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Our Experts

John McMaine

John McMaine

Assistant Professor, SDSU Extension Water Management Engineer

605-688-5141

Raven Precision Ag Building 202
Ag & Biosystems Engineering-Box 2100
University Station
Brookings, SD 57007

Johnathon Wolthuizen

605-688-4600

Berg Agricultural Hall 244
Agronomy, Horticulture & Plant Science-Box 2207A
University Station
Brookings, SD 57007

Jonathan Kleinjan

Jonathan Kleinjan

SDSU Extension Agronomist

605-688-4211

Berg Agricultural Hall 225
Agronomy, Horticulture & Plant Science-Box 2207
University Station
Brookings, SD 57007

Headshot of Julian Witte

Julian Witte

605-782-3290

Sioux Falls Regional Center-CES
4101 W 38th St Ste 103
Sioux Falls, SD 57106

Julie Walker

Professor & SDSU Extension Beef Specialist

605-688-5458

Animal Science Complex 221
Animal Science-Box 2170
University Station
Brookings, SD 57007

Kari O'Neill

SDSU Extension Community Vitality Program Manager

605-685-6972

SDSU Extension Bennett County Office
PO Box M
501 Second Ave, Ste A
Martin, SD 57551

Karla Trautman

SDSU Extension Director

605-688-4792

Berg Agricultural Hall 154
Extension-Box 2207D
University Station
Brookings, SD 57007

Kasee Hieb

Kasee Hieb

Program Assistant I

605-688-4938

Berg Agricultural Hall 126
4H-Box 2207E
University Station
Brookings, SD 57007

Katherine Jaeger

SDSU Extension Youth Outdoor Education Field Specialist

605-782-3290

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

Kathleen Stern

SDSU Extension Administrative Assistant

605-995-7378

SDSU Extension Mitchell Regional Center
1800 E Spruce
Mitchell, SD 57301

Kaycee Jones

SDSU Extension 4-H Youth Program Advisor - Haakon & Jackson Counties

605-859-2840

SDSU Extension Haakon County Office
140 S Howard Ave PO Box 519
Philip, SD 57567

Kelly Froehlich

Assistant Professor/Extension Specialist - Small Ruminant Production

605-688-5433

Animal Science Complex 112
Animal Science-Box 2170
University Station
Brookings, SD 57007

Ken Olson

Ken Olson

Professor & SDSU Extension Beef Specialist

605-394-2236

SDSU West River Ag Center
711 N Creek Dr
Rapid City, SD 57703

Kiernan Brandt

605-882-5140

Animal Science Complex 101
Animal Science-Box 2170
University Station
Brookings, SD 57007

Kimberly Cripps

Kimberly Cripps

SDSU Extension Family & Community Health Field Specialist

605-688-4440

Wagner Hall 212
Food & Families Programs-CES-Box 2275A
University Station
Brookings, SD 57007