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Archives for April 26, 2021

Grape phenology and GDD accumulation

April 26, 2021 by Marilyn Odneal

GDD base 50 = 93. We track GDD at  http://agebb.missouri.edu/weather/reports/gddTable.asp and rate the phenology stages according to the Modified E-L System http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf After three nights with temperature in the 20s, April 20 to 22, there was damage on the grapes. It was difficult to estimate today, but we think that … [Read more...] about Grape phenology and GDD accumulation

Filed Under: Grapes, Phenology

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  • Grape Phenology and GDD accumulation
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  • Grape Phenology and GDD accumulation

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