The previous post can be found here. http://talk.newagtalk.com/forums/thread-view.asp?tid=562816&posts=1&highlight=finished&highlightmode=1#M4633176
This is the second to last field of corn planted mid afternoon 6/10/2015. The table shows the min max air and 2 inch soil temps and corn gdd's. Since i didn't get the data logger placed untill 18:00 on the 11th the soil temps were Interpolated from the air temps recorded down the road a bit, that was for the 10th and 11th of June. When i downloaded the data logger on the 21st the corn plants were in the 1 leaf with collar stage. From the information i have gathered they say that each leaf collar stage up to v10 takes about 82 gdd's using 50 degrees as a base temperature. Also up to the 6 leaf collar stage the growth rate is influenced by the soil temperature, after that then the air temperature comes into play. Also it takes about 120 gdd's for corn to emerge.
(home place sm n o s min max air and soil temps corn gdd 2015 adjusted v 1 6 21.bmp)
(home place sm n o s 1 collar 6 21 2015.jpg)
(home place sm n o s 1 collar 6 21 2015 1.jpg)
Attachments ----------------
home place sm n o s min max air and soil temps corn gdd 2015 adjusted v 1 6 21.bmp (888KB - 304 downloads)
home place sm n o s 1 collar 6 21 2015.jpg (305KB - 317 downloads)
home place sm n o s 1 collar 6 21 2015 1.jpg (261KB - 313 downloads)
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