Skip to main content
College of Agricultere & Natural Resources
  • Home
  • News
  • Events
  • Give
  • Departments
    • Agricultural & Resource Economics
    • Animal & Avian Sciences
    • Entomology
    • Environmental Science & Policy
    • Environmental Science & Technology
    • Institute of Applied Agriculture
    • Nutrition & Food Science
    • Plant Science & Landscape Architecture
    • Veterinary Medicine
    • University of Maryland Extension
Home
  • About
    • AGNR Compliance
    • History
    • Careers
    • Strategic Initiatives
    • Office of the Dean
    • Directory
    • Directions
    • Contact Us
    • For Faculty & Staff
    • Alumni
  • Undergraduate
    • Programs & Pathways
    • Future Students
    • Current Students
    • Academic Programs and Student Services
    • Fund Your Education
  • Graduate
  • Outside the Classroom
    • AGNR Discovery & Innovation Night
    • Clubs and Organizations
    • International Programs
    • Internships & Careers
    • Research
    • Study Abroad
  • Extension
    • Find an Extension Office
    • News Updates
    • Program Areas
  • Research
    • Maryland Agricultural Experiment Station
    • Research Areas
    • Research and Education Centers & Locations
    • Resources
    • Grant Programs
    • Research Newsletter
    • International Research
Menu
Home
  • About
    • AGNR Compliance
      • Civil Rights Guides and Administrative File Index
      • Laws, Directives & Regulations
      • AGNR Equal Access Policies
      • Public Notification & Civil Rights Posters
      • Disability Resources
      • Language Access
      • Population Data
      • IPA Forms and Procedures
      • Compliance Training
      • Program Complaints & Procedures
    • History
    • Careers
    • Strategic Initiatives
      • Establish a Healthy Food System and Ensure Global Food and Nutritional Security
      • Ensure Healthy Watersheds and the Chesapeake Bay
        • Bay Careers
        • Bay Research - Climate Change
        • Bay Research - Collaborations
        • Bay Research - Communities
        • Bay Research - Fertilizer
        • Bay Research - Land Use
        • Bay Research - Stormwater
      • Advance Innovative, Profitable, and Sustainable Agricultural Production Systems
        • ACE Virtual Center
          • Current AGNR Students
            • AGNR Featured Alum Archive
              • Amy Kline
              • Kyra Neal
            • Internship Story Archive
              • John Sheridan
          • K-12 Students and 4-H Participants
          • MD Aspiring Farmers
            • MD Beginning Farmer Archive
              • Dominic Nell
              • Vanessa Lubiner
            • MD Farmer Advice Archive
              • Tyler Butler
          • Prospective Employers
          • UMD Prospective Students
            • Rachael May
            • Student Spotlight Archive
      • One Health: Improve Human, Animal, and Environmental Health
      • Optimize Urban Environments Through Design, Green Technology, and Community Engagement
    • Office of the Dean
      • Dean's Dispatch
      • Dean's Leadership Team
    • Directory
    • Directions
    • Contact Us
    • For Faculty & Staff
      • Administrative Services
        • AGNR Admin Procedures & Campus Policies
        • Budget & Finance
          • Fiscal Officers' Meetings
        • Easy Access Links
        • Human Resources
          • Careers at AGNR
          • Consulting/Overload Policy
          • Hiring Employees
            • Faculty Contract Review Checklist
        • Payroll & Benefits, Onboarding
        • Research Incentives Process
        • Travel Services
      • Professional Development
      • AGNR Awards Nominations
        • Excellence in Extension Award
        • Excellence in Instruction Award
        • Excellence in Research Award
      • AGNR Communications Team Services
        • How to Work with us
      • AgPAS (Pre-Award Services)
        • AgPAS Mission
        • AgPAS Tools
        • Notice of Intent to Submit
        • Questionnaire - Funded
        • Questionnaire - Non-Funded
      • Career Integration
