Now showing items 516-535 of 807

    • Pin Oak 

      Niemiera, Alexander X. (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.
    • Pin Oak (Quercus palustris) 

      Niemiera, Alexander X. (Virginia Cooperative Extension, 2018-10-05)
      Provides information about the physical features, growth requirements, and landscape functions for Pin Oak, Quercus palustris.
    • Planning the Vegetable Garden 

      Niemiera, Alexander X.; Freeborn, John R. (Virginia Cooperative Extension, 2015-12-11)
      A guide for planning a vegetable garden, including planning guidelines, planning hints, and factors to consider for garden location.
    • Plant - Microbial and mineral contributions to amino acid and protein organic matter accumulation during 4000 years of pedogenesis 

      Moon, Jinyoung; Ma, Li; Xia, Kang; Williams, Mark A. (2016-09)
      The dynamics and persistence of proteinaceous compounds during pedogenesis are major mechanisms of soil formation and determinants of organic matter (OM) turnover. We investigated the accumulation patterns of proteinogenic ...
    • Plant Adaptation to Multiple Stresses during Submergence and Following Desubmergence 

      Tamang, Bishal Gole; Fukao, Takeshi (Mdpi Ag, 2015-12-01)
      Plants require water for growth and development, but excessive water negatively affects their productivity and viability. Flash floods occasionally result in complete submergence of plants in agricultural and natural ...
    • PlantSimLab - a modeling and simulation web tool for plant biologists 

      Ha, S.; Dimitrova, E.; Hoops, S.; Altarawy, D.; Ansariola, M.; Deb, D.; Glazebrook, J.; Hillmer, R.; Shahin, H.; Katagiri, F.; McDowell, J.; Megraw, M.; Setubal, J.; Tyler, B. M.; Laubenbacher, R. (2019-10-21)
      Background At the molecular level, nonlinear networks of heterogeneous molecules control many biological processes, so that systems biology provides a valuable approach in this field, building on the integration of ...
    • 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 ...
    • Poison ivy hairy root cultures enable a stable transformation system suitable for detailed investigation of urushiol metabolism 

      Lott, Aneirin A.; Freed, Catherine P.; Dickinson, Christopher C.; Whitehead, Susan R.; Collakova, Eva; Jelesko, John G. (Wiley, 2020)
      Poison ivy (Toxicodendron radicans) is best known for causing exasperating allergenic delayed-contact dermatitis symptoms that last for weeks on persons who have contacted the plant. Urushiols are alkylcatechols produced ...
    • Pop-up and/or Starter Fertilizers for Corn 

      Alley, Marcus M.; Reiter, Scott; Thomason, Wade E.; Reiter, Mark S. (Virginia Cooperative Extension, 2018-11-16)
      Discusses early season planting of corn, and types of fertilizers to use during this time.
    • Pop-up and/or Starter Fertilizers for Corn 

      Alley, Marcus M.; Reiter, Scott; Thomason, Wade E.; Reiter, Mark S. (Virginia Cooperative Extension, 2010)
      Discusses early season planting of corn, and types of fertilizers to use during this time.
    • Population-genomic insights into emergence, crop adaptation and dissemination of Pseudomonas syringae pathogens 

      Monteil, C. L.; Yahara, K.; Studholme, D. J.; Mageiros, L.; Méric, G.; Swingle, B.; Morris, C. E.; Vinatzer, Boris A.; Sheppard, S. K. (2016-10)
      Many bacterial pathogens are well characterized but, in some cases, little is known about the populations from which they emerged. This limits understanding of the molecular mechanisms underlying disease. The crop pathogen ...
    • Potassium Fertilization of Cotton 

      Abaye, Azenegashe Ozzie (Virginia Cooperative Extension, 2009)
      Discusses potassium uptake in cotton plants, causes for potassium deficiency, and soil and potassium fertilizer management.
    • Potential contaminants at a dredged spoil placement site, Charles City County, Virginia, as revealed by sequential extraction 

      Tang, Jianwu; Whittecar, G. Richard; Johannesson, Karen H.; Daniels, W. Lee (American Institute of Physics, 2004-12-07)
      Backfills of dredged sediments onto a former sand and gravel mine site in Charles City County, VA may have the potential to contaminate local groundwater. To evaluate the mobility of trace elements and to identify the ...
    • The Pratylenchus penetrans Transcriptome as a Source for the Development of Alternative Control Strategies: Mining for Putative Genes Involved in Parasitism and Evaluation of in planta RNAi 

      Vieira, Paulo; Eves-van den Akker, Sebastian; Verma, Ruchi; Wantoch, Sarah; Eisenback, Jonathan D.; Kamo, Kathryn (PLOS, 2015-12-14)
      The root lesion nematode Pratylenchus penetrans is considered one of the most economically important species within the genus. Host range studies have shown that nearly 400 plant species can be parasitized by this species. ...
    • Precision Farming Tools. Soil Electrical Conductivity 

      Grisso, Robert D. (Robert Dwight), 1956-; Alley, Marcus M.; Holshouser, David Lee, 1963-; Thomason, Wade E. (Virginia Cooperative Extension, 2005-09-01)
      Soil electrical conductivity (EC) is one of the simplest, least expensive soil measurements available to precision farmers today. Soil EC measurement can provide more measurements in a shorter amount of time than traditional ...
    • Precision Farming Tools: Variable-Rate Application 

      Grisso, Robert D. (Robert Dwight), 1956-; Alley, Marcus M.; Thomason, Wade E.; Holshouser, David Lee, 1963-; Roberson, Gary T. (Virginia Cooperative Extension, 2011-08-01)
      Discusses the two basic variable-rate application technologies, map-based and sensor-based, for fertilizer, lime, weed control, and seed.
    • Prevention and Control of Palmer Amaranth in Cotton 

      Holshouser, David Lee, 1963-; Wilson, Henry P. (Virginia Cooperative Extension, 2008)
      Discusses methods for prevention and control of Palmer Amaranth (Amaranthus palmeri) in cotton fields.
    • Privet 

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

      Niemiera, Alexander X. (Virginia Cooperative Extension, 2018-10-17)
      Provides information about the physical characteristics, growth requirements, and landscape functions for privet. Also notes that many species of privet are invasive.
    • Problem-free Shrubs for Virginia Landscapes 

      Hansen, Mary Ann; Niemiera, Alexander X.; Day, Eric R. (Virginia Cooperative Extension, 2016-06-27)
      This fact sheet was developed as a guide to shrubs that generally experience few problems in Virginia landscapes. Using theses species for new plantings should help you avoid troublesome disease and insect problems in your ...