Now showing items 1-20 of 307

    • Plasticity and constraint in growth and protein mineralization of ectomycorrhizal fungi under simulated nitrogen deposition 

      Eaton, Gregory K.; Ayres, Matthew P. (Mycological Society of America, 2002)
      Ectomycorrhizal fungi allow their host plants access to organic forms of N through enzymatic mineralization of the substrate and enhanced absorption of amino acids and mineral N. The cost to the plant is carbohydrates that ...
    • Characterization of chitinase activity and gene expression in muskmelon seeds 

      Witmer, X.; Nonogaki, H.; Beers, E. P.; Bradford, K. J.; Welbaum, G. E. (Cambridge University Press, 2003-05)
      Chitinase is often produced in higher plants as a general defence response after wounding or pathogenic attack. Since germinating seeds are exposed to soil pathogens, the activity and expression of chitinase in muskmelon ...
    • Effects of prohexadione-calcium on grape yield components and fruit and wine composition 

      Lo Giudice, D.; Wolf, T. K.; Zoecklein, B. W. (American Society for Enology and Viticulture, 2004)
      Prohexadione-calcium (prohexadione-Ca) was applied to field-grown Cabernet franc, Cabernet Sauvignon, Chardonnay, and Seyval to evaluate rates and timing effects on fruit yield components and on fruit and wine composition. ...
    • Invasive Plants -- A Horticultural Perspective 

      Niemiera, Alexander Xavier, 1951-; Von Holle, Betsy (Virginia Cooperative Extension, 2009-04-28)
      This publication explains how nonnative invasive plants are harmful and why you should care, how to predict the invasive potential of a plant, and how gardeners and landscape professionals can make informed choices when ...
    • Problem-free Trees for Virginia Landscapes 

      Hansen, Mary Ann; Niemiera, Alexander Xavier, 1951-; Day, Eric R. (Virginia Cooperative Extension, 2009-05-01)
      Listed in this publication, in alphabetical order, are some choices of problem-free trees for Virginia landscapes. These species are recommended both for their desirable horticultural characteristics, as well as their ...
    • Problem-free Shrubs for Virginia Landscapes 

      Hansen, Mary Ann; Niemiera, Alexander Xavier, 1951-; Day, Eric R. (Virginia Cooperative Extension, 2009-05-01)
      This fact sheet was developed as a guide to shrubs that generally experience few problems in Virginia landscapes. Using these species for new plantings should help you avoid troublesome disease and insect problems in your ...
    • Evergreen Rhododendron 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for the Evergreen Rhododendron.
    • Oregon Grape Holly (Manhonia) 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Oregon Grape Holly, Mahonia aquifolium.
    • Red Maple 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Red Maple, Acer rubrum.
    • Old Fashioned Weigela 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Old Fashioned Weigela, Weigela florida.
    • Rose of Sharon, Shrub Althea 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Rose of Sharon, Shrub Althea.
    • Privet 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Privet, Ligustrum.
    • Pin Oak 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Pin Oak, Quercus palustris.
    • Conserving energy with landscaping 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication describes how well-placed plantings alter the microclimate around a home, resulting in a more comfortable environment and significant savings in heating and cooling costs over time.
    • Diagnosing Plant Problems 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      Diagnosing plant problems is often a difficult task. This publication reviews the questions that will help you narrow down the cause of the problem and a systematic approach to defining the plant problems.
    • Garden Sumacs, Rhus spp. 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for the Garden Sumacs, Rhus spp.
    • Drooping Leucothoe 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for the Drooping Leucothoe.
    • Smokebush, Smoketree 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Smokebush, Smoketree.
    • Southern Magnolia 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Southern Magnolia, Magnolia grandiflora.
    • Scarlet Firethron, Pyracantha 

      Niemiera, Alexander Xavier, 1951- (Virginia Cooperative Extension, 2009-05-01)
      This publication covers the physical and main features, plant needs, functions, care, and additional information for Scarlet Firethron, Pyracantha.