Growing degrees days

Hi,
In Daily Report there is value “Growing degrees days”.
Wherefrom that value comes? I don’t find any info for that.
(third line from bottom in this link: http://www.antto.net/saa/November2004.htm)

Brian, is possible add two tags for this? E.g “monthGDR” and “yearGDR”
Even better if that value can be put on the graph!

Cheers
Eki

happy that there are interested people in growing degree days.

I quite agree.

That would be a feature that I would like as well.

Thanks

Greg

[quote]A corn growing degree day (GDD) is an index used to express crop maturity. The index is computed by subtracting a base temperature of 50