Catawba grapes are one of our hardier grape varieties, so we prune them earlier in the dormant season than the more cold tender varieties. We started pruning Monday, November, 28th. Based upon suggested pruning formulas and pruning weights we are leaving 20 buds this year. Pruning weight was down from last year in the research vineyard, in part because it is and older … [Read more...] about Pruning Catawba Grapes
GDD base 50 = 3795. 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 This is the last post for the season. We had 3795 GDD since April 1, 2022. … [Read more...] about Grape phenology and GDD accumulation
GDD base 50 = 3766. 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.pdf … [Read more...] about Grape Phenology and GDD accumulation
GDD base 50 = 3721. 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.pdf All grapes have been harvested except Norton Photos to follow... … [Read more...] about Grape Phenology and GDD accumulation
GDD base 50 = 3678. 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.pdf … [Read more...] about Grape Phenology and GDD accumulation