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Tina KImage of Tina Kohlmanohlman
Dairy & Livestock Agent
Phone: 920.929.3171
Fax: 920.929.3181

Tina Kohlman has served as UW-Extension Fond du Lac County’s Dairy & Livestock Agent since May 2012 supporting the Fond du Lac County dairy industry through educational programs related to improving dairy production management.  Her proactive outreach includes programming efforts utilizing university-based research to help producers adopt or improve management practices on the farm; conducting on-farm field surveys and research related to milk quality and production costs; and development of publications and curriculum which help improve productivity and profitability for farm clientele.  Tina has worked closely with individual dairy farms in the county to increase profitability and productivity through a facilitated team approach to help improve milk quality, reproduction, and milk production.  She has also worked closely with farm families to facilitate discussions regarding farm succession planning.  Tina has been a leader in state-wide educational efforts regarding dairy replacements and dairy workers’ training.

Prior to 2012, Tina served as the Sheboygan County Dairy & Livestock Agent for 13 years supporting dairy farms in Sheboygan, Ozaukee and Washington Counties.  Tina is a graduate from Western Kentucky University (B.S. Biochemistry with an agriculture emphasis) and the University of Georgia (MS. Dairy Science with a nutrition emphasis).

loretta_ortizribbing 2016

Loretta Ortiz-Ribbing
Crops & Soils Agent
Phone: 920.929.3171
Fax: 920.929.3181


Loretta Ortiz-Ribbing joined the UW-Extension Fond du Lac as the Crops & Soils Area Agent in June 2016.  Her appointment is a 50:50 shared appointment with UW-Extension Dodge County providing educational outreach, opportunities and support in the areas of agronomic and horticultural crop systems.

Loretta’s long agricultural career includes working in academia, industry, government, and most importantly extension and outreach in Illinois, Indiana, Minnesota and now Wisconsin.  Most recently, as a Research Scientist with the Minnesota Department of Agriculture, Loretta wrote Best Management Practices for pollinators,  participated in the review of neonicotinoid insecticides, and facilitated outreach for water quality and pesticide management statutes.  As a retired assistant professor at UW-River Falls, Loretta taught organic production systems, sustainable agriculture, weed control and integrated pest management.  Her past applied research efforts included topics such as integrated pest management for crops, prophylactic insecticide and fungicide applications, bioherbicide for herbicide resistance weeds, cover crops, and biological interactions between plants and disease organisms in conventional, organic, and sustainable production systems.

Loretta completed her education at the University of Illinois at Urbana-Champaign in the areas of crop sciences/pathology (PhD), forestry (MS) and agronomy (BS).  She currently holds an adjunct faculty position at the University of Minnesota in the Plant Pathology Department, as well.

Image of Tina Engelhardt

Tina Engelhardt
Program Assistant
Phone: 920.929.3171
Fax: 920.929.3181


Tina Engelhardt joined the UW-Extension Fond du Lac County Agriculture Team in 2013 as a program assistant.  Tina’s responsibilities include supporting Fond du Lac County agriculture in providing administrative support to the various agriculture-related educational programs and  outreach conducted by the agriculture extension agents. Tina graduated from Marian University with a B.S. in English.

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