Grape phenology and GDD accumulation

April 1, 2019 by Marilyn Odneal

It 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 — 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 — 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 — 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 — 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 — 20. D Mars E-L Stage 1 – 2 Winter Bud to Bud scales opening

Discover more from What's happening in the field?

Subscribe to get the latest posts sent to your email.