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Comparison Of Mosquito Abundance, Distribution, And Parity Between A High And A Low Prevalence Site For La Crosse Encephalitis In Eastern Tennessee, Sabra Lee Scheffel
Comparison Of Mosquito Abundance, Distribution, And Parity Between A High And A Low Prevalence Site For La Crosse Encephalitis In Eastern Tennessee, Sabra Lee Scheffel
Masters Theses
A three-year investigation of the seasonal distribution, abundance and diversity of mosquitoes at a high and a low prevalence area for La Crosse (LAC) encephalitis was conducted in eastern Tennessee, USA. We identified a high LAC prevalence site (Knox County) from which two cases of LAC encephalitis were confirmed, one in 1997 and the other in 2000, and an ecologically similar low prevalence site (Blount County) with no confirmed LAC cases. Mosquitoes were collected at each site using 2 Center for Disease Control (CDC) miniature light traps baited with carbon dioxide, 1 Omni-directional Fay trap baited with carbon dioxide, 2 …
Biological Control Methods For Damping-Off Of Tomato Seedlings Caused By Pythium Myriotylum, Miranda Marshall Clark
Biological Control Methods For Damping-Off Of Tomato Seedlings Caused By Pythium Myriotylum, Miranda Marshall Clark
Masters Theses
Pythium damping-off has the potential to cause severe loss in greenhouse and field grown tomatoes. Species of Pythium are found in soils from all climates, and capable of surviving for long periods without a host. Infectious structures of Pythium species are motile, and therefore able to travel through irrigation water and runoff. Pythium myriotylum thrives in warm, humid environments such as that of the Southeastern United States, and was thus chosen for this study. Currently, no tomato varieties with resistance to damping-off are available. In addition, the agriculture industry is striving for sustainable and biological methods of control of plant …
Genetic Diversity Of Sclerotinia Homoeocarpa Delineated By Aflp And Vegetative Compatibility, Renae Erin Devries
Genetic Diversity Of Sclerotinia Homoeocarpa Delineated By Aflp And Vegetative Compatibility, Renae Erin Devries
Masters Theses
Sclerotinia homoeocarpa F.T. Bennett is the causal agent of dollar spot disease that infects turfgrasses of golf courses in Tennessee as well as around the world. Dollar spot taints the uniformity and aesthetic value of putting greens, therefore causing a serious problem on golf courses. Isolates were collected from across Tennessee and northern Mississippi and tested for fungicide resistance by Pamela Baird. Genetic diversity between the isolates was investigated by vegetative compatibility, conserved gene sequences, and AFLP (amplified fragment length polymorphism) to reveal associations with fungicide resistance. Vegetative compatibility tests were completed by pairing six tester strains with Tennessee and …