Want better video quality? Sign in to access HD streaming!


Want to watch better-quality PBS Video? Sign in to access HD streaming!

When you sign in, you'll become a PBS Insider and we'll share your contact information with your local PBS station. You may receive updates to help you stay connected with what's happening online and in your community. Privacy Policy


The Phosphate Crisis in Agriculture

  • Aired: 01/16/2013
  • 59:37
  • Rating: TV-G
Patrick McLaughlin, Assistant Professor, Department of Environmental Sciences, UW-Madison, discusses his concerns about the dwindling supply of phosphorus, one of the key nutrients for growing green plants.
Embed Options
Close ×
The Phosphate Crisis in Agriculture
The Phosphate Crisis in Agriculture
Patrick McLaughlin discusses the dwindling supply of phosphorus.
Please copy this text to your clipboard.
Problems Playing Video ?
University Place is made possible by the Corporation for Public Broadcasting.
PBS Anywhere - funder area
Related Links:


Watch videos from your favorite PBS KIDS shows with the PBS KIDS Video app for your tablet or phone.

Downton Abbey Collection

Bring home the complete collection: DVDs, Blu-rays, books, gifts and more. Visit ShopPBS.


WPT helps all of us explore new worlds and ideas. Give Now