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The Province of Mendoza is located in the Mid-Western part of Republica Argentina with an extension of 150.830 km(2). There all agrarian and forestry activities are concentrated in a 3% of its territory which is able to be irrigated. On the West side part of the province by the border with Republic of Chile appears the mountain ridge (Cordillera de Los Andes) which is a part of the fitogeographical region called Andinian Desert. It extents for over 500 km with an average wide of 100 km.

This work was aimed to evaluate survival and behaviour of different provenience of Pinus nigra in the mountainous country side of Mendoza. To do so there was installed an experimental plot in Yaucha dam, placed in San Carlos department at 34 degrees 00’ S and 69 degrees 07’ W, at an altitude of 1.213 mosl.

Proveniences on test were Pinus nigra var. clusiana (France), Pinus nigra var. austriaca (Livo - Italy), Pinus nigra var. austriaca (Lasa - Italy), Pinus nigra var. knin (ex Yugoslavia) y Pinus nigra var. pyramidalis (Turkey). For the experience were used plants of approximately 0.30m height and were installed at a definite plantation distance of 3 x 3 m whit surface irrigation stream water by furrows. Periodically, dasometric data is taken about diameter, chest height of every plant, total average height of trees of each provenience, registering failures and sanitary situation. Results obtained at the age of 17 years are: Pinus nigra var. clusiana (Francia): dbh 12,1 cm, height 5.2 m and 10% failures; Pinus nigra var. austriaca (Livo - Italia): dbh 13 cm, height 4.6 m and 25% failures; Pinus nigra var. austriaca (Lasa - Italia): dbh 13,9 cm, height 5.60 m y 0% failures; Pinus nigra var. knin (ex Yugoslavia): dbh 14,1 cm, height 6.2 m and 15% failures and Pinus nigra var. pyramidalis (Turquia): dbh 11,6 cm, height 5,8 m and 40% failures.

All provenience are in good sanitary shape not registering any pests or diseases affecting the experiment up to date.