Donovan Olson, Regional Director

Donovan Olson

Regional Director
Olivia Logue

Olivia Logue

County Youth Coordinator

4-H Youth Development

Darla Olson

Darla Olson

Executive Director
Susan Ringhofer Image

Susan Ringhofer

4-H Office Assistant

Terry Basol

Agronomy Specialist

Crop production

Gail Castillo

Youth Development
(641) 423-0844

Curriculum development, program facilitation, group processes, leadership, grant procurement, networking

Russ Euken

Field Specialist - Livestock

Production information related to nutrition, facilities, health, records, and budgeting for swine beef, sheep and dairy producers. Computer applications for livestock production. Individual consultation on improving productivity in livestock operations. Environmentally sound livestock production methods

Mackenzie Johnson

Human Sciences Specialist, Family Life

Mackenzie works to reach families across the lifespan. She provides research-based information and education to help families make decisions that improve and transform their lives. She can speak on topics including: Adult Education, Parenting, Human Development, Aging, Early Childhood Education, Overindulgence, Ambiguous Loss, Literacy, Stress Management, PROSPER, and Family Caregiving.

Amy Jones

Amy Jones

Human Sciences Specialist, Nutrition and Wellness

Provides integrated content including family nutrition, health and wellness, food preservation and food safety.
Classes include: ServSafe, Child Care Provider Nutrition Training, Stay Independent for older adults, Food Preservation 101 and Preserve the Taste of Summer.

Jolene McCoy

External Relations Specialist
Melissa O'Rourke

Melissa O'Rourke

Farm and Ag. Business Management Specialist

Farm Transition & Estate Planning; Human Resource Management; Farmland Leasing & Land Values; Farm Business Planning


Brenda Schmitt

Human Sciences Specialist, Family Finance
Jennifer Bentley Photo

Jennifer Bentley

Extension Dairy Program Specialist

Dairy Herd Management, Young Stock Management,  and Dairy Facilities

Brian Dougherty

Brian Dougherty

Agricultural Engineering Specialist
(563) 239-7070

dairy facilities, manure handling, water quality, biochar production and use, regenerative agriculture, soil health

Joe Hannan

Horticulture Specialist

organic crop production, vegetable crop production, fruit tree management, small fruit crop management, local foods

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