Feed for Thought - Forage Experts

Foraging for insight with nutritionist experts.

Sustaining a quality farm begins with providing quality sustenance for your animals. Listen to our global Pioneer team of agronomists and nutritionists as they share their forages expertise to help you thrive from the ground up.

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Meet Our Experts

Meet our global team of Pioneer agronomists and nutritionists - here to help you make the best decisions from seed to feed.

Bill Mahanna, Ph.D., Dipl. ACAN

Bill Mahanna - Feed for Thought

Bill is the Pioneer Global Nutritional Sciences Manager for Corteva Agriscience. He has been with Pioneer for 32 years and serves as a collaborative, associate professor in the animal science department at Iowa State University and a visiting professor at Bila Tserkva State Agrarian University in the Ukraine. Bill was raised on a Holstein dairy in upstate New York and has a bachelor’s degree in animal science from Cornell University with a master’s degree and doctorate in dairy science from the University of Wisconsin-Madison.

Dan Wiersma, M.S.

Dan Wiersma - Feed for Thought

Daniel is the Alfalfa Business Manager, Global for Corteva Agriscience. Dan serves on Pioneer’s Forage Leadership Team and is the lead for Pioneer’s corn silage working group. His passion is to help farmers and dairymen succeed in their operations by better understanding and using forage products and technology. Dan graduated from the University of Wisconsin-Madison with a master’s degree in agronomy.

Adam Krull, DVM, Ph.D.

Adam Krull - Feed for Thought

Adam is the Senior Dairy Veterinarian/Nutritionist for Corteva Agriscience. He provides technical support to dairy producers regarding forage production, harvest, storage and preservation in a manner that improves animal productivity and health. Adam received his training from Iowa State University, which encompasses many important aspects of the dairy industry. This training includes a bachelor’s degree in dairy science, a doctorate in veterinary medicine and a doctorate in veterinary microbiology.


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