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1. With #pft21 in full swing this week, thought it would be a good time to share something I have been digging into on corn yields: wildfires. You read that right: wildfires. Lots of smoke and haze around this summer and we know photosynthesis needs energy from the sun. 
2. I want to begin with a foundational fact about corn yields that I learned from the great Ken Cassman, now retired from Agronomy Dept. at Univ of NE. He was kind enough to exchange emails with me awhile back and instruct me on some corn yield basics.
3. This is from a 2010 book chapter that Ken co-authored. The right panel shows the strong relationship between the total solar radiation absorbed by the corn plant post-silking and yield. Note high R2
