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Featured researches published by V. Oprea.


Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture | 2008

VALORIFICATION OF DISINTEGRATED LANDS FROM TRANSYLVANIA THROUGH CULTIVATION OF HIPPOPHAE RHAMNOIDES

Ioan Pacurar; Doina Clapa; Dan Veverca; Marcel Dirja; Teodor Rusu; Nicolae Pop; V. Oprea; Mihai Buta

The Transylvanian hillock area is geographical characterised through a wave like landscape, sunny slopes with no forest vegetation, frequently exposed to different forms of erosion. The pedogenetical cover on these slopes are represented by regosoils, erodisoils, soils with low trophicity, for agricultural usage. A very well adapted specie for these conditions is Hippophae rhamnoides. Hippophae rhamnoides is considered to be one of the most valuable specie of brushes from our spontaneous and cultivated flora, appreciated in different domains such as pharmacology, food industry, animal feeding, forestry and even in landscaping. Its fruits contain over 20 substances with an important role in the regularization of the metabolism of the humans, having both a therapeutical and curative role in preventing and treating eye diseases, skin problems, avitaminoses, diseases of the neural system, endocrine system etc. It is a unisex dioical plant, of 1,5-3,5 m (in some areas can reach up to 8-10 m). It produces fruits after three years from planting and it has a biological life of 18-20 years. It is a plant with a high adaptability, being one of the best colonizing plants. It valorizes the lands with different types of soil, wet and dry, with different textures (from sandy to clay), especially the sands from the river banks. With a powerful root system, it expands rapidly as it rots can go up to 20 m. The planting distance is 3x2m, in the plain conducting way, or 3,5x2,5 m in the classical conducting way. For polenisation at planting, one must respect the percent of 1 male plant to 6-8 female plants. It has a very high growth in the years 3-5 when it produces great amounts of branches, and having a production of 3-12tones/ha, and at maximum it has a production of 25 tones/ha.


Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca | 2012

Differentiated fertilization technologies in nurseries for common oak culture.

Sabin RareÅŸ Man; Ioan Oroian; Adriana Man; V. Oprea


Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture | 2009

The Opportunity of Using Forest Trees and Shrubs on the Degraded Soils from the Transylvanian Hill Area in the Actual Romanian Legislative Context

V. Oprea; Gheorghe Blaga; Ioan Pacurar; Eniko Kovaks; Sabin R. Man; Radu M. Gorgan


Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture | 2009

The Ecological Reconstruction of the Degraded Terrains from the Transylvanian Hill area through the Cultivation of the Silvo-Ameliorative Shrubs

V. Oprea; Blaga Gheorghe; Ioan Pacurar; Eniko Kovaks


Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture | 2008

Valorification of acid soils from Transylvania using high bush blueberry (Vaccinium corymbosum).

Ioan Pacurar; Doina Clapa; Dan Veverca; Marcel Dirja; Teodor Rusu; Nicolae Pop; V. Oprea; Mihai Buta


Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca | 2007

Study regarding the carbonatical soils from the Transylvanian depression formed on the eocinical deposits of numulits.

Ioan Pacurar; V. Bunescu; M. Darja; Doina Clapa; Liviu Holonec; V. Oprea


Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca | 2007

STUDY REGARDING THE HYDROLOGY AND HYDROLOGY FROM THE DIDACTIC FARM COJOCNA-THE TRANSYLVANIAN PLAINS

Mihai Buta; Gheorghe Blaga; Ioan Păcurar; Laura Paulette; V. Oprea; Mihaela Mărginean; Ioana Cătinaş; Erzsebet Csok


Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca | 2007

Study regarding the situation of the terrains affected by different forms of erosion in the Transylvanian hillock area.

Ioan Pacurar; M. Darja; Doina Clapa; I. Taut; I. Covrig; V. Oprea; Mihai Buta


Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca | 2007

30 YEARS OF RESEARCHES IN THE DOMAIN OF REFARMING THE DEGRADED TERRAINS RESULTED FROM THE SURFACE MINE EXPLOITATIONS FROM TRANSYLVANIA

Gh. Blaga; V. Bunescu; M. Dumitru; M. Nastea; E. Rauta; R. Vilian; Ioana Catinas; Doina Clapa; Ioan Pacurar; Laura Paulette; L. Blaga; M. Drasan; Mihaela Marginean; Mihai Buta; V. Oprea


Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca | 2007

CONTRIBUTIONS TO THE KNOWLEDGE OF THE HISTOSOILS FROM THE SEBESEL’S SUPERIOR BASIN

Ioan Pacurar; M. Darja; Liviu Holonec; Doina Clapa; V. Oprea; Mihai Buta

Collaboration


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Ioan Pacurar

University of Agricultural Sciences

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Mihai Buta

University of Agricultural Sciences

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Doina Clapa

University of Agricultural Sciences

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Ioan Păcurar

University of Agricultural Sciences

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Liviu Holonec

University of Agricultural Sciences

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Gheorghe Blaga

University of Agricultural Sciences

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M. Darja

University of Agricultural Sciences

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Eniko Kovaks

University of Agricultural Sciences

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Ioana Cătinaş

University of Agricultural Sciences

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Laura Paulette

University of Agricultural Sciences

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