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What's happening in the field?

At the Missouri State Fruit Experiment Station

Grape phenology and GDD accumulation

April 9, 2018 by Marilyn Odneal

GDD base 50 accumulation for April 9 = 0 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

It has been cold and NO GDDs have accumulated for this first week in April.

N Norton E-L Stage 1-2 Winter bud to Bud scales opening.
N Norton E-L Stage 1-2 Winter bud to Bud scales opening.
G Norton E-L Stage 1-2 Winter bud to Bud scales opening.
G Norton E-L Stage 1-2 Winter bud to Bud scales opening.
G Cabernet Sauvignon E-L Stage 1-2 Winter bud to Bud scales opening.
G Cabernet Sauvignon E-L Stage 1-2 Winter bud to Bud scales opening.
MVEC Delaware E-L Stage 2 - 3 Bud scales opening to Wooly bud +- green showing.
MVEC Delaware E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing.
MVEC Sunbelt E-L Stage 3 Wooly bud +- green showing.
MVEC Sunbelt E-L Stage 3 Wooly bud +- green showing.
MVEC Chambourcin E-L Stage 1 - 2 Winter bud to Bud scales opening.
MVEC Chambourcin E-L Stage 1 – 2 Winter bud to Bud scales opening.
W Catawba E-L Stage 1-2 Winter bud to Bud scales opening.
W Catawba E-L Stage 1-2 Winter bud to Bud scales opening.
NWV Chardonel E-L Stage 1-2 Winter bud to Bud scales opening.
NWV Chardonel E-L Stage 1-2 Winter bud to Bud scales opening.
R Seyval Blanc E-L Stage 2 - 3 Bud scales opening to Wooly bud +- green showing.
R Seyval Blanc E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing.
R Vidal Blanc E-L Stage 1 - 2 Winter bud to Bud scales opening
R Vidal Blanc E-L Stage 1 – 2 Winter bud to Bud scales opening
R Catawba E-L Stage 1 - 2 Winter bud to Bud scales opening.
R Catawba E-L Stage 1 – 2 Winter bud to Bud scales opening.
F Vignoles E-L Stage 1 - 2 Winter bud to Bud scales opening.
F Vignoles E-L Stage 1 – 2 Winter bud to Bud scales opening.
F Chardonel E-L Stage 1 - 2 Winter bud to Bud scales opening.
F Chardonel E-L Stage 1 – 2 Winter bud to Bud scales opening.
F Traminette E-L Stage 1 - 2 Winter bud to Bud scales opening.
F Traminette E-L Stage 1 – 2 Winter bud to Bud scales opening.
F Cayuga White E-L Stage 3 Wooly bud +- green showing.
F Cayuga White E-L Stage 3 Wooly bud +- green showing.
D Concord E-L Stage 1 - 2 Winter bud to Bud scales opening.
D Concord E-L Stage 1 – 2 Winter bud to Bud scales opening.
D Vivant E-L Stage 1 - 2 Winter bud to Bud scales opening.
D Vivant E-L Stage 1 – 2 Winter bud to Bud scales opening.
D Mars E-L Stage 1 - 2 Winter bud to Bud scales opening.
D Mars E-L Stage 1 – 2 Winter bud to Bud scales opening.

Filed Under: Grapes, Phenology

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