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Survey Of Native Predatory Hemipterans And Assessment Of Nabis Americoferus Carayon (Hemiptera: Nabidae) As A Biological Control Agent Of Lepidopteran Tomato Pests, Andrew Laflair

Electronic Theses and Dissertations

Invasive species have become a grave threat to the economic viability of our global vegetable producers. Tomato pinworm Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) has expanded from its range originating from Peru to being established in nearly hundreds of countries, causing tomato production losses of up to 100% on occasion; however, it has not yet been found in Canada or the USA. Southwestern Ontario is a significant tomato producer making it a high risk from this invasive species. Efficient integrated control methods such as native biological control agents (BCAs) that avoid creating insecticide resistance are ideal. Surveys of Southwestern Ontario conservation …

Incorporation Of Summer Annual Mixtures Into Grazing Systems In Kentucky, Kelly Marie Mercier

Theses and Dissertations--Plant and Soil Sciences

Utilizing summer annual grass-legume forage mixtures has the potential to improve forage yield and nutritive characteristics, and/or animal performance during times when cool-season pasture growth is limited by high temperatures. Legumes can utilize atmospheric nitrogen, which can increase crude protein and forage digestibility in mixtures. As nitrogen application generally improves both the yield and nutritive characteristics of summer annual forages, but can have a negative effect on legume competitiveness, nitrogen fertilizer recommendations for legume-containing summer annual mixtures are not well established.

Two experiments were conducted to determine the feasibility of utilizing summer annual mixtures in Kentucky, USA. The first experiment …

Conceptualizing And Measuring Food Security Among Resettled Refugees Living In The United States, Hannah Stokes

Graduate College Dissertations and Theses

Food security research with resettled refugees in the United States and other Global North countries has found alarmingly high rates of food insecurity, up to 85% of surveyed households. This is well above the current US average of 12.7%. However, the most common survey tool used to measure food security status in the US, the US Household Food Security Survey Module (HFSSM), has not been sufficiently validated for resettled refugee populations, leading to the risk that the HFSSM may actually be underestimating the prevalence of food insecurity among resettled refugees in the US. Though research has attempted to establish validity …

An Evaluation Of The Techniques And Strategies For Recruiting African-Americans By 1862 Land-Grant Universities, Rashawn P. Franklin

Theses and Dissertations--Community & Leadership Development

As post-secondary education becomes more important for the American citizen to generate wealth, universities are struggling to retain and graduate African-Americans, the third-most represented demographic in the country, especially at predominately white colleges and universities. The Colleges of Agriculture at these particular institutions are struggling to even get Black students to apply, let alone graduate. One of the major issues is the disconnect between the African-American community and the idea of post-secondary education in the agricultural field. One way that disconnect can be combatted is new techniques and strategies in recruiting African-Americans. This study identifies three themes based on interviews …

The Role Of Culture In Agricultural Education: A Synthesis Of Research, Jonathan A. Tubbs

Theses and Dissertations--Community & Leadership Development

Culture is studied across many different disciplines and is viewed as a topic of great and valuable interest within research. Agricultural education has come to recognize the value of embracing a multicultural attitude and the need for recruitment of culturally diverse individuals. While definitions of culture can vary from individual to individual, understanding the degree which a topic has been researched within a discipline is necessary in order to know what direction future research should take. Therefore, this study presents the findings of research on culture within the Journal of Agricultural Education from 1960-2015. This study’s findings indicate that culture, …

Responses Of Upland Herpetofauna To The Restoration Of Carolina Bays And Thinning Of Forested Bay Margins, Joseph Ledvina

All Theses

Research on the effects of wetland restoration on reptiles and amphibians is becoming more common, but almost all of these studies have observed the colonization of recently disturbed habitats that were completely dry at the time of restoration. In a similar manner, investigations herpetofaunal responses to forest management have focused on clearcuts, and less intensive stand manipulations are not as well studied. To evaluate community and population responses of reptiles and amphibians to hydrology restoration and canopy removal in the interior of previously degraded Carolina bays, I monitored herpetofauna in the uplands adjacent to six historically degraded Carolina bays in …