Grape phenology and GDD accumulation

May 21, 2013 by Marilyn Odneal

GDD base 50 accumulated since April 1 = 404 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

N Traminette E-L Stage 15

N Concord E-L Stage 15-16

N Sunbelt E-L Stage 15

N Norton E-L Stage 14

MVEC Chambourcin E-L Stage 15

MVEC Valvin Muscat E-L Stage 14

W Catawba E-L Stage 14-15

R Vignoles E-L Stage 14

R Cayuga White E-L Stage 15

R Vidal Blanc E-L Stage 14-15

R Seyval Blanc E-L Stage 15-16

R Catawba E-L Stage 14-16

D Chardonel E-L Stage 15-16

D Vivant E-L Stage 15-16