Missouri State University
At the Missouri State Fruit Experiment Station

Author Archives: Marilyn Odneal

Grape phenology and GDD accumulation

GDD base 50 accumulated since April 1 = 89 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 Most grapes were at the wooly bud stage. The cultivars furthest along included Delaware, Valvin Muscat and Concord since they were …

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