Pretty hopeless in predicting deficiency

There’s an interesting blog post by Jim Orson titled “Read this before leaf tissue testing for micronutrients." The entire post is worth reading. It describes his conclusions after studying the result of 15 trials with winter wheat.

Why I don't worry about micronutrients

This is nothing new. We’ve been discussing this for a long time. But these charts are new. I wanted to explain why I don’t worry about micronutrients. I’m going to explain this in words first, and show the charts at the very end.