnus Vulgaris), Daniel Twedt

Masters Theses & Specialist Projects

Ground meal and 4 sizes of pelleted feeds (3/16, ¼, 3/8 and ½ inch diameters) were offered to captive Starlings (Sturnus vulgaris, Linnaeus) to determine the minimum feed size they were unable to consume in significant amounts. The ground meal, 3/8 and ½ inch diameter pellets substantially decreased feed consumption compared with 3/16 and ¼ inch diameter pellets. Additionally, ½ inch pellets were consumed substantially less than ground meal or 3/8 inch pellets. Supplemental feed was require to prevent mortality among Starlings offered only ½ inch pellets.

Two pellet sizes, the 3/16 inch pellet which was readily consumed by …

Kentucky Warbler (Vol. 58, No. 2), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.

A Mammalian Virus (Sv40) Inductest For Putative Carcinogens, Howard Blount

Masters Theses & Specialist Projects

The in vitro mammalian virus inductest is based on the measurement of induced viral gene expression from Simian virus 40 (SV40) transformed weanling Syrian hamster kidney cells (clone E). Upon challenge by many DNA-damaging chemical agents, infectious virions were produced which were quantitated by assay on a cell line permissive to SV40, such as the highly contact inhibited African green monkey kidney cells, CV-1P. Some known carcinogens and non-carcinogens were tested in this research including mitomycin C, aflatoxins Bl and Gl, sterigmatocystin and several polycyclic hydrocarbons.

Lysolecithin (a membrane permeabilizing agent) and S9 mix (a pre -metabolizing mixture) were used …

Ua66/6/2 Alumni Newsletter, Wku Biology

WKU Archives Records

Newsletter created by and about the WKU Biology department highlighting students, faculty and alumni activities.

Ultrastructural Investigations On Spore Germination In The Fern Woodwardia Virginica (L.) Smith, James Mccurry

Masters Theses & Specialist Projects

This investigation represents the first electron microscopic study of spore germination in the fern Woodwardia virginica (L.) Smith. Samples of fern spores were induced into synchronous division by a dark, red light and white light sequence and examined for the early events of germination. During early germination the nucleus, which was located in a central position, assumed a pointed trailing end and a broadened amoeboid proximal face while migrating to a proximal position in the spore. At this time the nucleus became spherical, and chromosomes began to condense even before the disruption of the nuclear envelope. Chloroplastid and mitochondrial structure …

Comparison Of Grouping Methods For Beta-Hemolytic Streptococci, Renee Smith

Masters Theses & Specialist Projects

A total of 198 strains of beta-hemolytic streptococci were Lancefield grouped by the conventional nonserological method and the Phadebact Co-agglutination method. These two methods were then compared to the Lancefield precipitin test. The Phadebact Co-agglutination method and the non - serological method '.ere evaluated as to their sensitivity, accuracy, and suitability as methods for serogrouping betahemolytic streptococci in clinical laboratories. Due to the difference in their grouping ability only Lancefield Groups A and B could be directly compared. There was a 100 percent agreement between both of these methods for the Lancefield grouns A and B, and there were three …

Sunset As An Orientational Cue For A Nocturnal Migrant, The White-Throated Sparrow (Zonotrichia Albicollis), James Pauly

Masters Theses & Specialist Projects

The possibility that nocturnal migrants use sunset as an orientational cue was explored in the White-throated Sparrow (Zonotrichia albicollis) between 1 April and 24 April, 1981. Orientation tests were run on the roof of the biology building at Western Kentucky University when birds were assumed to be in the proper physiological condition for migration. Birds exposed to only nighttime skies, birds isolated from all visual cues, and birds exposed to both daytime and nighttime skies did not exhibit the northward directional preference appropriate for the season tested. However, White-throated Sparrows exposed only to sunset and tested in the absence …

Kentucky Warbler (Vol. 58, No. 1), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.