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Teen boy and adult male reviewing specimens under magnifying glass.

Science of Agriculture

View all science of agriculture resources.

Several chickens in chicken coup. Some are resting lethargically.

Importance of Chicken Infectious Bronchitis Virus: Q&A

Infectious bronchitis virus (IBV) is a coronavirus that infects chicken flocks, causing respiratory disease. Some IBV isolates can result in a kidney disease (nephritis). Drop of egg production in laying hens is an important sign for IBV infection.

young male 4-H member showing a hereford heifer

Competitions & State Fair

4-H members showcase their knowledge and skills during county and state competitions.

Teen boy and adult male reviewing specimens under magnifying glass.

Science of Agriculture - Quick Start Guide and Topics

Use this guide to navigate the complete Science of Agriculture program; from recruiting team members all the way through celebrating at the end of the season.

Young boy measuring flour, 4-H, Cloverbuds

2020 State 4-H Event Cancellation List

This list aids planning and decision-making for 4-H member families and volunteers in light of the ongoing COVID-19 pandemic.

cans of various jams and jellies on a shelf

SDSU Extension Food & Families Team to Host Virtual “Coffee Break” Question and Answer Series

July 31, 2020

The SDSU Extension Food and Families team will host a six-week virtual “coffee break” series every Tuesday at 2:00 p.m. CST/1:00 p.m. MST beginning Tuesday, April 7.

Two side-by-side field plots. The left field has corn planted, and the right has soybeans.

Field Studies: Replicated Comparisons vs. Side-by-Side Comparisons

How should a basic study be set up or laid out in the field? One very common approach is to divide a field in half and compare the halves or possibly compare two fields in close proximity and see which variety or practice yields highest. This approach can end with very misleading results because of the variability that exists across a field or fields due to many factors.

female youth cooking ground beef in a frying pan

4-H Food Science Project

If you have ever baked a cake or even eaten an apple, you have taken part in food science. Food science encompasses how our body utilizes food (nutrition) as well as what changes food goes through on its way to our plates (food safety and preparation).

Ellie Wagner posing next to a cow at the Yankton County Fair.

Yankton Teen Gains Livestock Experience Through 4-H

4-H has allowed Ellie Wagner of Yankton, S.D. to explore different aspects of life that she normally wouldn't. Even though she lives in town, her club leader helped her become involved with showing livestock.