Articles
Biocontrol potential of Trichoderma viride against main phytopathogenic fungi associated with Capsicum peppers cultivated in IPM system
Article number
1391_55
Pages
401 – 406
Language
English
Abstract
Diseases caused by fungi are the main causes of yield losses in agriculture.
Fungi are responsible for numerous plant diseases and their infections can occur in the field and affect the fruits.
The use of specific microorganisms for the control of pathogens and plant pests is an environmentally friendly approach to overcoming the inconveniences caused by the excessive use of chemical pesticides.
The study aimed to assess the occurrence of fungi responsible for field losses in peppers cultivated in IPM system and also the biological control capacity of one Trichoderma viride Tv20 strain against the main phytopathogens associated with pepper crop during pre-harvest period.
A relatively high fungal diversity was observed across the analyzed pepper samples.
A total of 35 fungal strains belonging to 10 genera were isolated from the pepper fruits, Alternaria alternata, Alternaria solani, Colletotrichum spp., Fusarium solani, Fusarium equiseti and Fusarium oxysporum being the predominated species.
The T. viride Tv20 strain exerted antagonistic activity against the selected phytopathogenic fungi, limiting their growth and development.
The most pronounced inhibitory action was against Colletotrichum species in a percentage of 49.10-61.30%. Alternaria species were inhibited by 38.23-60.71%, while Cladosporium spp. was limited from 44.82 to 53.76%. The species of F. solani, F. oxysporum and Fusarium sp. were inhibited in a percentage between 26.07 and 47.94%. The use of biological control in management disease system is a viable alternative to limit the incidence of contaminating microorganisms.
Fungi are responsible for numerous plant diseases and their infections can occur in the field and affect the fruits.
The use of specific microorganisms for the control of pathogens and plant pests is an environmentally friendly approach to overcoming the inconveniences caused by the excessive use of chemical pesticides.
The study aimed to assess the occurrence of fungi responsible for field losses in peppers cultivated in IPM system and also the biological control capacity of one Trichoderma viride Tv20 strain against the main phytopathogens associated with pepper crop during pre-harvest period.
A relatively high fungal diversity was observed across the analyzed pepper samples.
A total of 35 fungal strains belonging to 10 genera were isolated from the pepper fruits, Alternaria alternata, Alternaria solani, Colletotrichum spp., Fusarium solani, Fusarium equiseti and Fusarium oxysporum being the predominated species.
The T. viride Tv20 strain exerted antagonistic activity against the selected phytopathogenic fungi, limiting their growth and development.
The most pronounced inhibitory action was against Colletotrichum species in a percentage of 49.10-61.30%. Alternaria species were inhibited by 38.23-60.71%, while Cladosporium spp. was limited from 44.82 to 53.76%. The species of F. solani, F. oxysporum and Fusarium sp. were inhibited in a percentage between 26.07 and 47.94%. The use of biological control in management disease system is a viable alternative to limit the incidence of contaminating microorganisms.
Authors
R. Zaharia, C. Petrisor, V. Fatu, I. Leveanu, M.C. Botea, C. Chireceanu
Keywords
peppers, biological control, phytopathogens, Trichoderma sp
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