n raspberry plantations it is well known that the blight of the raspberry stalk produced by the fungus Didymella applanata could bring sometime quite significant losses. It is necessary to consider that the attack results in complete raspberry stem necrosis of the infected plants in one to three years after infection. Once the attack has started, in the absence of a treatment, the stem dries out over a period of time which length varies depending on climatic conditions and the number of wounds on the stem, which occur accidentally or because of a pest attack. This paper is based on the results of assessments conducted between 2018-2021 on several populations of wild raspberries in the mountainous area located between the north of the city of Anina and the Cheile Nerei area. In the present paper we wanted to highlight the fact that the pathogen has natural resources and this practically explains the need for a permanent evaluation of it in raspberry plantations. Observations concerning the dynamics of the pathogen were carried out directly on the locations and point out a climatic dependence of the pathogen. They show that the years in which during the period April-October there were moderate temperatures and sufficient rainfall were those in which most infected plants were recorded.

Rubus idaeus, Didymella applanata

agronomy

Presentation: poster