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Young farmer examining soybean plants n a field at sunset.

Be Aware of Fungicide Resistance in Field Crops

A few soybean and corn fields have received or will be receiving a fungicide application this season. We recommend scouting fields treated with fungicides to determine if diseases are controlled as expected or if there are signs of reduced sensitivity.

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.

Tan-gray Goss’s bacterial blight lesions were observed in scouted corn fields.

Goss's Bacterial Wilt and Leaf Blight of Corn

Fact sheet for identifying Goss’s bacterial wilt and leaf blight of corn, also known
as bacterial leaf freckles and wilt.

Oat leaf with very low crown rust.

Crown Rust of Oats

Fact sheet on Crown Rust of Oats for agronomist and growers.

A side-by-side comparison of two oat varietes. The one on the right has crown rust developing on it.

Utilize a Fungicide For Crown Rust Prevention in Oats

If you are growing oats this year for grain, be sure to scout and plan a fungicide application to protect the oats from crown rust.

A portion of a soybean field with soybean plants maturing with the soybean leaves turning yellow with the leaves and stems drying down. The plants in the middle of the picture were also found with charcoal rot.

Charcoal and Fusarium Rots Observed in Early Senescing Soybean Plants

The drought conditions in South Dakota have led to early soybean senescence in some areas. However, some of the early senescing may be due to dry-season diseases, such as charcoal and Fusarium rots.

sunflower field

Best Management Practices for Sunflower Production

This is your unbiased, research-based guide to sunflower production, providing the latest recommendations to help increase yield, reduce input costs and protect your investment.

A wheat field that is bright yellow due to infection of Wheat streak mosaic virus.

Pre-Plant Wheat Streak Mosaic Disease Management Strategies

Drought conditions tend to promote high wheat curl mite populations. Wheat streak mosaic virus and other viruses transmitted by wheat curl mites are best managed through cultural practices performed before planting.

Three corn cobs with common ear rots. From left: Fusarium ear rot, Gibberella ear and Diplodia ear rot.

Scout for Corn Ear Rots

Several corn fields scouted in northeastern South Dakota counties were found with ear rots. Ear rots were mostly prevalent in areas that experienced hailstorms in the recent past. Ear rots in corn are caused by a few fungal pathogens, and which ear rot develops depends on the weather conditions.

yellowed wheat field

Wheat Streak Mosaic Virus Management: Plan ahead before planting this fall

Have you had a history of moderate wheat streak mosaic disease in your field? Do you plan on planting wheat into wheat stubble or wheat fallow? Have your neighbors had wheat streak mosaic disease outbreaks in the recent past? If you answered yes to any of these questions, you need to incorporate wheat streak mosaic control principles into your management plan before planting winter wheat this fall.