![](https://ipcm.qa.webhosting.cals.wisc.edu/wp-content/uploads/sites/54/2014/09/noTill-soilPit2-copy-e1573762688611-1200x507.jpg)
Emma Matcham, Matt Ruark, and Shawn P. Conley, UW-Madison
We talk a lot about the importance of soil sampling, but we don’t spend much time talking about what happens to your samples after you send them off to the lab. There are a few different procedures for measuring potassium (K) and phosphorous (P), and knowing which method was used to analyze your samples can help you accurately interpret the lab results.