Grape phenology and GDD accumulation

April 1, 2016 by Marilyn Odneal

GDD base 50 accumulation count begins today, April 1 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 Norton E-L Stage 2-3 Bud scales opening to Wooly bud +- green showing

G Norton E-L Stage 2-3 Bud scales opening to Wooly bud +- green showing

G Cabernet Sauvignon E-L Stage 2 Bud scales opening

MVEC Delaware E-L Stage 3 Wooly bud +- green showing

MVEC Valvin Muscat E-L Stage 2 Bud scales opening

MVEC Sunbelt E-L Stage 3 Wooly bud +- green showing

MVEC Chambourcin E-L Stage 2-3 Bud scales opening to Wooly bud +- green showing

W Catawba E-L Stage 2-3 Bud scales opening to Wooly bud +- green showing

NWV Arandel E-L Stage 3 Wooly bud +- green showing

NWV Aromella E-L Stage 3 Wooly bud +- green showing

R Seyval Blanc E-L Stage 3 Wooly bud +- green showing

R Catawba E-L Stage 2-3 Bud scales opening to Wooly bud +- green showing

F Vignoles E-L Stage 1 Winter bud

F Chardonel E-L Stage 3 Wooly bud +- green showing

F Traminette E-L Stage 1-2 Winter bud to Bud scales opening

F Cayuga White E-L Stage 3 Wooly bud +- green showing

D Concord E-L Stage 3 Wooly bud +- green showing

D Vivant E-L Stage 2-3 Bud scales opening to Wooly bud +- green showing

D Vidal Blanc E-L Stage 1 Winter bud

D Mars E-L Stage 2 Bud scales opening