Joint International Conference on Long-term Experiments ...

1.1.3 Viticultural region Banat Crisana
Annual thermic regime was slowly in excess (an annual average temperature of 13,0 o C) and
slowly reduced during vine vegetation period (April – September average values of
19,1 o C). Haighest thermic value was recorded in July ( 39,1 o C), from June till September
the temperature values being over 30 o C, slowly affecting the photosynthetical process at a
foliar level. The lowest thermic value was recorded in January ( –15,1 o C), negative
temperature being recorded from October till March, but the fruit buds were not affected.
Buds viability was slowly affected in depressionary areas, without significant losses.
Thermic accumulation from the standard vegetation period (April – September) favourised
in a certain amount sugars accumulation, stopped by the highest temperature values from
the vegetation period.
Insolation value was close to normal, the photosynthetic process and the crop quality
not being disturbed. From a hydrological point of view, there was a surplus of moisture
content, favourising cryptogamic diseases. Normal humidity values were recorded in July-
August, favourising grape maturation.
As for the rainfall regime, according to the real evaporation, 2006 had higher amounts,
a hydrological deficit being recorded in July, September and October.
The dangerous winter conditions recorded were hoar-frost, block frost and white frost.
Hoar-frosts were recorded from October (4 days) to March (1 day), block and white frost
being recorded in December (1 day) and February (3 days). Among the worm season
conditions there were recorded 2 cases of hail-storm in June and strong wind weather, even
stormy weather in April and June.
1.1.4 Viticultural region Colinele Dobrogei
Examining the thermic regime of 2005-2006 viticultural year, we can say that its values
were higher than the average multi-annual values. Thus, during the vegetative rest period,
November, December and January had an average monthly temperature higher than
normal, and during the vegetation period, from April to January, all months had higher
temperature values than normal, the difference ranging from 0,7 0 C in April (lowest) to
3,7 0 C in August (highest).
During summer the highest temperature recorded was between 33,0 0 C and 36,0 0 C,
stimulating the vegetative raise of the vines, on the background of the massive rainfalls
from the second part of summer.
We can conclude that the 2005-2006 viticultural year, vine took advantage from a
more effective thermic regime than the average, leading to a superior viticultural
production, mostly in quantity and less in quality, due to the reduced number of days with
sunshine. Regarding the pluviometric regime, we can mention the lower rainfall amounts in
June, a situation that created a strong hydrological pressure in the plantation, irrigations
being mandatory. But the amount of rainfalls in July, August and September solved the
problem. The relative air humidity was of 85%, higher than the average 73%, influencing
and favourising cryptogamic disease attacks on vine, especially mildew on sensitive sorts,
but also blast and botrytis on the other sorts.
1.1.5 Viticultural region of Muntenian and Oltenian Hills
Analysing viticultural year 2005-2006 (October 2005- September 2006) we find average
temperature values higher than normal and less rainfalls, leading to an extension of vine
shoot maturation and a delay of the relative rest of the vine (fig. 1).
The reduced amount of rainfalls in May (16,4 mm, compared to the average of 60,1 mm)
and the lower thermic regime continued to have a negative influence on plant development.
Blooming started late (16 th - 19 th of June) and lasted till the end of the month. The rains
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