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Connie Tande

SDSU Extension Plant Diagnostician

605-688-5545

Berg Agricultural Hall 206
Box 2207D
Brookings, SD 57007

Connie supports the citizens of South Dakota in her role as the SDSU Extension Plant Diagnostician at the South Dakota State University campus in Brookings.

State & Regional Offices

SDSU Campus

Also by Connie Tande

A green corn leaf with yellow to brown spots throughout.

Corn Disease Update: September 2, 2025

As of September 2, 2025, a number of corn diseases have been reported and confirmed throughout South Dakota. View our latest findings as we approach the fall harvest season.

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.

Corn leaf samples with Southern Rust and Tar Spot.

Corn Diseases in South Dakota Update

Several South Dakota counties have confirmed positive cases of Southern Rust and Tar Spot this growing season. See our latest recommendations for dealing with these diseases before they become a problem.