Study concerning Tortrix viridana attack on oak forests from Transylvanian Private Forest Districts

Romica TOMESCU, Ioan TAUT, Ilie COVRIG, Vasile SIMONCA

Abstract


Tortrix viridana L. is an important pest for the oak forests, and this problem is also encountered in Transylvania. The objective of our study was to identify the degree of foliar infestation with Tortrix viridana L. in oak, degree of oak defoliation and possible correlation between these two parameters, in managerial context of forests private districts and climatic conditions of Transylvania. The study was conducted in 6 Private Forest Districts from Transylvania, located in the counties of Bistrita, Cluj, Satu Mare, Mures, Salaj, and Bihor. The degree of foliar infestation with Tortrix viridana L. in oak, degree of oak defoliation within studied areal was in normal limits, and strong to very strong correlations were emphasized between these two parameters.


Keywords


correlation, infestation, forest management, infestation

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