| Sumario: | The aim of this work was to evaluate
changes in growth and productivity parameters
of different precocious hybrids and a naturalized
variety of papaya under both greenhouse and
field cultivation in a temperate climate (the
center of the province of Santa Fe, Argentina).
In view of the aforesaid, the purpose of our
research was to identify further genotypes
better suited for the cultivation of this species
in temperate climates and demonstrate the
need for the use of semi-controlled systems to
make possible the cultivation of these promising
genotypes in middle latitudes. The average
yield was 291% higher in greenhouse than in
the field. The average productivity for hybrid
genotypes compared with the naturalized
variety more than doubled in both environments.
Considering behavior in height, leaf area index
and yield parameters, hybrids H2 (principally),
and H4 showed a great adaptation for use in
semi-forced systems. The use of greenhouse
and short stature papaya hybrids allows its
feasible and surely profitable cultivation in
non- tropical climates.
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