PNS Daily Newscast - July 6,2020 

Today is the final day to register to vote in Arizona's primary election; the FDA declines to back Trump claim that 99% of coronavirus cases are "harmless."

2020Talks - July 3, 2020 

Trump visits South Dakota's Black Hills, Mt. Rushmore today; nearby tribal leaders object, citing concerns over COVID-19 and a fireworks display. Plus, voter registration numbers are down from this time in 2016.

First Test of Three-Year Crop Rotation

April 6, 2012

DES MOINES, Iowa – Millions of acres of cropland are devoted to corn and soybeans every year, and more may be this year because of high crop prices. But this traditional, two-year crop rotation is a large contributor to so-called "non-point source pollution," and it may not be as profitable as it used to be.

Research from Iowa State University shows that a three-year crop rotation financially outperforms the old, two-year rotation while also protecting against soil erosion and chemical runoff. Minburn farmer Craig Flieshman says he's going to put this to the test, by planting oats and clover on one of his fields this year.

"Since the ground is covered more, there will be more erosion protection and there'll be less inputs. That strip that has the oats and clover won't need any herbicide and takes less fertilizer."

Unlike traditional planting of corn and beans, says Flieshman, this alternative crop is easier to plant and takes care of itself.

"It's grown in close rows; the ground is covered more of the year. And then, we are going to under-seed with mammoth red clover; and so, that will provide some nitrogen for the next year, and help provide some cover, once the oats are off."

The ISU researchers, who have done three-year clover, corn, and soybean rotations on test plots, found a much lower need for fertilizer and a boost in yield.

Dick Layman, Public News Service - IA