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Connie Strunk

SDSU Extension Plant Pathology Field Specialist

605-782-3290

SDSU Extension Sioux Falls Regional Center
4101 W 38th St Ste 103
Sioux Falls, SD 57106

Connie supports the citizens of South Dakota in her role as the SDSU Extension Plant Pathology Field Specialist based in Sioux Falls.

Also by Connie Strunk

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

Wheat Streak Mosaic of Wheat

Fact sheet about symptoms, disease cycle, risk factors and management of Wheat streak mosaic disease

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.

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.