GDD base 50 accumulated since April 1 = +3950 (+443 departure from normal) at Mountain Grove http://agebb.missouri.edu/weather/reports/gddTable.asp
March 2012 GDD base 50: 306+3950 = 4256
Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf
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- R Seyval Blanc E-L Stage 40
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- R Catawba E-L Stage 40
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- F Chardonel E-L Stage 40
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- N Traminette E-L Stage 41
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- N Concord E-L Stage 41
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- N Sunbelt E-L Stage 41
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- N Norton E-L Stage 41
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- MVEC Chambourcin E-L Stage 40
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- W Catawba E-L Stage 40
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- R Vignoles E-L Stage 41
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- R Cayuga White E-L Stage 41
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- R Vidal Blanc E-L Stage 40
