How much fertilizer do we really need?

Backed by Thomas Josephsohn, Carl Coleman, Steve Garner, Jim Atkins-Palmetto Ag, Woods End Labs, Jason Carter, Steven Harrelson, Caleb Coleman, Gerard Troisi, Dillon Soil And Water Conservation District, and 31 other backersCynthia Casey, Denny Luan, Steven Grimm, Chiapei Huang, Amy Overstreet, Buz Kloot, And1, Chris Bair, Robin Welch Lundy, Dara Park, John Egerter, David Lamm, Williamsburg Conservation District, Bill Spiegel, Marc Wright, Oscar Jasklowski, Jason Woods, Lisa C Wickliffe, Alan Chen, Maria Simons, Stewart Lundy, Dwayne Porter, Robbie McClam, Joey Williams, Pureum Kim, Chanda Cooper, Cindy Wu, Kasper Møller Andersen, Amy Collette, Becca Baughman, and Patrick Curwen