You have likely seen several articles about the need for continued increases in food production to meet a growing population. Dr. Harold Reetz, formerly with the International Plant Nutrition Institute, recently wrote a very good article about the need for new champions to help raise the yield bar. Please read more here: http://www.fluidjournal.org/article1.php
I have an enormous respect for the farmers & others who have been seen as stretching the yield barrier. I grew up surrounded by farm magazine articles about fantastic corn yields by Herman Warsaw and Francis Childs. Recently Kip Cullers has been doing the same with soybeans. We definitely need to continue striving for more production, but we also need to verify that we grow food that is healthy & nutritious. Many farmers, agronomists, & consultants are working together to help in this effort, recognizing that there is more to a successful outcome than just the "Big 3" nutrients.
Yield Starts Here is a blog for farmers, focusing on increasing yield and profitability by focusing on the soil. It is managed by Craig Dick, a Blogronomist and Sales and Marketing Manager at Calcium Products. Find other articles by Craig and guest writers at http://blog.calciumproducts.com/ .