Death comes to us all. Life's but a walking shadow | OK, I succumbed to your suggestion and added in July & June average temperatures. Adding the July ave temp improve the correlation coefficient significantly, upping it to .93 but adding the June didn't help at all. Adding the July temperature tightened up the estimated yields but didn't change the conclusions. The difference between a great start and crappy start is worth 10-15 bpa depending of course on the follow on weather. The better the summer the worse the spring penalty. Makes sense, you need a good vigorous stand to maximize the good summer weather.
I repeated the analysis with Indiana and while the results aren't quite so tight, again the conclusion is, poor spring conditions cost you 10 bpa depending on the follow-on weather. Again, it makes sense, you can never get back what you lost with a poor start but great summer weather can compensate somewhat for a poor start.
The message is clear, Ill, Ind and Ohio need perfect weather going forward.
Edited by 1234 6/6/2017 08:48
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Zen, update...
