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SDSU Research Shows Effects Of Volunteer Corn In Corn And Soybeans

In 2007, researchers at South Dakota State University indicated that volunteer corn is much less competitive in corn than soybean. The South Dakota study (Alms et al. 2007) evaluated the full season effect of a range of volunteer corn densities (800-14,000 plants/acre) on both corn and soybean and reported yield losses that ranged from 0% to 13% in corn and 0% to 54% in soybean.

a broccolini plant is next to a person's hand for scale

SDSU Extension to host off-season Garden Hour series

September 25, 2024

Garden Hour runs weekly during the growing season, typically from May through August. The off-season episodes are scheduled from 7 to 8 p.m. Central time on Oct. 8 and Dec. 3, 2024, and Feb. 11 and April 1, 2025.

Small fly with black and white alternating bands on legs.

Soybean Gall Midge: It’s a New Species!

Researchers recently determined that the soybean gall midge, discovered in South Dakota in 2015, is actually a previously undocumented species. The origin of the new species, Resseliella maxima Gagné, is still unknown.

Mother with child cooking homemade jam in a kitchen.

Preservation Station!

At the end of this lesson, participants will be able to list the most-common methods used to preserve fruits or vegetables.

People stand in a field listening to a person speak

SDSU Extension programs help producers maintain healthy crops

August 26, 2025

Madalyn Shires puts on a lot of miles in the summer. As an assistant professor and SDSU Extension Plant Pathology Specialist, Shires traverses the state visiting research plots and educating crop producers on that research.

Teacher pouring a small amount of seed into a student's hand to construct a tiny greenhouse.

Plant the Seed

In this Grow Getters lesson, students will learn to identify the parts of a seed and the growth and development of a seed to a plant.

Spring wheat field with wheat emerging in early spring.

Latest Recommended Planting Dates for Spring Wheat in South Dakota

A major question that producers have been asking is, “How late can wheat be planted in South Dakota without a significant reduction in yield potential?” See our latest recommendations for those considering late planting this May.

Young woman photographing leaf-scorched hostas in a garden.

Garden and Yard Problems Solved: How to Submit Photos and Samples to Our Experts

Garden and lawn issues can sometimes be diagnosed by simply looking at a photo. Photos give our Extension experts a place to start, and providing them with the best possible photo can help the process.

sunflower field

Sunflower & Oilseeds

There are times when sunflower producers need unbiased answers. That’s what we are here for.

Green soybean plant with epidermis peeled back revealing numerous orange larvae

Soybean Gall Midge: What We Know So Far

In 2018, South Dakota soybean farmers were faced with a new soybean insect pest. What started with dying field borders ultimately ended with yield losses throughout many fields on the Eastern side of the state. We determined that the pest in question was the soybean gall midge.