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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.

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Dec 4, 2020

“Risk assessment of pollen-mediated gene flow from Ga1-m field corn to dent-sterile Ga1-s popcorn” with Dr. Amit Jhala and Dr. Ethann Barnes.

Popcorn accounts for a small portion of the corn grown in the United States. It is therefore important to protect popcorn varieties from cross-pollination with other field corn varieties. Up until now, genetic differences have protected popcorn from field corn cross-pollination. However, the introduction of certain Mexican maize varieties into the corn breeding pool for desirable traits has also introduced the potential risk for corn plants that are genetically compatible with popcorn cross-pollination. Drs. Jhala and Barnes are working to assess these risks to your favorite snack.

Tune in to learn:

  • How cross-pollination in corn is similar to keys and doors.
  • The process by which corn plants are pollinated
  • What some of the key factors are in corn cross-pollination
  • Why even as little as 5% gene flow can pose a severe threat

If you would like more information about this topic, this episode’s paper is available here:

It will be freely available from 4 December to 18 December, 2020.

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Contact us at or on Twitter @FieldLabEarth if you have comments, questions, or suggestions for show topics, and if you want more content like this don’t forget to subscribe.

If you would like to reach out to Ethann, you can find him here:

If you would like to reach out to Amit, you can find him here:


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