Dr. Michael Castellano: Farmer-Led Nitrogen Research | Ep. 147

In this episode of The Crop Science Podcast Show, Dr. Michael Castellano, co-founder and lead of the Iowa Nitrogen Initiative and professor at Iowa State University, explains how farmer-led field trials are transforming nitrogen management. He discusses variable-rate experiments, precision agriculture, process modeling, and the data needed to balance profitability with environmental performance. Listen now on all major platforms!

"As long as farmers are innovating and the weather is changing, nitrogen research must continue."

Meet the guest: Dr. Michael Castellano is co-founder and lead of the Iowa Nitrogen Initiative and a professor of agronomy at Iowa State University. His work focuses on improving nitrogen management through farmer partnerships, field-scale experiments, precision agriculture, and biophysical process modeling. Listen to The Crop Science Podcast Show with Dr. Michael Castellano on all major platforms.

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What you will learn:

(00:00) Highlight

(00:37) Introduction

(03:21) Iowa Nitrogen Initiative

(05:38) Scaling farmer-led trials

(08:44) Variable-rate field experiments

(12:57) Delivering value to farmers