Abstract:
Vine varieties react differently
to the influence of environmental factors by
decreasing or significantly intensifying the
vigour of shoot growth, a biological reaction
that also affects fertility and productivity.
This article presents data on some
agrobiological properties (vegetative growth
of shoots, fertility and productivity) of some
white wine varieties, created at the Research
and Development Station for Viticulture and
Vinification (R.D.S.V.V.) Odobești, Vrancea
County, Romania) - Şarba, Băbească gri,
Mioriţa and Vrancea, in the period 2020 -
2021. The data obtained were compared with
the control variety Fetească regală. In
Odobeşti vineyard, 2020 was much warmer
than normal, characterized by a severely
deficient rainfall regime resulting in
atmospheric drought, followed by the gradual
development of pedological drought. The
vigour of shoots was negatively influenced
by the climatic conditions of the vegetation
period in 2020, the highest values being
recorded for the varieties Șarba (159.6 cm)
and Vrancea (141.5 cm), which showed
significant positive differences, compared to
the control variety. The fertility of the buds
was lower in 2020, compared to 2021, the
Vrancea variety being distinguished by higher
potential fertility than the varieties Șarba,
Băbească gri and Miorița, but lower potential
fertility than the control variety. The absolute
fertility coefficient (Cfa) had superunitary
values for all varieties (1.07 - 1.50), and the
relative fertility coefficient (Cfr) had
subunitary values, except for the Vrancea
variety (1.32). The varieties Șarba, Băbească
gri and Miorița achieved an absolute
productivity index (Ipa) superior to the
control variety Fetească regală due to the
higher average weight of the grapes, and the
relative productivity index (Ipr) ranged from
199 for the Vrancea variety to 182 for the
variety Șarba.
