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Assessing Soil Microbial Populations and Activity Following the Use of Microbial Inoculants: Effects on Disease Suppressiveness and Soil Health
(2008-09-09)
In recent years, assessing use of microbial inoculants for promotion of plant growth has increased. Optimizing application frequency of PGPR is critical to achieving the maximum benefit from this technology. The study ...
Studies on Cercospora Leaf Spot
(2008-09-09)
Fresh Pseudocercospora cornicola specimens were compared to an isotype specimen to confirm species identity. The two specimens proved to be the same taxonomic entity. The fungus was then redescribed and illustrated from ...
Production and characterization of Bt Cry1Ac resistance in bollworm, Helicoverpa zea (Boddie)
(2009-02-23)
Laboratory-selected Bt-resistant colonies are important tools for elucidating Bt resistance mechanisms and helping to determine appropriate resistance management strategies for Bt crops. Here, two laboratory populations ...
The Ants (Hymenoptera: Formicidae) of Alabama
(2008-09-09)
This thesis presents the first statewide survey of the ant fauna of Alabama in over seventy years. Since the first state survey by L.C. Murphree (in the 1930’s) to present, 154 species have been reported. Fifty-nine of the ...
Recruitment to and Defense of Aphids by Fire Ants and Native Ants and an Estimate of Their Trophic Positions Using Stable Isotopes
(2009-02-23)
The red imported fire ant, Solenopsis invicta, is an invasive ant known to form facultative mutualisms with aphids. Fire ants significantly reduce the abundance of aphid predators and herbivores on plants infested with ...
Molecular Mechanisms of Cytochrome P450 Monooxygenase-Mediated Pyrethroid Resistance in the House Fly, Musca domestica (L.)
(2009-02-23)
A wild-type pyrethroid resistant house fly strain, ALHF, was collected from a poultry farm in Alabama after control failure with permethrin (a pyrethroid insecticide). It was further selected with permethrin for 6 generations ...
Molecular Mechanisms of Pyrethroid Resistance in the Mosquito, Culex quinquefasciatus (Say)
(2009-02-23)
Mosquitoes have been the ideal transmitters of a wide variety of disease agents due to their repeated blood feedings over their life span. Culex quinquefasciatus (Say) is an important disease vector in the Southeastern ...
Mutualisms, Commensalisms, and Predation: The Direct and Indirect Effects of Fire Ants on Arthropods and Plants
(2009-02-23)
The red imported fire ant, Solenopsis invicta, is a voracious generalist predator that has dramatically affected the native arthropod community since its introduction approximately 75 years ago. Most research suggests S. ...
Developing Alternatives to Methyl Bromide: A Focus on Acrolein (2-Propenal)
(2008-09-09)
Methyl bromide, a soil fumigant with biocidal action, is used in agriculture to control weeds, fungi, bacteria, nematodes, and arthropods. Due to methyl bromide’s active role in atmospheric ozone depletion, its usage will ...
Studies on the Biology and Host Location Behavior of Pteromalus cerealellae (Ashmead) (Hymenoptera: Pteromalidae), A Parasitoid of Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae)
(2008-09-09)
Pteromalus cerealellae is an ectoparasitoid of several pests of stored products. Information on several aspects of its biology and life history strategy is grossly lacking. My dissertation focuses on some aspects of the ...