An immediate shortage of trucks and truck drivers threatens California farmers winter harvest. Farmers are awaiting the outcome of the latest round of NAFTA trade talks, jeopardizing ag exports to Canada and Mexico. The latest soil amendment making the rounds on California's farms is one of the oldest: biochar. What’s that all about? We talk with a University of California biochar expert. All that, crop reports, and more…on this week’s KSTE Farm Hour.