Now showing items 637-656 of 8718

    • Basic principles and ecological consequences of altered flow regimes for aquatic biodiversity 

      Bunn, S. E.; Arthington, A. H. (New York, NY: Springer-Verlag New York, LLC, 2002)
      The flow regime is regarded by many aquatic ecologists to be the key driver of river and floodplain wetland ecosystems. We have focused this literature review around four key principles to highlight the important mechanisms ...
    • Basic principles of PES 

      Jindal, Rohit; Kerr, John (Blacksburg, VA: SANREM CRSP, OIRED, Virginia Tech; Hyderabad, India: Icfai University Press, 2007)
      Over the last decade, several schemes have evolved in which those who are seen as providers of useful environmental services receive payments from the service buyers (service beneficiaries or 'users'). Known as Payments ...
    • Basic Uses of Cover Crops 

      Thomason, Wade Everett; Fleming, Cathy (Virginia Cooperative Extension, 2015-05-05)
      Notes the benefits of using a cover crop.
    • Baticulan watershed 

      World Agroforestry Center (2007-08-14)
      The Baticulan watershed in the Philippines began its partnership with a RUPES project presentation at a round-table meeting with the city mayor in Negros Occidental last October. As a result, the participants nominated the ...
    • Bayesian adaptive management of ecosystems 

      Prato, T. (Amsterdam, Netherlands: Elsevier Science B.V., 2005)
      Frequentist statistics is not well adapted to handling uncertainties inherent in managing natural resources. A frequentist approach typically involves estimating unknown parameters of ecosystem relationships and testing ...
    • A Bayesian Assignment Method for Ambiguous Bisulfite Short Reads 

      Tran, H.; Wu, X.; Tithi, S.; Sun, M.-A.; Xie, H.; Zhang, L. (PLOS, 2016-03-24)
      DNA methylation is an epigenetic modification critical for normal development and diseases. The determination of genome-wide DNA methylation at single-nucleotide resolution is made possible by sequencing bisulfite treated ...
    • Bayesian QTL mapping using skewed Student-tdistributions 

      von Rohr, Peter; Hoeschele, Ina (2002-01-15)
      In most QTL mapping studies, phenotypes are assumed to follow normal distributions. Deviations from this assumption may lead to detection of false positive QTL. To improve the robustness of Bayesian QTL mapping methods, ...
    • Bean leaf beetle (Coleoptera: Chrysomelidae) preference for two Phaseolus beans over soybean 

      Shrader, Merdith E.; Kuhar, Thomas P.; Schultz, Peter B.; Pfeiffer, Douglas G.; Kamminga, Katherine (2014)
      In the eastern and central U.S., bean leaf beetle, Cerotoma trifurcata (Förster) (Coleoptera: Chrysomelidae), is a pest of legume crops, on which adults chew holes in leaves, can destroy seedlings, and can injure pods ...
    • Bean Leaf Beetle Biology and Management in Snap Beans 

      Cassell, Meredith E.; Kuhar, Thomas P. (Virginia Cooperative Extension, 2005-09-01)
      Describes life history of bean leaf beetles, damage to bean plants, and methods of biological and chemical control.
    • Bean Pod Mottle Virus in Virginia Soybeans 

      Cassell, Meredith E.; Tolin, Sue Ann; Kuhar, Thomas P.; Schultz, Peter B. (Virginia Cooperative Extension, 2009-10-09)
      Describes disease cycle of Bean Pod Mottle Virus in soybeans. Also describes symptoms, possible sources of this disease, and management methods.
    • Beautybush 

      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 the Beautybush.
    • Beautybush (Kolkwitzia amabilis) 

      Niemiera, Alexander X. (Virginia Cooperative Extension, 2018-10-12)
      Provides information about the physical characteristics, growth requirements, and landscape functions for Beautybush, Kolkwitzia amabilis.
    • Bed Bugs and Infectious Disease: A Case for the Arboviruses 

      Adelman, Zach N.; Miller, Dini M.; Myles, Kevin M. (PLOS, 2013-08-01)
      Bed bug infestations (Cimicidae; Cimex lectularius) have been increasing worldwide over the last few decades [1,2]. Several factors have been posited to explain this resurgence, including widespread insecticide resistance, ...
    • Beef Cattle Breeds and Biological Types 

      Greiner, Scott P. (Virginia Cooperative Extension, 2005-09-01)
      There are more than 250 breeds of beef cattle. The breed, or combination of breeds, used in a defined breeding program have a significant impact on the efficiency and profitability of the beef enterprise.
    • Beef heifer fertility: importance of management practices and technological advancements 

      Moorey, Sarah E.; Biase, Fernando H. (2020-10-01)
      Abstract The development of replacement heifers is at the core of cow-calf beef production systems. In 2020, the USDA, National Agricultural Statistics Service reported 5.771 million beef heifers, 500 pounds and over, are ...
    • Beef Quality Assurance - Adding Value with E. coli Food Safety Focus 

      Flowers, Charles Webb (Virginia Tech, 2011-12)
      “Doing the right thing” as recommended by cumulative results of successive National Beef Quality Audits 1990–2010 is demonstrating positive end product quality, wholesomeness and food safety progress. As producers continued ...
    • Beet Webworms 

      Lawrence, Emily G.; Kuhar, Thomas P. (Virginia Cooperative Extension, 2014-09-01)
      This publication reviews beet webworms, their life cycle and description, plants attacked, damage caused, distribution, and control.
    • A Beginning Farmer and Rancher Community Learning Network in the Greater Richmond Area: Program Development and Initial Evaluation 

      Maxwell, Charlotte H. (Virginia Tech, 2017-07-17)
      The mission of the Virginia Beginning Farmer and Rancher Coalition (VBFRC) Program for Greater Richmond is to develop programming that fits the needs of beginning farmers in the area. This project initially focused on ...
    • Beginning With the End in Mind: Contextual Considerations for Scaling-Out a Community-Based Intervention 

      Balis, Laura E.; Strayer, Thomas E., III; Ramalingam, NithyaPriya; Harden, Samantha M. (Frontiers, 2018-12-10)
      Introduction: A number of effective physical activity programs for older adults exist, but are not widely delivered within community settings, such as the Cooperative Extension System. The purpose of this paper was to ...
    • Behavior and daily activity patterns of specialist and generalist predators of the hemlock woolly adelgid, Adelges tsugae 

      Flowers, Robbie Wayne; Salom, Scott M.; Kok, Loke T.; Mullins, Donald E. (Univ Arizona, 2007-08-14)
      The behavior and daily activity patterns of two specialist predators, Laricobius nigrinus Fender (Coleoptera: Derodontidae) and Sasajiscymnus tsugae, Sasaji and McClure (Coleoptera: Coccinellidae), and a ...