GDD base 50 accumulated since April 1 = 2642 (+381 departure from normal) at Mountain Grove http://agebb.missouri.edu/weather/reports/gddTable.asp Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf We harvested the remaining Cayuga White from the Research Vineyard (5 rows) yesterday. We havested the … [Read more...] about Grape phenology and GDD accumulation