The Phytosanitary Risk Analysis against Phytophtora Cactorum (Lebert & Cohn) Schröt. in Fagus Sylvatica L. Seedlings

Ilie Covrig, Ioan Oroian, Antonia Odagiu

Abstract


The risk analysis is a useful process, at national level in assessing possible dangerous issues. Part of larger concept of risk analysis, the pest risk analysis is performed according to International Plant Protection Convention (IPPC) principles. Performed in order to assess pathogen control of forest trees, it supplies a new perspective in the control of concerned diseases. The aim of our paper is to implement the steps of risk analyses conducted according to IPPC principles for Phytophtora cactorum (Lebert & Cohn) Schröt. attack against beech trees from a nursery in Transylvanian climatic conditions, and to emphasize the results of this approach. The initiation stage includes the following issues: motivation of analysis, targeted pathogen (P.cactorum), and area of interest (nursery with 50 beech seedlings located in Superior Basin of Niraj, respectively, the Forest Office of Sovata, county of Mureş, Romania). The assessment stage includes: pest characterization and determination of attack degree (average values between 19.49% in 2011, and 21.77% in 2012). The management stage includes: monitoring, and sanitary decisions treatment with mefenoxam and phosphate, but also biological treatment or using soil amendments as biochair). The implementation of the pest risk analyze within a multi-annual experiment, emphasize its usefulness by capacity of documentation on a reliable database, and as consequence formulation of most efficient managerial solutions in order to minimize the pathogen attack.


Keywords


attack degree, beech, late blight, multiregression analysis.

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