Gveroska, Biljana (2020) TRICHODERMA BIOCONTROL AGENTS FOR TOBACCO SEEDLINGS PROTECTION. Global studies of tobacco, tobacco products, and innovative nicotine-containing products: status and perspectives I International scientific conference 2020. pp. 155-165. ISSN 978-5-93491-867-6

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Abstract. Tobacco production has intentions to introduce a biological control as contemporary and environmentally friendly plant protection measure.
Rhizoctonia solani is a very destructive pathogen, the causing agent of damping off in tobacco seedlings. Application of biological control is a good way of control, according to all moments that make difficulties in control of this pathogen. Biocontrol activity of some Trichoderma species - T. aureoviride, T. hamatum and T. harzianum was investigated in vitro - by dual culturing technique and in vivo – in greenhouse.
All the three species show the high antagonistic potential and percentage inhibition of radial growth of the pathogen, but the highest value is in T. harzianum. In conditions of artificially inoculation with the pathogen, the intensity of a disease was reduced applying the investigated biocontrol agents.
T. harzianum has the best reducing effect on the damping off in all application ways of this biocontrol agent. The intensity of disease was only 5.56% in the application 15 days after sowing, while in the application before sowing and mixed with seeds, there was no disease incidence.
Application of Trichoderma by treatment of seed has confirmed as the best application way of the biocotrol agents.
Biocontrol activity of these Trichoderma species enables them to be used in the biological control against R. solani in tobacco seedling protection.
Keywords. Biological control, Rhizoctonia solani, Trichoderma aureoviride, Trichoderma hamatum, Trichoderma harzianum, atagonistic potential, control.

Item Type: Article
Subjects: Scientific Fields (Frascati) > Agricultural Sciences > Other agricultural sciences
Divisions: Scientific Tobacco Institute
Depositing User: Prof d-r. Biljana Gveroska
Date Deposited: 17 Nov 2022 10:42
Last Modified: 17 Nov 2022 10:42

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