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What's happening in the field?

At the Missouri State Fruit Experiment Station

Grape Phenology and GDD accumulation

July 31, 2023 by Jennifer Morganthaler

GDD base 50 = 2099. 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.pd

Research Norton E-L Stage 33 Berries still hard and green
North Norton E-L Stage 33 Berries still hard and green
MVEC Sunbelt E-L Stage 35 Berries begin to colour and enlarge
Genomics Norton E-L Stage 33 Berries still hard and green
Foundation Norton E-L Stage 34-35 Berries begin to soften;
Sugar starts increasing to Berries begin to colour and enlarge
Demo Mars E-L Stage 35 Berries begin to colour and enlarge

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