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What's happening in the field?

At the Missouri State Fruit Experiment Station

Grape phenology and GDD accumulation

May 1, 2017 by Marilyn Odneal

GDD base 50 accumulation since April 1 = 253.   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 12 – 14 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
N Norton E-L Stage 12 – 14 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
G Norton E-L Stage 12 - 14 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
G Norton E-L Stage 12 – 14 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
G Cabernet Sauvignon E-L Stage 12 5 leaves separated; shoots about 10cm long; inflorescence clear.
G Cabernet Sauvignon E-L Stage 12 5 leaves separated; shoots about 10cm long; inflorescence clear.
MVEC Delaware E-L Stage 14 7 leaves separated.
MVEC Delaware E-L Stage 14 7 leaves separated.
MVEC Valvin Muscat E-L Stage 14 - 16 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups to 10 leaves separated.
MVEC Valvin Muscat E-L Stage 14 – 16 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups to 10 leaves separated.
MVEC Sunbelt E-L Stage 14 - 15 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups
MVEC Sunbelt E-L Stage 14 – 15 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups
MVEC Chambourcin E-L Stage 12 - 13 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated.
MVEC Chambourcin E-L Stage 12 – 13 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated.
W Catawba E-L Stage 12 - 13 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated.
W Catawba E-L Stage 12 – 13 5 leaves separated; shoots about 10cm long; inflorescence clear to 6 leaves separated.
NWV Arandel E-L Stage 13 - 15 6 leaves separated to 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups.
NWV Arandel E-L Stage 13 – 15 6 leaves separated to 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups.
NWV Aromella E-L Stage 13 - 15 6 leaves separated to 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups.
NWV Aromella E-L Stage 13 – 15 6 leaves separated to 7 leaves separated to 8 leaves separated, shoot elongating rapidly; single flowers in compact groups.
R Seyval Blanc E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
R Seyval Blanc E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
R Catawba E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
R Catawba E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
F Vignoles E-L Stage 11 - 12 4 leaves separated to 5 leaves separated; shoots about 10cm long; inflorescence clear.
F Vignoles E-L Stage 11 – 12 4 leaves separated to 5 leaves separated; shoots about 10cm long; inflorescence clear.
F Chardonel E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
F Chardonel E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
F Traminette E-L Stage 12 - 13 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated.
F Traminette E-L Stage 12 – 13 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated.
F Cayuga White E-L Stage 13 – 14 6 leaves separated to 7 leaves separated.
F Cayuga White E-L Stage 13 – 14 6 leaves separated to 7 leaves separated.
D Concord E-L Stage 12 - 13 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated.
D Concord E-L Stage 12 – 13 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated.
D Vivant E-L Stage 12 - 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
D Vivant E-L Stage 12 – 14 5 leaves separated; shoots about 10 cm long; inflorescence clear to 6 leaves separated to 7 leaves separated.
D Vidal Blanc E-L Stage 11 4 leaves separated.
D Vidal Blanc E-L Stage 11 4 leaves separated.
D Mars E-L Stage 13 - 14 6 leaves separated to 7 leaves separated.
D Mars E-L Stage 13 – 14 6 leaves separated to 7 leaves separated.


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