Monitoring of Fungicide Use against the Powdery Mildew and Apple Scab in Noncommercial Orchards in Sofias Field

A. Stoev, V. Aleksandrov

Abstract: The most important diseases on apple, reducing the yields from the orchards and aggravating its quality, are apple scab (Venturia inaequalis) and powdery mildew (Podosphaera leucotricha). Against these diseases there are different plant protection products (fungicides) on the market. They have different active substances and different mode of action to the pathogens.
Every one company proposes its product as a solution of the problem caused by mentioned disea-ses but fungicide use is under the requirements concerning not only the efficacy to the target but also the safety for people, animals and environment.
The paper presents results of one monitoring of fungicide use realized during the period October 2012 – September 2013. The results after fungicide treatment on apple trees of different cultivars were registered. The conclusion based on the results obtained is that the number of chemical treatment could be minimized vastly. The main conditions for minimizing are: use in the appropriate phenological phase, planting of cultivars resistant to pathogens and prevention against the initial infection.

Keywords: apple scab; fungicides; powdery mildew

Date published: 2017-02-13