Skip to Content

All News and Pages Related to "tile"


Posted on August 14th, 2019

The sport of angling has spawned thousands of writers beginning with Jeremiah (Old Testament, 1000 BC), to Izaak Walton (Compleat Angler, 1653), to Ernest Hemingway (The Sun Also Rises, 1926, great book, and The Old Man and the Sea, 1952, way-overrated) and Norman Maclean (A River Runs Through It, 1977, best fishing book ever). That […]

Pipe Dreams

Posted on June 14th, 2019

People ask me how long it takes to write these. The answer is about 1 hour for writing and 1 hour for editing. It’s usually done inside my head before I start typing. Getting the idea is another matter; that’s not so easy. I do have ideas lined up but most aren’t ready to be […]

Drain Baby Drain

Posted on May 8th, 2019

The Landscape of Capitalism by former University of Iowa professor Robert F. Sayre (1933-2014; also, his is the featured image for the post) is an excellent short history of Iowa agriculture. I read Sayre’s essay many years ago and had all but forgotten it, but it was restored to my memory recently by a conversation […]

Follow the water

Posted on March 6th, 2019

In my last post, I scratched out some numbers about increased delivery of nitrate-nitrogen (N) from farmed fields to the stream network as a result of new field tile installation. In response, a farmer asked me a logical question: would enhanced crop yields (and therefore removal of nitrogen in the crop) outweigh the loss of […]

By the Numbers

Posted on February 28th, 2019

Iowa’s main policy instrument for addressing non-point source nutrient pollution (e.g. that which comes from widely dispersed sources) in our water resources is the Iowa Nutrient Reduction Strategy (INRS). Now a little over five years old, the strategy began with a science assessment of the available practices that could be used to reduce delivery of […]