Laetitia
Porgès
Fruit
and juice quality of several grape cultivars and distribution of the
grapes on the vinestocks
The work carried out by Laetitia
Porgès as part of the
laboratory’s vineyard project consists in analysing the must quality
of grapes sampled during the 2000 harvest on the Frelighsburg
Experimental Farm, and assessing the distribution of the grape crop.
A
three-part qualitative analysis will be carried out on each sample:
1. total
acidity
2. soluble
solids (refractometer)
3. colour
(Pantone-type scale).
The
results of the analysis will be used to estimate grape maturity dates
for each grape cultivar.
The
second stage takes place in the field: a distribution scale has been
defined (from 0 for no clusters to 3 for most of crop), and each
vinestock is scored at five levels (from ground level to the top).
Producers are very keen to have the findings of this research because
the farther apart the grapes are, the more labour is required to
harvest them.
Data collection
is under way, more than 200 samples from three sampling dates have
already been analysed, and field observations are almost over. The
study is expected to be completed by the end of August.
Address:
Laetitia Porgès
Student at L'Institut
National d'Horticulture
2, rue Le Nôtre
49045 ANGERS
FRANCE
- The
persons in charge of the training course: Shahrokh Khanizadeh &
Johanne Cousineau
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