Compatibility of the biocontrol agent &lt;i&gt;Trichoderma harzianum&lt;/i&gt; C52 with selected fungicides

McLean, K. L.; Hunt, John S.; Stewart, Alison

doi:10.30843/nzpp.2001.54.3780

Cited by 30 publications

(19 citation statements)

References 3 publications

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“…Combination of Trichoderma with reduced levels of fungicide promotes the degree of disease suppression without risk on non-target organisms similar to that achieved with full dose of fungicide application [24][25][26]. Trichoderma harzianum C52 was found to be compatible with some fungicides and determined to be effective biocontrol agent of the onion white rot pathogen [27]. It was found that T. viride combined with either Tebuconazole or onion compost resulted in enhanced white rot control (>90%) and was better than any treatment alone [23,28].…”

Section: Harvesting Sclerotium Cepivorum Sclerotiamentioning

confidence: 99%

Integrated Management of Garli c White Rot (Sclerotium cepivorum Berk)Using Some Fungicides and Antifungal Trichoderma Species

Dilbo¹

2015

J Plant Pathol Microbiol

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White rot (Sclerotium cepivorum Berk), is one of the most destructive soil borne pathogens that pose significant threat to production of garlic and other Allium species in Ethiopia and all over the world. Since most of the conventional control methods are not effective, the development of eco-friendly and cost effective integrated management method is critically required. A study was then conducted with completely randomized design and three replications that consist of all possible combinations of 31 treatments. The study was conducted during 2013/14 under greenhouse condition with the objective of evaluating the effect of two fungicides, Apron Star 42 WS and Tebuconazole, and in combination with four Trichoderma species namely T. hamatum, T. harzianum, T. oblongisporum and T. viride. The results of this study revealed that the efficacy of both fungicides, when tested alone, against S. cepivorum was lower than those treated with Trichoderma spp. alone and the fungicide combined treatments. Among all treatments, T16 (Apron Star 42 WS fungicide combined with T. hamatum and T. viride) has provided the best antagonistic activity against S. cepivorum with no disease incidence, followed by T. viride (T8) alone and Tebuconazole combined with T. hamtum (T21) (both 11.1% incidence). This was well correlated to the level of foliar, stem base and bulb rots symptoms as well as to plant growth and biomass of garlic plant parts. The results suggested that integration of fungicides and Trichoderma species is better than applying them alone, which could be attributed to the synergistic and additive growth promoting effects of combined treatments besides controlling the disease. This integrated approach appears to be the first report in Ethiopia, which has never been tested before.

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Section: Harvesting Sclerotium Cepivorum Sclerotiamentioning

confidence: 99%

Integrated Management of Garli c White Rot (Sclerotium cepivorum Berk)Using Some Fungicides and Antifungal Trichoderma Species

Dilbo¹

2015

J Plant Pathol Microbiol

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“…; McLean et al. ), induces the resistance of fungal pathogens to these fungicides (Carling et al. ; Weiland and Halloin ).…”

Section: Discussionmentioning

confidence: 99%

Epidemics of Rhizoctonia Root Rot in Association with Biological and Physicochemical Properties of Field Soil in Bean Crops

Naseri

2013

Journal of Phytopathology

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During two growing seasons (2008 and 2009), the associations of Rhizoctonia root rot (RRR) with a number of soil properties were determined at different growth stages in 122 commercial bean fields in Zanjan, Iran. Mean RRR incidence at a level of 4-25% sand content was lower than that at 45-65% level. Damage by fly puparia had no significant effect on RRR incidence and occurrence. A greater RRR incidence was detected in field soils treated with fungicides compared with non-treated soils. A lower RRR incidence was associated with the highest level of soil organic matter (1.2-1.8) compared with the lowest level, 0.4-0.8. The highest RRR incidence corresponded with no rhizobial nodulation compared with highly nodulated bean roots. RRR incidence was negatively correlated with soil silt and organic matter content at R6-7 and R9 growth stages. RRR-affected fields were recognized with a greater soil pH (V3) and sand content (R9), and a lower silt (R9) and organic matter content (R6-7 and R9) in comparison with RRR-free fields. Loadings and linear regressions between RRR incidence and principal component scores indicated that the most effective soil characteristic linked to the disease was silt at V3, sand at R6-7 and organic matter at R9 stage. This new epidemiological information extends our knowledge of the bean-RRR-soil interaction on a regional basis.

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“…The ai fluazinam (alone or associated to thiophanate-methyl) and carbendazim (C) drastically reduced viability of Trichoderma strains (up to complete inhibition of spore germination). In vitro assays report insensitivity of T. harzianum, T. stromaticum, and T. atroviride to procymidone [59][60][61] suggesting its simultaneous use with Trichoderma species for the control of S. sclerotiorum in tomato [62] and lettuce [63]. Other research demonstrate that thiophanate-methyl is compatible to many strains of Trichoderma spp., whereas carbendazim and fluazinam are extremely toxic [64][65], supporting our findings.…”

Section: Compatibility Of Fungicides With Trichoderma Spp In Vitro Amentioning

confidence: 99%

Trichodermaas a Biocontrol Agent againstSclerotiniaStem Rot or White Mold on Soybeans in Brazil: Usage and Technology

Juliatti¹,

Rezende²,

Juliatti³

et al. 2019

Trichoderma - The Most Widely Used Fungicide

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Biological control agents are alternatives to chemical pesticides in the management of plant diseases. Currently, hundreds of bioproducts are commercially available in international market varying mainly in antagonistic microorganisms and formulation. We screened four Trichoderma-based products as to their efficacy in controlling Sclerotinia stem rot (SSR) under protected and field environments and their effect on soybean seeds' sanity and physiological qualities. We also tested application technologies through seed microbiolization and foliar spraying to deliver the microorganisms, and their compatibility with chemical fungicides. In vitro assays showed that all Trichoderma strains were antagonistic to S. sclerotiorum evidencing hyperparasitic activity. Moreover, the bioproducts reduced fungi incidence on soybean seeds, promoted faster seedling emergence and did not hamper seeds' vigor. Increases of 14 and 37% were registered for root length and shoot fresh weight over that of the untreated control indicating potential application of the bioproducts as soybean growth promoters. Thiophanate-methyl and procymidone were the most compatible, without drastically affecting spore germination or mycelium growth. Under field conditions, all Trichoderma strains reduced SSR incidence and increased soybean grain yield. Formulation interferes on bioproducts' viability and efficacy deserving special attention upon development.

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Compatibility of the biocontrol agent <i>Trichoderma harzianum</i> C52 with selected fungicides

Cited by 30 publications

References 3 publications

Integrated Management of Garli c White Rot (Sclerotium cepivorum Berk)Using Some Fungicides and Antifungal Trichoderma Species

Integrated Management of Garli c White Rot (Sclerotium cepivorum Berk)Using Some Fungicides and Antifungal Trichoderma Species

Epidemics of Rhizoctonia Root Rot in Association with Biological and Physicochemical Properties of Field Soil in Bean Crops

Trichodermaas a Biocontrol Agent againstSclerotiniaStem Rot or White Mold on Soybeans in Brazil: Usage and Technology

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