Top Grafting
In 2001 we top grafted a portion of Dollahide Ranch’s parcel
20 to Malbec and we’ve been delighted with the results, so
we’re starting to do more. Top grafting lets us change the
varietal that’s grown in a parcel without doing a complete
vineyard replant. We take off the top of the vines about eighteen
inches from the soil, then graft on the new grape variety at that
spot. Since the diameters of the mature vine and the graft are significantly
different, it takes a highly experienced technician to do the procedure.
Honestly, there are people in the wine industry that specialize
in top grafting for a living. They are in high demand. Topgrafted
vines are typically cane pruned, as it’s difficult make cordons
from the graft.
Why top graft?
One reason is to apply accumulated knowledge about one’s own
vineyard. Over time, we learn what works and what doesn’t
work in certain parts of each vineyard, and we may find that our
initial plan wasn’t as good as it could have been. For example,
there are areas of Dollarhide with very rich soils and other
areas with poorer soils. We had planted Merlot in some of the low–nutrient
soils, but found that we would have made a better choice to plant
Sauvignon Blanc which absolutely loves Dollarhide regardless
of what parcel it’s in. We have done some trials of top grafting
Merlot to Sauvignon Blanc and have had great results. That Sauvignon
Blanc at Dollarhide…happy as a duck in water. Another reason
we top graft relates to demand for our wines. The increase in demand
for Élu has prompted us to plant Malbec to give us
all five Bordeaux Red varieties to include in that wine.
Pomace
Composting
During harvest, the winery creates a lot of compostable material
in the form of stems, grape seeds, and grape skins (we call this
mixture pomace). Historically, we had sold this material to a composting
company, but starting with the 2002 vintage, we’re keeping
our goodies in-house. We are now trucking our pomace from the winery
to the vineyards for composting and eventual fertilization of nutrient-poor
soils.
We truck the pomace to an area of fallow ground and let nature do
its work. It’s really amazing to see how hot these piles of
spent grape material get when they’re naturally breaking down.
The interiors of the pilesm get become almost too hot to touch.Top
Grafting (probably save this for another month)
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