Are hog farms the leading cause of nitrate-nitrogen in water supplies?

In a recent discussion, I was asked how much of Iowa’s fertilizer need was being met by land application of swine manure. At the same time, I’ve been driving across much of Iowa and looking at a corn crop that appears to have run out of nitrogen because of potential leaching of water soluble N due to the wet summer. I have also started thinking about community water supplies and the potential in future years for the pork industry to be cited as the cause of elevated nitrate-N levels in drinking water supplies. Read More...

More thoughts from Argentina

The swine conference I attended in Mendoza, Argentina was very interesting. I had lunch yesterday with a producer from Chile who’s production records rival the best systems in the US. His challenge – how to source feed ingredients. In addition to attending the swine conference, he was spending several days sourcing corn that he will be feeding in December. Read More...