Grape phenology and GDD accumulation

June 24, 2013 by Marilyn Odneal

GDD base 50 accumulated since April 1 = 1031 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

Traminette E-L Stage 31

N Concord E-L Stage 32

N Sunbelt E-L Stage 32

N Norton E-L Stage 30

MVEC Chambourcin E-L Stage 31

MVEC Valvin Muscat E-L Stage 32

W Catawba E-L Stage 31-32

R Vignoles E-L Stage 32

R Cayuga White E-L Stage 31-32

R Vidal Blanc E-L Stage 31

R Seyval Blanc E-L Stage 32

R Catawba E-L Stage 32

D Chardonel E-L Stage 31-32

D Vivant E-L Stage 31-32