What's happening in the field?

At the Missouri State Fruit Experiment Station

Grape Phenology and GDD accumulation

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GDD base 50 = 1171. We track GDD at http://agebb.missouri.edu/weather/reports/gddTable.asp and rate the phenology stages according to the Modified E-L System https://door.extension.wisc.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf 

 

Norton North E-L Stage 33 Berries still hard and green
Demo Mars E-L Stage 33 Berries still hard and green
Demo Concord E-L Stage 33 Berries still hard and green
Foundation Vivant E-L Stage 33 Berries still hard and green
Foundation NC-6 E-L Stage 31 Berries pea-size (7 mm diam.)
Foundation Norton E-L Stage 32 Beginning of bunch closure, berries touching
(if bunches are tight)
Foundation Vignoles E-L Stage 32-33 Beginning of bunch closure, berries touching (if bunches are tight) to Berries still hard and green
Foundation Chardonel E-L Stage 33 Berries still hard and green
Foundation Vidal Blanc E-L Stage 32 32 Beginning of bunch closure, berries touching
(if bunches are tight)
Foundation Chambourcin E-L Stage 33 Berries still hard and green
MVEC Chambourcin E-L Stage 31 Berries pea-size (7 mm diam.)
MVEC Sunbelt E-L Stage 33 Berries still hard and green
Genomics Norton E-L Stage 32 Beginning of bunch closure, berries touching (if bunches are tight)
Genomics NC-6 E-L Stage 18-19 14 leaves separated; flower caps still in place, but cap colour fading from green to About 16 leaves separated; beginning of flowering (first flower caps loosening)
Winery Catawba E-L Stage 31 Berries pea-size (7 mm diam.)
Winery Chardonel E-L Stage 19 About 16 leaves separated; beginning of
flowering (first flower caps loosening)
New Winery Chambourcin E-L Stage 32 Beginning of bunch closure, berries touching (if bunches are tight)
New Winery Norton E-L Stage 31 Berries pea-size (7 mm diam.)
Research Seyval Blanc E-L Stage 18 14 leaves separated; flower caps still in place,
but cap colour fading from green
Research Catawba E-L Stage 33 Berries still hard and green
Research Norton E-L Stage 33 Berries still hard and green
Foundation Cayuga White E-L Stage 33 Berries still hard and green
Foundation Traminette E-L Stage 19 About 16 leaves separated; beginning of flowering (first flower caps loosening)