Grape phenology and GDD accumulation

Harvest is finally complete!

GDD base 50 accumulated since April 1 = 3435 (October 31) http://agebb.missouri.edu/weather/reports/gddTable.asp

This is -144 GGD base 50 from average.

Phenology recorded and photographed on November 4.
Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf

A quick visual assessment of cane lignification (good – 90 – 100%+; fair – 50 – 90%+; poor – 50% or less) was made and is as follows: Traminette – good/fair; Concord – good; Sunbelt – good; Norton – good/fair; Chambourcin – fair; Valvin Muscat – fair; Wets Catawba – good; Vignoles – poor; Cayuga White – poor; Vidal Blanc – poor; Seyval Blanc – poor; Research Catawba – good; Chardonel – good; Vivant – poor (overcropped in demo vineyard).

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