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Welcome to UD Cooperative Extension


In 1869, the University of Delaware (UD) College of Agriculture and Natural Resources was established as the state’s land-grant university with a mission consisting of three elements: teaching, research and “extension”.

Cooperative Extension fulfills the third part of this mission: bringing knowledge to the people of Delaware. Today, we offer university knowledge, research and resources — just for you! You have questions. We have expert answers.

From nutrition classes and Master Naturalist courses to 4-H youth clubs and programs that support local agriculture — UD Cooperative Extension has something for everyone!

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Getting involved with UD Cooperative Extension is an excellent way to support and improve your Delaware community. Whether you're volunteering as a 4-H Adult Leader or donating to supporting an Extension Scholar, your local Master Gardener program, UD Cooperative Extension is grateful to have your involvement!

Managing Spotted Lanternflies

This destructive, invasive insect poses a threat to Delaware's agricultural economy. This winter and spring, it is important to watch for and destroy their eggs by crushing them or scraping them into a plastic bag with rubbing alcohol.


Trending Stories

  • Volunteers Helping Delawareans Stay Healthy  featured article image with three volunteers

    Volunteers Helping Delawareans Stay Healthy

    April 12, 2024 | Written by Gina Crist, Community Health Specialist and Health and Well-Being Program Leader
    Did you know Extension has a group of volunteers that work across the state to support health and wellness? We do! They are called Master Wellness Volunteers, and they are champions in the community for health! Each volunteer has received training and is equipped with knowledge about health equity, youth and adult partnerships, and social determinants of health. Master Wellness Volunteers serve as Walk Club Leaders, Community and School Garden Coordinators, Mindfulness and Well-being Educators and Food Educators - serving the community in a variety of ways. Leaders of walk clubs are there to support individuals looking to improve their wellness through walking while connecting with others.
  • Selecting a Drone for Crop Scouting

    April 08, 2024 | Written by Jarrod Miller, Agronomy Specialist
    After ten years the drone market has become fairly reliable, but it may still be confusing when deciding what kind of drone you may want. There are several types of drones available, with the most common being a quadcopter, which could be considered a micro-helicopter with four propellers (Figure 1a). Other options include a fixed-wing (airplane, Figure 1b), hybrid, or coaxial. A hybrid will take off like a quadcopter by flying like an airplane, helping land in tight spaces but using less battery during flight. Both fixed-wing and hybrids are better for field mapping useful in reconstructing whole fields for precision agriculture applications. For field scouting, the best option is the standard quadcopter, particularly as it can hover overtop of the field, stop at the edges, and land on the back of a truck.
  • Turfgrass Nutrient Management - Debunking Some Common Myths

    April 01, 2024 | Written by John Emerson, Turfgrass Nutrient Management Agent
    There are many myths and “wives tales” that are prevalent in the turfgrass industry, and I would like to take this opportunity to debunk a couple of them so that turfgrass managers can avoid wasted efforts and focus on more critical management issues. I am not exactly sure how these myths became ingrained in the industry, but nevertheless, they are present. Honestly, it is irrelevant as to why they are present, but what is important is the question, “How do we get rid of them?”. The answer is simple. The truth! The following list is by no means exhaustive, but hopefully, this piece will clear up some of the most common myths.
  • Weather-Based Tools to Help Delaware Farmers Make Management Decisions

    March 25, 2024 | Written by Emmalea Ernest, Phd, Extension Fruit and Vegetable Specialist, Assistant Professor, Department of Plant & Soil Sciences
    Delaware has a dense network of weather stations that is maintained by Delaware Environmental Observing System (DEOS). The weather data from DEOS stations is publicly available through the DEOS website ( The DEOS home page is a great resource for quickly checking temperature, wind speed, rainfall totals, and radar and satellite loops for Delaware (Figure 1.). I personally use the DEOS home page almost every day during the growing season to check rainfall totals and temperatures and to dodge thunderstorms as I plan (and replan) the day’s fieldwork.


Each year, impact statements summarize the accomplishments of our educational efforts! The latest impact statements are available in both text and infographic formats.

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