In vitro compatibility of Trichoderma spp. with fungicides commonly used in cocoa ( Theobroma cacao L.)

Yepez, Pedro Isaías Terrero; Villafuerte, Sofia Lorena Peñaherrera; Hidalgo, Zoila Karina Solís; Coello, Danilo Isaac Vera; Cedeño, José Bernardo Navarrete; Defaz, Mario Andrés Herrera

doi:10.18004/investig.agrar.2018.diciembre.146-151

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…has been reported by several authors [23]. Terrero et al [24] reported the compatibility of Trichoderma species with azoxystrobin and copper hydroxide fungicides, and Ruano et al [25] implemented the use of Trichoderma spp. and the fungicide fluazinam (in concentrations of 0.01 and 0.05 mg L −1 ) for the control of Rosellinia necatrix in avocado plants.…”

Section: Introductionmentioning

confidence: 85%

In Vitro Study of the Compatibility of Four Species of Trichoderma with Three Fungicides and Their Antagonistic Activity against Fusarium solani

et al. 2023

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Strawberry wilt is a disease caused by Fusarium solani, which it provokes the death of the plant. Farmers mainly use chemical methods for its control, which has a negative impact on the environment and human health. Given the growing demand for organic agricultural products, compatible alternatives must be sought for disease management that can reduce the doses of fungicides. A combination of pesticides and biological control agents could be an alternative for the management of F. solani. Consequently, investigations on fungicide compatibility and synergistic effects are recommended in relation to the biological control of strawberry wilt. In this study, potential antagonism was calculated according to the class of mycoparasitism and the percentage inhibition of radial growth in order to later design a compatibility model of the different species of Trichoderma with three protective fungicides at different concentrations. The potential antagonism showed that Trichoderma asperellum presented high compatibility with the fungicides Captan and Mancozeb added in concentrations of 450, 900, and 1350 mg L−1. The use of antagonistic strains together with the fungicide Chlorothalonil in its three concentrations showed a negative effect on the growth of Trichoderma species, which caused low and null compatibility against the MA-FC120 strain of F. solani in vitro.

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Section: Introductionmentioning

confidence: 85%

In Vitro Study of the Compatibility of Four Species of Trichoderma with Three Fungicides and Their Antagonistic Activity against Fusarium solani

et al. 2023

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“…It is only with good agricultural practices that chemical and biological interventions are cost-effective, because cultural methods alone are inadequate to control FPR (Bateman et al, 2005). Several studies report the use of fungicides as a tactic within a FPR disease management in cacao farms (Anzules et al, 2019;Bailey et al, 2018;Bateman et al, 2005;Krauss et al, 2010;Terrero Yépez et al, 2018;Torres De La Cruz et al, 2013). In this context, the lack of cacao resistant clones (Yamashita & Fraaije, 2018;Zhao et al, 2019), high morphological and molecular diversity of pathogen (Maridueña-Zavala et al, 2016), and the disease development due to climatic variables (Leandro-Muñoz et al, 2017) make it necessary to develop programmed applications of fungicides.…”

Section: Introductionmentioning

confidence: 99%

Inhibition and stimulation of mycelial growth of Moniliophthora roreri by flutolanil in populations of Ecuador

Amaya-Márquez

Espinoza-Lozano

Villavicencio-Vásquez

et al. 2022

Acta Agron.

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Frosty pod rot (FPR) of cacao is caused by Moniliophthora roreri (MR). Effective management must include chemical or biological control, in addition to agronomic tactics. Flutolanil has been effective in controlling FPR. The objective of this research was to determine the response to flutolanil of MR isolates from the Amazon and Coast regions of Ecuador. Percentage of mycelial growth inhibition (PGI), and medium inhibitory concentration (IC50) against three concentrations of the fungicide were determined. One µg mL-1 of flutolanil in the culture medium inhibited completely the growth of the 76 MR isolates. At 0.1 μg mL-1, 74/76 were inhibited between 70-97 % compared to the control. Conversely, at the lower concentrations (0.01-0.001 μg mL-1) the results of inhibition were only of 22 % and 47 %, respectively. Four groups were identified: one included the most sensitive (66/76) to different degrees, and three groups representing 10 isolates that were stimulated at low concentrations of flutolanil. IC50 values were low, indicating very high sensitivity in the MR population. IC50max were 0.1342 and 0.1457 in two isolates from the Coast and the Amazon regions, respectively. Isolates from the Coast were significantly less sensitive to flutolanil than those from the Amazon ( IC50 = 0.046 ± 0.03 and IC50 = 0.030 ± 0.02, respectively), however, the differences were minimal. There were no significant differences when comparing the provinces. The most stimulated isolates were found in the provinces of Orellana and Los Ríos. It is concluded that flutolanil seems effective against the causal agent of FPR in Ecuador, both Coast and Amazon regions.

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In vitro compatibility of Trichoderma spp. with fungicides commonly used in cocoa ( Theobroma cacao L.)

Abstract: Compatibilidad in vitro de Trichoderma spp. con fungicidas de uso común en cacao (Theobroma cacao L.) In vitro compatibility of Trichoderma spp. with fungicides commonly used in cocoa (Theobroma cacao L.

Cited by 2 publications

References 8 publications

In Vitro Study of the Compatibility of Four Species of Trichoderma with Three Fungicides and Their Antagonistic Activity against Fusarium solani

In Vitro Study of the Compatibility of Four Species of Trichoderma with Three Fungicides and Their Antagonistic Activity against Fusarium solani

Inhibition and stimulation of mycelial growth of Moniliophthora roreri by flutolanil in populations of Ecuador

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