THE INVESTIGATIONS OF FUNGICIDE EFFECT OF SOME CHEMICALS ON THE PATHOGEN PYTHIUM DEBARYANUM HESSE AT IN VITRO CONDITIONS

Tashkoski, Petre and Gveroska, Biljana (2009) THE INVESTIGATIONS OF FUNGICIDE EFFECT OF SOME CHEMICALS ON THE PATHOGEN PYTHIUM DEBARYANUM HESSE AT IN VITRO CONDITIONS. Tobacco, 59 (5-6). pp. 128-135. ISSN 0494-3244

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Abstract

P. debaryanum, the causing agent of damping off in seedlings grows very well in potato dextrose agar (PDA). The maximum growth in the check and in some other fungicides investigated was attained on the third day of incubation, when Petri dishes were completely filled with mycelium. Chemicals Top M, Benomil, Quadris and Enovit applied in concentration of 0.1% showed to be ineffective in the control of this pathogen. Certain effectiveness was attained with three other fungicides: Previcur 0.2%, Merpan 0.1% and Pilarich 0.2%. The effectiveness achieved with Merpan was 75.10% in Investigation III, 76.37% in Investigation II, 78.55% in Investigation I and 80.46% in Investigation IV. The effectiveness of Previcur ranged between 53.10% in Investigation I and 69.46% in Investigation II. The lowest effectiveness was obtained with Pilarich, reaching 23.64% and 33.64% in Investigation III and Investigation IV respectively. 100% effectiveness in all investigations was obtained with Ridozeb WP, applied in concentration of 0.1%. No mycelium growth was noticed in nutrient medium treated with this chemical in replications included in this trial. Accordingly, Ridozeb WP can find practical application in control of tobacco seedlings from damping off disease caused by the pathogenic fungus P. debaryanum.

Item Type: Article
Subjects: Scientific Fields (Frascati) > Agricultural Sciences > Agriculture, forestry and fisheries
Divisions: Scientific Tobacco Institute
Depositing User: Ms Biljana Jordanoska
Date Deposited: 03 Nov 2016 20:48
Last Modified: 03 Nov 2016 20:48
URI: http://eprints.uklo.edu.mk/id/eprint/395

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