      • Faculty Research Resources
      • IT Support
      • PEMS Review
    • Alumni
      • Alumni Awards
      • Symons Squad
  • Undergraduate
    • Programs & Pathways
      • Agricultural & Resource Economics
      • Agricultural Science & Technology
      • Animal Science
      • Environmental Science & Policy
      • Environmental Science & Technology
      • Fermentation Science
      • Institute of Applied Agriculture
      • Landscape Architecture
      • Nutrition & Food Science
      • Plant Science
      • Veterinary Medical Science
      • Veterinary Medicine
    • Future Students
      • Visit AGNR
      • Certificates
      • For Admitted Students
        • New Student Orientation
        • Campus Resources
        • UNIV100: The Student in the University
      • Apply to AGNR @ UMD
      • Create Your Path
      • Pre-College Programming
      • Student Ambassadors
    • Current Students
      • Academic Advising & Support
        • Four Year Plans
        • Change Your Major
        • Exceptions to Academic Policy
          • Policy Exception FAQs
        • Permission to Enroll at Another Institution
      • Academic Honors
      • AGNR Commencement
      • Departmental Resources
      • Peer Mentor Program
        • Peer Mentors
    • Academic Programs and Student Services
    • Fund Your Education
      • AGNR's Celebration of Scholarships
      • Scholarship Acceptance Process
  • Graduate
  • Outside the Classroom
    • AGNR Discovery & Innovation Night
    • Clubs and Organizations
      • AGNR Student Council
      • Alpha Gamma Rho Fraternity
      • American Ecological Engineering Society
      • Beekeeping Club
      • Block and Bridle
      • Community Learning Garden
      • Dean's Student Advisory Council
      • ENSPire
      • Epsilon Eta
      • Food Science Club
      • MANRRS
      • Maryland Equestrian Club (MEC)
      • Maryland Equestrian Team (UMET)
      • Maryland Eventing Team
      • Pre-Vet Society
      • Student Dietetic Association
      • RESTORE
      • Student ASLA: SASLA
      • Sigma Alpha Sorority
      • Sustainable Ocean Alliance
      • Terps for International Agriculture Science (TIAS)
      • The Wildlife Society
    • International Programs
      • International Courses
      • International Opportunities
        • Farmer To Farmer
        • Fulbright Scholars
        • Host a Visiting Scholar
      • Partnership for Skills in Applied Sciences, Engineering and Technology (PASET)
      • Special Topics in Agriculture Video Series
      • Research in Africa
        • UMD ROOTS Africa
    • Internships & Careers
      • Resources for Employers
      • Agriculture Future of America Opportunities
      • Undergraduate Technology Apprenticeship Program (UTAP)
    • Research
      • Summer Opportunities in Agricultural Research and the Environment (SOARE)
    • Study Abroad
  • Extension
    • Find an Extension Office
    • News Updates
    • Program Areas
  • Research
    • Maryland Agricultural Experiment Station
      • MAES News
        • Heath McPherson
        • Metagenomes
        • Pilots on the Ground
        • Retro Cattle
        • Strawberry Neopest
        • Sunflowers
    • Research Areas
      • Commodities
      • Departments
      • Strategic Initiatives
      • Thematic Areas
    • Research and Education Centers & Locations
      • Center for Food Safety and Security Systems
      • Central Maryland Research & Education Center
        • Beltsville Facility
        • CMREC Headquarters
        • Clarksville Facility
        • Paint Branch Turfgrass Facility
        • Upper Marlboro Facility
      • Harry R. Hughes Center for Agro-Ecology
        • Board of Directors
          • In Remembrance of Dr. Russell Brinsfield
          • In Remembrance of Dr. Sarah Taylor-Rogers
        • Education and Outreach
          • Hughes Center News
        • Russ Brinsfield Internship Program
        • Scientific Research
          • Agriculture
          • CMREC Turfgrass Evaluation Trials
          • Land Use
          • Oyster Aquaculture
          • Role of Rhizobial Diversity for Drought and Herbivory Tolerance in Soybean
