Grape phenology and GDD accumulation April 1, 2019 by Marilyn OdnealIt is the first of April when we begin recording GGD base 50 and track grapevine development. GDD base 50 accumulation for today = 0 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 1. N Norton E-L Stage 1 Winter Bud 2. G Norton E-L Stage 1 Winter Bud 3. G Cabernet Sauvignon E-L Stage 1 Winter Bud 4. MVEC Sunbelt E-L Stage 1 – 2 Winter Bud to Bud scales opening 5. MVEC Chambourcin E-L Stage 1 Winter Bud 6. W Catawba E-L Stage 40 Harvested. 7. NWV Chardonel E-L Stage 1 Winter Bud 8. NWV Chambourcin E-L Stage 1 Winter Bud 9. R Seyval Blanc E-L Stage 1 Winter Bud 10. R Catawba E-L Stage 1 Winter Bud 11. R Norton E-L Stage 1 Winter Bud 12. F Norton E-L Stage 1 Winter Bud 13. F Vignoles E-L Stage 1 Winter Bud 17. F Cayuga White E-L Stage 1 – 2 Winter Bud to Bud scales opening 14. F Chardonel E-L Stage 1 Winter Bud 15. F Traminette E-L Stage 1 Winter Bud 16. F Vidal Blanc E-L Stage 1 Winter Bud 18. D Concord E-L Stage 1 – 2 Winter Bud to Bud scales opening 19. D Vivant E-L Stage 1 – 2 Winter Bud to Bud scales opening 20. D Mars E-L Stage 1 – 2 Winter Bud to Bud scales opening
GDD base 50 accumulation for today = 0 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 1. N Norton E-L Stage 1 Winter Bud 2. G Norton E-L Stage 1 Winter Bud 3. G Cabernet Sauvignon E-L Stage 1 Winter Bud 4. MVEC Sunbelt E-L Stage 1 – 2 Winter Bud to Bud scales opening 5. MVEC Chambourcin E-L Stage 1 Winter Bud 6. W Catawba E-L Stage 40 Harvested. 7. NWV Chardonel E-L Stage 1 Winter Bud 8. NWV Chambourcin E-L Stage 1 Winter Bud 9. R Seyval Blanc E-L Stage 1 Winter Bud 10. R Catawba E-L Stage 1 Winter Bud 11. R Norton E-L Stage 1 Winter Bud 12. F Norton E-L Stage 1 Winter Bud 13. F Vignoles E-L Stage 1 Winter Bud 17. F Cayuga White E-L Stage 1 – 2 Winter Bud to Bud scales opening 14. F Chardonel E-L Stage 1 Winter Bud 15. F Traminette E-L Stage 1 Winter Bud 16. F Vidal Blanc E-L Stage 1 Winter Bud 18. D Concord E-L Stage 1 – 2 Winter Bud to Bud scales opening 19. D Vivant E-L Stage 1 – 2 Winter Bud to Bud scales opening 20. D Mars E-L Stage 1 – 2 Winter Bud to Bud scales opening
GDD base 50 accumulation for today = 0 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 1. N Norton E-L Stage 1 Winter Bud 2. G Norton E-L Stage 1 Winter Bud 3. G Cabernet Sauvignon E-L Stage 1 Winter Bud 4. MVEC Sunbelt E-L Stage 1 – 2 Winter Bud to Bud scales opening 5. MVEC Chambourcin E-L Stage 1 Winter Bud 6. W Catawba E-L Stage 40 Harvested. 7. NWV Chardonel E-L Stage 1 Winter Bud 8. NWV Chambourcin E-L Stage 1 Winter Bud 9. R Seyval Blanc E-L Stage 1 Winter Bud 10. R Catawba E-L Stage 1 Winter Bud 11. R Norton E-L Stage 1 Winter Bud 12. F Norton E-L Stage 1 Winter Bud 13. F Vignoles E-L Stage 1 Winter Bud 17. F Cayuga White E-L Stage 1 – 2 Winter Bud to Bud scales opening 14. F Chardonel E-L Stage 1 Winter Bud 15. F Traminette E-L Stage 1 Winter Bud 16. F Vidal Blanc E-L Stage 1 Winter Bud 18. D Concord E-L Stage 1 – 2 Winter Bud to Bud scales opening 19. D Vivant E-L Stage 1 – 2 Winter Bud to Bud scales opening 20. D Mars E-L Stage 1 – 2 Winter Bud to Bud scales opening