512 coordinate intersections...
Build 4 sets of vineyards near coordinates = 4 grape types per vintage, per site?
test site near rsd 2560, 1536
Planted Old Tawny 12.30pm 5/6/05 Fert 12.30 Fert 6.35 (partial 5 fert) Fert and cutting 7.45
Harvest 1 from each area
Tawny