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What's happening in the field?

At the Missouri State Fruit Experiment Station

Grape phenology and GDD accumulation

May 11, 2015 by Marilyn Odneal

GDD base 50 accumulated since April 1 = 372
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 14 – 15 7-8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
N Norton E-L Stage 14 – 15 7-8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
MVEC Delaware E-L Stage 15-16 8-10 leaves separated; shoots elongating rapidly, single flowers in compact groups.
MVEC Delaware E-L Stage 15-16 8-10 leaves separated; shoots elongating rapidly, single flowers in compact groups.
MVEC Valvin Muscat E-L Stage 15 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
MVEC Valvin Muscat E-L Stage 15 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
MVEC Sunbelt E-L Stage 16 10 leaves separated
MVEC Sunbelt E-L Stage 16 10 leaves separated
MVEC Chambourcin E-L Stage 13-15 6 – 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
MVEC Chambourcin E-L Stage 13-15 6 – 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
W Catawba E-L Stage 15 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
W Catawba E-L Stage 15 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
R Vidal Blanc E-L Stage 11-12 4-5 leaves separated; shoots about 4 inches long
R Vidal Blanc E-L Stage 11-12 4-5 leaves separated; shoots about 4 inches long
R Seyval Blanc E-L Stage 13-14 6-7 leaves separated
R Seyval Blanc E-L Stage 13-14 6-7 leaves separated
R Catawba E-L Stage 14-15 7-8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
R Catawba E-L Stage 14-15 7-8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
F Vignoles E-L Stage 11-13 4-6 leaves separated
F Vignoles E-L Stage 11-13 4-6 leaves separated
Chardonel E-L Stage 13-15 6 – 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
Chardonel E-L Stage 13-15 6 – 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
F Traminette E-L Stage 13-14 6-7 leaves separated
F Traminette E-L Stage 13-14 6-7 leaves separated
F Cayuga White E-L Stage 13-14 6-7 leaves separated
F Cayuga White E-L Stage 13-14 6-7 leaves separated
D Concord E-L Stage 13-15 6 – 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
D Concord E-L Stage 13-15 6 – 8 leaves separated; shoots elongating rapidly, single flowers in compact groups.
D Vivant E-L Stage 12-13 5-6 leaves separated; shoots 4 inches long +; inflorescence clear
D Vivant E-L Stage 12-13 5-6 leaves separated; shoots 4 inches long +; inflorescence clear
D Mars E-L Stage 13-14 6-7 leaves separated
D Mars E-L Stage 13-14 6-7 leaves separated

 

Filed Under: Grapes, Phenology

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