Now showing items 1-20 of 52

    • Application of system dynamics modeling techniques to an existing stream water quality model 

      Finley, Allan Michael (Virginia Tech, 1991-05-05)

      From the results of this project and report the following conclusions seem warranted:

      1. The actual behavior of any real stream system, subject to a point load, is dependent on an extremely complex and integrated ...

    • Clearing Muddy Pond Waters 

      Helfrich, Louis A.; Newcomb, Tammy J. (Virginia Cooperative Extension, 2009-05-01)
      Explains the influences muddy pond waters can have on aquatic life and provides protocols and treatments to use in order to keep pond water clear.
    • Dairy Pipeline. July/August 2010 

      James, Robert E.; Welsh, John (Virginia Cooperative Extension, 2010-07-01)
      Discusses pros and cons of feeding milk replacers to calves and environmental compliance with EPA and DEQ guidelines.
    • Dairy Pipeline. November/December 2010 

      Welsh, John; Wolfe, Jason; Petersson-Wolfe, Christina S. (Virginia Cooperative Extension, 2010-11-01)
      Discusses Virginia's Chesapeake Bay TMDL Phase I Watershed Implementation Plan and foot health of dairy cattle.
    • The effect of water quality on the metabolism of the lactic streptococci 

      Benoit, Robert E. (Water Resources Research Center, Virginia Polytechnic Institute, 1968)
    • Effectiveness of Temporary Stream Crossing Closure Techniques Forest Operations Research Highlights 

      Barrett, Scott Michael; Aust, W. Michael; Bolding, M. Chad (Virginia Cooperative Extension, 2014-08-08)
      The focus of Virginia's silvicultural water quality law is prevention of sedimentation, so stream crossings are an area where proper closure and stabilization are critical. This research focused on evaluating sedimentation ...
    • The effects of acid and water hardness on bluegill embryo-larvae determined by laboratory and on-site toxicity tests 

      Moynan, Kathleen M. (Virginia Tech, 1989-11-15)

      The sensitivity of bluegill (Lepomis macrochirus) to low pH in soft (12 or 18 mg/L CaCO3) and hard (165 or 197 mg/L CaCO3) water was compared in five day laboratory toxiclty tests. ...

    • Environmental Best Management Practices for Virginia's Golf Courses 

      Schoenholtz, Stephen Hanley; Goatley, Michael; Ervin, Erik; Steve, Hodges; Hipkins, Lloyd; McCall, David Scott; Askew, Shawn; Youngman, Rod R.; Hipkins, Patricia A.; Grisso, Robert D. (Robert Dwight), 1956-; Muckley, Glenn; George, Lester; Ballard, Mike; Roadley, Chuck; Lajoie, Matt; Rodriguez, Mark; Habel, Robert; Sexton, Tim (Virginia Cooperative Extension, 2013-02-27)
      Provides recommendations for golf courses in the Commonwealth that emphasize water quality protection and have been specifically adapted for courses in Virginia using the results of current research, the experience of golf ...
    • Filtration, Treatment, and Maintenance Considerations for Micro-Irrigation Systems 

      Benham, Brian Leslie, 1960-; Ross, B. Blake (Virginia Cooperative Extension, 2009-05-01)
      Causes and Prevention of Emitter Plugging, Water Quality Analysis, Physical plugging hazards, Biological plugging hazards, Chemical plugging hazards, Flushing, Injecting chemicals into Micro-irrigation system
    • A Guide for Virginia Forest Landowners 

      Gagnon, Jennifer L. (Virginia Cooperative Extension, 2005-09-01)
      The purpose of this publication is to provide you with a set of suggestions for starting or continuing to actively manage your land. In addition, this guide will help you understand the importance of timber harvest planning ...
    • Home Landscape Practices to Protect Water Quality 

      Relf, Diane (Virginia Cooperative Extension, 2009-05-01)
      Home lawns and landscapes may contribute to this water pollution when homeowners apply pesticides and fertilizers carelessly. By using pesticides and fertilizers properly and only when necessary and following recommended ...
    • Household Water Quality in Albemarle County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-08-14)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Caroline County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-08-19)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Clarke County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-09-08)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Floyd County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-08-29)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Franklin County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-09-02)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Frederick County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-09-09)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Goochland and Powhatan Counties, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-09-03)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Halifax County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-09-03)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...
    • Household Water Quality in Hanover County, Virginia 

      Ling, Erin; Benham, Brian Leslie, 1960- (Virginia Cooperative Extension, 2014-09-03)
      Clinic participants received objective information about caring for and maintaining their private water supply systems, and specific advice about addressing any problems that were identified through the analysis of their ...