Field, Lab, Earth

Welcome to the web home for Field, Lab, Earth, the podcast from the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. The podcast all about past and present advances in agronomic, crop, soil, and environmental sciences, our show features timely interviews with our authors about research in these fields.

Field, Lab, Earth releases on the third Friday of each month in addition to the occasional bonus episode. If you enjoy our show, please be sure to tell your friends and rate and review. If you have a topic, author, or paper you would like featured or have other feedback, please contact us on Twitter @fieldlabearth or use the email icon below. You can join our newsletter to receive notifications about new episodes and related resources here.

Field, Lab, Earth features graduate and undergraduate students at the end of each episode. If you would like to be featured, please let us know by filling out this brief application form. Please note you must be a student member with ASA, CSSA, or SSSA to apply.

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The Nitrogen Value of Cover Crops with Dr. Guillermo Marcillo

Sep 19, 2025

“The Nitrogen Value of Cover Crops” with Dr. Guillermo Marcillo.

Cover crops are known for their ability to provide economic and ecosystem services to farmers, including, for example, impacting soil nitrogen. But how much nitrogen, exactly, can cover crops add or remove and how do we find out? In this episode,...

Phosphorus Conservation Practice Trade-offs with Drs. Peter Kleinman and Deanna Osmond

Nov 17, 2023

“Addressing conservation practice limitations and trade-offs for reducing phosphorus loss from agricultural fields” with Dr. Pete Kleinman, Research Leader, USDA, and Dr. Deanna Osmond, Professor, North Carolina State University.

Conservation practices are important techniques that help us move towards a more...

Food Waste Microplastics with Kate Porterfield and Dr. Eric Roy

Oct 20, 2023

“Microplastics in Composts, Digestates and Food Wastes: A Review” with Kate Porterfield, PhD Candidate at University Vermont and Dr. Eric Roy, Associate Professor at University of Vermont.

Diverting organic materials and food waste from landfills and recycling them for beneficial use in agriculture is a great way to...

Cover Crop Questions with Drs. Joby Czarnecki and Beth Baker

Jun 16, 2023

“Transitioning from conventional to cover crop systems with minimum tillage does not alter nutrient loading” with Drs. Joby Czarnecki and Beth Baker of Mississippi State University

Cover crops are often lauded as agricultural heroes boasting of a variety of ecosystems services and benefits to farmers and the world....

Recovering Amaranth Seeds from Manure with Drs. Anthony Brusa and Melissa Wilson

Jun 2, 2023

“Comparison of methods to recover amaranth weed seeds from manure” with Drs. Anthony Brusa and Melissa Wilson, Minnesota State University

Palmer Amaranth is a pesky pest that can devastate crops, and when this sneaky pest’s seeds creep into animal feed, they can find their way into unsuspecting farmers’ fields....