          • Soil Health
          • Water Quality
            • Evaluating Riparian Buffer Incentive Programs
          • Forestry
            • Technical Study on Changes in Forest Cover and Tree Canopy in Maryland
          • Saltwater Intrusion
        • Maryland Climate-Smart Agriculture
        • Agricultural Conservation Leasing
      • Joint Institute for Food Safety and Applied Nutrition
      • Lower Eastern Shore Research & Education Center
        • Poplar Hill Facility
        • Salisbury Facility
        • Interregional Research Project #4
      • Northeastern Regional Aquaculture Center
        • Organizational Structure
      • Western Maryland Research & Education Center
        • Kids Growing with Grains
      • Wye Research & Education Center
        • Wye Angus
          • Annual Sale
          • Internships
          • Mailing List
        • Wye Weather
      • Research Greenhouse Complex
    • Resources
      • Weather Data
        • CMREC - Beltsville Facility
        • CMREC - Clarksville Facility
        • CMREC - Paint Branch Turfgrass Facility
        • CMREC - Upper Marlboro Facility
        • LESREC - Poplar Hill Facility
        • LESREC - Salisbury Facility
        • WMREC
        • Wye REC
    • Grant Programs
      • AgHIPS: AGNR High Impact Proposal/Project Support Program
      • MAES Equipment Grant
      • MAES Research Grant Program
      • Multistate Research Program
    • Research Newsletter
      • 'Roots in Research' Newsletter - Beltsville - Yield Year 2022
      • 'Roots in Research' Newsletter - Upper Marlboro Facility 2022
      • 2022 Maryland Soybean Fungicide Efficacy Trials
      • 2022 Maryland Soybean Fungicide Efficacy Trials
      • Assessment of Ecosystems Services Provided by Arthropods on Farms: Preliminary Use of Sticky Traps to Sample Flying Insects
      • Efficacy of Organic Turf and Landscape Herbicides in Montgomery County, Maryland
      • Evaluation of Grafted Watermelon for Fusarium Wilt Management
      • Evaluation of Grafted Watermelon for Fusarium Wilt Management
      • Evaluation of Growth-Promoting Products for Soybean Production
      • Final Report for Maryland Soybean Board 2021 Grant - Evaluating Soybean Variety Performance and Response to Deer Grazing
      • Roots in Research - Clarksville Facility 2022
      • Roots in Research - Clarksville Facility 2022
      • Roots in Research - Clarksville Facility 2022
      • Roots in Research CMREC - Beltsville Facility - Yield Year 2023
      • Roots in Research CMREC - Clarksville Facility - Yield Year 2023
      • Roots in Research LESREC - Poplar Hill and Salisbury Facilities - Yield Year 2023
      • Roots in Research Newsletter - Beltsville Facility 2022
      • Roots in Research Newsletter - LESREC - Poplar Hill & Salisbury Facilities - 2022
      • Roots in Research Newsletter - Paint Branch Turfgrass Facility 2022
      • Roots in Research WMREC Headquarters - Keedysville Facility - Yield Year 2022
    • International Research
  • Home
  • News
  • Events
  • Give

Search Directory

  1. Home
  2. About AGNR
  3. Directory
  4. Search Directory
Sort By:
Name Contact Information Expertise
Andrew G. Ristvey

Principal Agent & Extension Specialist for Commercial Horticulture

Wye Research and Education Center
Agriculture & Food Systems (AgFS)
University of Maryland Extension

aristvey@umd.edu

410 827-8056 x113

Commercial Horticulture

Alternative Specialty Crops

Green Roof

Aronia

Wye REC
College of Agriculture and Natural Resources
  • Extension
  • Careers
  • Directory
  • Contact Us
  • Facebook
  • Instagram
  • Twitter
  • Youtube
  • Give
  • Login
© 2018-2025 College of Agriculture and Natural Resources
Web Accessibility | Privacy Policy

University programs, activities, and facilities are available to all without regard to race, color, sex, gender identity or expression, sexual orientation, marital status, age, national origin, political affiliation, physical or mental disability, religion, protected veteran status, genetic information, personal appearance, or any other legally protected class.