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Filtering by: Creator Hemel, Dennis R. Remove constraint Creator: Hemel, Dennis R. Degree Field Horticulture Remove constraint Degree Field: Horticulture

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  • Ecophenology and Control of European Frogbit in a Hybrid Cattail Marsh of the St. Marys River, Michigan

    Creator:
    Wellons, Kathryn C.
    Abstract:
    Great Lakes coastal wetland communities are threatened by the impacts of invasive plants on ecosystem function and biodiversity. What allows invasive plants to become dominant in invaded communities can be hard to define and context-dependent. Traits associated with invasion success in wetland systems – rapid vegetative growth, competitive superiority in...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Dennis Albert Great Lakes coastal wetland communities are threatened by the impacts

  • Effects of inoculation with rhizobium and nitrogen fertilizer on snap beans, soybeans and lima beans

    Creator:
    Ma, Mei-hwa Wang
    Abstract:
    The responses of 'Oregon 1604' snap beans (Phaseolus vulgaris L.), 'Early Thorogreen' lima beans (Phaseolus lunatus L.), and 'Takii's Extra Early' soybeans (Glycine max L.) to two methods of inoculation with rhizobium (seedcoating and furrow treatments) and rates of nitrogen fertilizer were studied in field experiments. Nitrogen rates ranged from...
    Resource Type:
    Masters Thesis
    Full Text:
    BEANS T—^TT : Abstract approved; ^ r -^—^—~- " y / ' ''''—'' '" Harry J. Mack The

  • Micropropagation of Pyrus rootstocks

    Creator:
    Yeo, Dennis
    Abstract:
    The availability of new pear rootstocks could be increased by development of an efficient micropropagation system. Many P. calleryana, P. betulifolia and P. communis rootstocks are resistant to many pear diseases and are graft compatible with leading cultivars. Explains of three potentially useful rootstock selections P. calleryana Decne 'OPR 157',...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Dennis Yeo for the degree of

  • Water Efficiency for Urban Landscapes in Semi-Arid Environments

    Creator:
    Martinson, Richard W.
    Abstract:
    Urban landscape water use is increasingly a focus of water conservation efforts. This is especially true in the arid and semi-arid regions of the western United States where increased demand, environmental concerns, and extended periods of drought have created chronic water shortages. However, until recently, little attention has been paid...
    Resource Type:
    Dissertation
    Full Text:
    . Dennis Albert provided editing and enthusiastic feedback on this chapter. Chapter 3. John

  • Managing Microdochium Patch Using Non-Traditional Fungicides on Annual Bluegrass Putting Greens

    Creator:
    Mattox, Clint M.
    Abstract:
    Currently, fungicide applications are the predominant method of control for the cool weather pathogen Microdochium patch (Microdochium nivale). Increasing pesticide restrictions have generated concern regarding management of Microdochium patch. Three separate field trials exploring non-traditional fungicides were conducted between 2013 and 2015 on an annual bluegrass (Poa annua L.) sand-based...
    Resource Type:
    Masters Thesis

  • Perception and reproductive response of common beans (Phaseolus vulgaris L.) to photoperiod

    Creator:
    Privett, Diane Winters
    Abstract:
    Three Oregon snap beans were tested for photoperiodic response on the basis of their overall flowering patterns. Oregon 1604 and Oregon 4848 showed the same cumulative flowering curves and percent pod set under both 11 hour SD and 16 hour LD photoperiods. Under SD, Oregon 2065 produced a similar flowering...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ^ Jack R. Stang 1^~ Three Oregon snap beans were tested for photope- riodic response on

  • Breeding tomatoes for improved antioxidant activity

    Creator:
    Mes, Peter Jack, 1976-
    Abstract:
    Purple tomatoes (Lycopersicon esculemtum) were bred by incorporating genes that result in anthocyanin production in the skin of fruits. These genes originally came from related wild species as no naturally occurring genes encoding fruit anthocyanin expression are known within the cultivated species. By combining Aft or Abg with atv or...
    Resource Type:
    Dissertation
    Full Text:
    Improved Antioxidant Activity. Abstract approved: / t-"1 ■—c 1 ^ / James R. Myers/ Purple

  • Influence of photosynthesis and carbohydrates on adventitious root formation by leafy cuttings

    Creator:
    Davis, Tim D.
    Abstract:
    Many investigators have suggested that current photosynthate supply can limit adventitious root formation on leafy cuttings. Accordingly, studies were undertaken to determine the effects of altering photosynthesis and carbohydrate levels on adventitious root formation by leafy cuttings of a number of different species. Pea cuttings rooted at high CO₂ (1800...
    Resource Type:
    Dissertation
    Full Text:
    professor Dr. John R. Potter for his counsel and support throughout my graduate study. I also thank

  • Improvement of cryopreservation regrowth of in vitro Ribes by pretreatment

    Creator:
    Luo, Jie, 1968-
    Abstract:
    Improved recovery of cryopreserved meristems and calli from in vitro currant (Ribes aureum Pursh and R. ciliatum Humb. & Bonpl.) plants was obtained by two-hour pretreatment with sucrose, proline, abscisic acid-responsive protein (RABP), and bovine serum albumin (BSA) solutions. Meristems and calli cold-acclimatized for one week were immersed in pretreatment...
    Resource Type:
    Masters Thesis
    Full Text:
    cryopreserved meristems and calli from in vitro currant [Ribes aureum Pursh and R. ciliatum Humb. & Bonpl

  • Effect of several apple rootstocks on growth, yield components and leaf area estimates on "Starkspur Supreme Delicious" trees

    Creator:
    Siller-Cepeda, Jorge H.
    Abstract:
    Growth, yield components and leaf area were evaluated on 'Starkspur Supreme Delicious' apple on nine rootstocks: MAC 24, EMLA 7, EMLA 26, OAR 1, MAC 9, 0.3, EMLA 9, M 9, and EMLA 27. Estimates of planting density based on growth, estimates of leaf area based on four independent variables...
    Resource Type:
    Masters Thesis
    Full Text:
    Delicious' apple on several rootstocks 79 21. Correlation coefficients (r) for measured leaf area (MLA