Browsing Department of Agricultural Biology by Date "2011"

Now showing items 1-9 of 9

      • Examining the unpredictable nature of yellow toadflax 

        Author(s):Krick, Nicholas Jon, author; Beck, Kenneth George, advisor; Nissen, Scott Jay, committee member; Ward, Sarah M., committee member; Meiman, Paul J., committee member
        Date Issued:2011
        Format:born digital; masters theses
        Yellow toadflax (Linaria vulgaris Mill.) is an aggressive creeping perennial forb that was introduced to North America in the 1600's. It is now naturalized throughout the United States and Canada and is a serious weed in ...

      • Defense response signaling for disease resistance in rice 

        Author(s):Bruce, Myron Anthony, author; Leach, Jan E., advisor; Chisholm, Stephen, committee member; Ranu, Rajinder, committee member; Bush, Daniel R., committee member
        Date Issued:2011
        Format:born digital; doctoral dissertations
        Plant disease resistance is often associated with a type of programmed cell death (PCD) called the hypersensitive response (HR). Upon recognition of pathogen proteins or their activity, the affected cell and surrounding ...

      • Control and dispersal of Russian olive (Elaeagnus angustifolia L.) 

        Author(s):Edwards, Ryan James, author; Beck, Kenneth George, advisor; Nissen, Scott Jay, committee member; Clarke, Larry, committee member; Meiman, Paul J., committee member
        Date Issued:2011
        Format:born digital; masters theses
        To view the abstract, please see the full text of the document.

      • Spatial dynamics of weeds in irrigated corn 

        Author(s):O'Meara, Scott, author; Westra, Phil, advisor; Khosla, Rajiv, advisor; Brown, Cynthia, committee member; Reich, Robin, committee member
        Date Issued:2011
        Format:born digital; doctoral dissertations
        To view the abstract, please see the full text of the document.

      • Aspen mortality in the Colorado and southern Wyoming Rocky Mountains: extent, severity, and causal factors 

        Author(s):Dudley, Megan, author; Jacobi, William R., advisor; Tisserat, Ned A., committee member; Negron, Jose, committee member; Martin, Patrick H., committee member
        Date Issued:2011
        Format:born digital; masters theses
        Quaking aspen (Populus tremuloides Michx) is a deciduous hardwood tree widely distributed throughout North America. In Colorado, quaking aspen is found on a wide variety of sites, from the lower-elevation foothills of the ...

      • Spiders as potential aphid predators in eastern Colorado agroecosystems 

        Author(s):Kerzicnik, Lauren M., author; Peairs, Frank B., advisor; Cushing, Paula E., advisor; Hufbauer, Ruth A., committee member; Peterson, Gary, committee member
        Date Issued:2011
        Format:born digital; doctoral dissertations
        Spiders are indigenous, ubiquitous natural enemies that have been associated with reduced pest densities and may be particularly useful in reducing aphid densities. Diuraphis noxia is an important economic pest in wheat ...

      • Revision of the new world Hylurgops LeConte (Coleoptera: Curculionidae: Scolytinae) 

        Author(s):Mercado-Vélez, Javier, author; Kondratieff, Boris C., advisor; Negrón, José F., committee member; Bright, Donald E., committee member; Smith, Frederick W., committee member
        Date Issued:2011
        Format:born digital; masters theses
        The New World species of the genus Hylurgops LeConte are revised. Hylurgops subcostulatus Mannerheim is transferred to Pachysquamus, new genus. A revised key to the Hylastina is presented to include the new genus Pachysquamus. ...

      • Two entomological studies: 1, The potential of Methyl jasmonate applications as a pest management method on cruciferous crops. 2, Contributions to the biology of Disholcaspis quercusmamma (Walsh) (Hymenoptera: Cynipidae) 

        Author(s):McEwen, Crystal Lee, author; Cranshaw, Whitney, advisor; Kondratieff, B.C. (Boris C.), committee member; Stonaker, Frank H., 1958-, committee member
        Date Issued:2011
        Format:born digital; masters theses
        Methyl jasmonate (MeJA) is known for the many physiological roles in plants, including induced resistance to herbivores. Treating plants with exogenous applications of MeJA has been shown to have various effects on the ...

      • A review of the broad nosed weevil genus Thecesternus Say found in the continental United States (Coleoptera: Curculionidae: Entiminae) 

        Author(s):McCollum, Shiloh Rae, author; Kondratieff, Boris, advisor; Bright, Donald, committee member; Black, William, committee member; Mueller, Rachel, committee member
        Date Issued:2011
        Format:born digital; masters theses
        The taxonomy and nomenclature of the North American weevil genus Thecesternus Say was reviewed. Five previously described species are recognized as valid: affinis, foveolatus, hirsutus, humeralis, and maculosus. One new ...