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Soil fertilizer spread within a one square foot box.

Seven Grams of Fertilizer Is All It Takes: Growing Optimal Corn in South Dakota

Have we really asked how much fertilizer is really takes to grow a decent corn crop? Learn some important considerations for fertilizing corn and improving long-term soil health and fertility.

White canvas material covered in dark colored aphids.

Cowpea Aphid Populations Taking off in Alfalfa

In southeast South Dakota, we are observing large cowpea aphid populations in alfalfa. Large populations can reduce yields, and, if left unmanaged, these infestations even kill the plants.

A young native american man handing a customer a canvas bag.

Native American Gardens

Learn more about Native American community garden projects throughout South Dakota and access helpful resources with information on starting up Native American community garden projects.

A small herd of cattle gathered around a pond on an open range.

Livestock Water Testing

SDSU Extension offers on-site livestock water testing services at various locations across the state. 

4-H ribbons and awards stacked on a table.
Jul 16

4-H County Achievement Days and County Fair Schedule

SDSU Extension's South Dakota 4-H program will be hosting county fairs and achievement days across South Dakota beginning in July 2026.

many hands raised in the air with sky background and the word volunteer

Volunteer Policies & Forms

These policies and forms provide useful information for volunteers.

red barn with a white shed in front of it and trees in the background

4HOnline & FairEntry

Instructions for using 4HOnline and FairEntry.

Oglala Lakota County

A group of Custer County Master Gardener volunteers gathered for a group photo.
Oct 02

Master Gardener Conference

The 2026 Master Gardener Conference will be held October 2-3. This event is an opportunity to obtain timely, research-based gardening information. Enjoy a unique venue, speakers and socialize with Master Gardener colleagues from across the state!

Small group of beef cattle eating hay spead out in a winter pasture.

How to Interpret Forage Test Results

Forage testing is a management tool that both forage and livestock producers should incorporate into their operations. Knowing the quality of the feed being provided allows producers to meet livestock nutritional needs more accurately and cost-effectively.