Grape phenology and GDD accumulation

RAIN, RAIN, RAIN (go away!!). We have some cracking in several grape varieties and are worrying about rots. We are also seeing bird depradation in Chardonel, Seyval Blanc and Cayuga White.

The Concord, Catawba and Sunbelt felt less soft than last week, possibly due to the rain.

GDD base 50 accumulated since April 1 = 2025 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

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