Abstract:
Less favorable conditions on
sandy soils in southern Oltenia (Romania)
limited number of species and varieties
grown in the area. Drought and high
temperatures in recent years have acted as
forces dehydrated plants, disturbing their
metabolism.Very high air temperature,
relative humidity decreased to 25%, high
surface temperature and lack of rainfall
during the growing season, producing an
imbalance of fluid balance in plante.
Excessive foliar transpiration level can
dehydrate plants, close osteoles and
diminuted gas exchange in the process of
photosynthesis. Irrigation plants can remove
the stress factor action in the area,
maintaining a positive fluid balance, that
evaporated water is replaced by water
traspiration administered by irrigation. On
the sandy soils plant photosynthesis shows a
depression at noon when the action is the
maximum stress factors. Research early
require selection of species with short
growing season, to avoid atmospheric and
soil drought in July and August. Potatoes
meet these requirements, and research in the
present study we aimed directing
agrotechnical factors (variety, irrigation,
fertilization) in order to obtain high yields
and efficient, in economic terms.
