GDD base 50 = 125 at http://agebb.missouri.edu/weather/reports/gddTable.asp
Phenology stages described according to the Modified E-L System http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf
Due to the freeze on April 18 I did not evaluate the stages. It looks as though the vineyard with the most surviving primaries is Norton in the North vineyard. It is very difficult to tell in the other vineyards, but I will continue observe and update the status of the vineyards on a weekly basis.