In-Vivo Evaluation of Competitive Parasitic Ability and Rhizosphere Colonisation of Different Trichoderma Isolates

Singh, Monika; Sharma, O. P.; Bhagat, Someshwar; Pandey, Neetu

doi:10.20546/ijcmas.2016.504.006

Cited by 2 publications

(2 citation statements)

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“…The highest population was counted at 45 days, followed by 30 and 15 days. The soil moisture content is the main factor responsible for this time-totime variation (Singh et al, 2016).…”

Section: Estimation Of Population Dynamics Of Trichoderma Harzianum I...mentioning

confidence: 99%

Population dynamics of Trichoderma harzianum in bio- fortified compost against soil-borne potato diseases

Bhuiyan,

Rubayet

2024

Ann. Bangladesh Agric.

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Soil-borne diseases pose significant challenges to global potato cultivation, resulting in yield losses and economic implications. Utilizing biological control agents offers a sustainable and environmentally and friendly approach to manage these diseases. Before implementing the experiment in the field, a series of in-vitro tests were conducted to select a virulent isolate of the tested pathogens and an effective antagonistic isolate of Trichoderma harzianum. In the pathogenicity test, isolate RS-1 of Rhizoctonia solani and isolate SR-8 of Sclerotium rolfsii exhibited the highest virulence against two pathogens in potato variety ‘Cardinal’ in regard to seedling mortality (44.44-88.88%). During in vitro screening, T. harzianum isolate Tri 7 displayed the greatest ability to inhibit the mycelium growth of all tested pathogens. In the field trial, the highest seedling mortality (69.06%) was observed in T2 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii). However, the highest seedling mortality (86.94%) was reduced by treatment T7 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii +500g wheat grain colonized with Trichoderma fortified poultry compost). Treatment T7 also recorded the lowest incidences of stem canker (7.83%) and stem rot (8.64%), whereas the highest disease incidences occurred in the T2 treatment plot. Notably, treatment T7 gave the highest yield of 30.94 tons/ha, while the control plot T2 yielded the lowest at 12.17 tons/ha. Initially, Trichoderma population was minimal prior to the application of Trichoderma- fortified compost. However, populations gradually increased over time, peaking at 3 months across all treatments except the control, where no Trichoderma was applied. However, a decline in T. harzianum population was noted one month after potato harvesting. This approach offers a potential solution for managing potato soil-borne diseases in a sustainable and environmentally friendly manner. Ann. Bangladesh Agric. (2023) 27 (1): 81-92

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“…The highest population was counted at 45 days, followed by 30 and 15 days. The soil moisture content is the main factor responsible for this time-totime variation (Singh et al, 2016).…”

Section: Estimation Of Population Dynamics Of Trichoderma Harzianum I...mentioning

confidence: 99%

Population dynamics of Trichoderma harzianum in bio- fortified compost against soil-borne potato diseases

Bhuiyan,

Rubayet

2024

Ann. Bangladesh Agric.

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“…Les facteurs physico-chimiques qui agissent sur l'efficacité et la répartition des Trichoderma dans le sol sont : le pH, la température, la teneur en sel, en matière organique et la présence ou l'absence d'autres microorganismes dans le sol (Landreau, 2001;Naher et al, 2013;Monika et al, 2016;Montoya-Gonzalez et al, 2016). L'utilisation de ces champignons exige donc une bonne connaissance de l'écologie des souches et de leurs différents mécanismes d'action.…”

Section: Introductionunclassified

Influence <i>in vitro</i> de divers facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de <i>Trichoderma</i> sp.

Gueye¹,

Ndiaye²,

Sarr³

et al. 2016

Int. J. Bio. Chem. Sci

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Influence in vitro de divers facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de Trichoderma sp. RESUMELes Trichoderma sont des champignons imparfaits saprophytes que l'on retrouve dans divers milieux comme le sol, le bois mort, les débris des végétaux et les organes aériens des plantes. Ils ont un rôle phytoprotecteur et stimulateur du développement des plantes associées. L'effet de différents facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de Trichoderma a été évalué. Ces souches ont été isolées à partir de la rhizosphère de la tomate. Une étude préliminaire a été effectuée sur quatre milieux de culture (PDA, MEA, SB et DOX) pour la sélection du milieu d'étude. Les résultats obtenus montrent que le milieu PDA permet une meilleure croissance des souches de Trichoderma. La température optimale de croissance des différentes souches est de 29 °C et le pH 5 se révèle être le plus adéquat pour la culture des Trichoderma. Cette étude montre également que les souches de Trichoderma résistent à des concentrations de sel (NaCl) allant jusqu'à 3%. © 2016 International Formulae Group. All rights reserved. Mots clés:Trichoderma, facteurs limitant, température, pH, salinité, milieu de culture.In vitro influence of various abiotic factors (température, pH, salinity) on mycelium growth of three local strains of Trichoderma sp. ABSTRACTTrichoderma are saprophytic imperfect fungi that are found in various environments such as soil, dead wood, vegetable fragments and plant aerial organs. They protect and stimulate development of related plants. Effects of various abiotic factors (temperature, pH, salinity) on mycelium growth of three local Trichoderma strains were investigated. These strains were isolated from tomato rhizosphere. A preliminary study was performed on four culture media (PDA, MEA, SB and DOX) for the selection of the best media. The results N. GUEYE et al. / Int. J. Biol. Chem. Sci. 10(2): 769-778, 2016 770 showed that PDA medium was highly growth of Trichoderma strains. The optimum temperature for growth of different strains is 29 °C and pH 5 was found to be most suitable for Trichoderma culture. Indeed, Trichoderma strains resistant to salt concentrations (NaCl) up to 3%.

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In-Vivo Evaluation of Competitive Parasitic Ability and Rhizosphere Colonisation of Different Trichoderma Isolates

Cited by 2 publications

References 9 publications

Population dynamics of Trichoderma harzianum in bio- fortified compost against soil-borne potato diseases

Population dynamics of Trichoderma harzianum in bio- fortified compost against soil-borne potato diseases

Influence <i>in vitro</i> de divers facteurs abiotiques (température, pH, salinité) sur la croissance mycélienne de trois souches locales de <i>Trichoderma</i> sp.

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