Compatibility of
Beauveria bassiana
With Selected Fungicides and Herbicides

Todorova, Silvia; Coderre, Daniel; Duchesne, Raymond-Marie; Côté, Jean-Charles

doi:10.1093/ee/27.2.427

Cited by 65 publications

(51 citation statements)

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“…According to Anderson and Roberts (1983), spores germination is an important criterion to evaluate compatibility of pesticides with entomopathogenic fungi in vitro. Todorova et al (1998) reinforced the importance of pesticide effect on conidial germination, since those fungal structures are responsible for the appearance of the first insect disease foci in the field. In the authors opinion germination inhibition decreases the efficiency of pathogena as biocontrol agent, either of those already occurring in the agro-ecosystem or those applied by overflow, associated or not to pesticide products.…”

Section: Introductionmentioning

confidence: 89%

Compatibility of Metarhizium Anisopliae (Ascomycota: Hypocreales) with Several Insectisides

Rashid¹,

Baghdadi²,

Sheikhi³

et al. 2010

Journal of Plant Protection Research

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Abstract:The entomopathogenic fungus conidia viability and sporulation may be affected by different environmental factors or by bio-pesticides and chemical products used to protect cultivated plants. In this research, we investigated the compatibility of Metarhizium anisopliae DEMI 001 isolates with three insecticides: fipronil, pyriproxyfen and hexaflumuron. The effect of fipronil, pyriproxyfen and hexaflumuron on sporulation, vegetative growth and conidial germination of the fungus was studied based on measuring the vegetative growth and sporulation. SDA medium was mixed with fipronil (10, 40 and 120 ppm), pyriproxyfen (10, 500 and 1 000 ppm), hexaflumuron (20, 50 and 120 ppm). SAD medium excluding insecticides was designated as blank. To determine the sporulation rate, spores was counted on surface area and vegetative growth was measured on the basis of colony diameter. The results showed that hexaflumuron at the concentration of 120 ppm reduced the vegetative growth to 0% showing the highest reduction effect compared to pyriproxyfen (24.59%) and fipronil (24.31%). All three insecticides reduced drastically the conidial germination at the highest concentrations (0-15%). Hexaflumuron treatment with 0% germination at all three concentrations and fipronil and pyriproxyfen with 32.36% and 9.7% germination at 200 ppm were not significantly different. Regarding the highest negative effect of hexaflumuron on germination at all three concentrations, this insecticide should not be applied together with the entomopathogenic fungus.

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Section: Introductionmentioning

confidence: 89%

Compatibility of Metarhizium Anisopliae (Ascomycota: Hypocreales) with Several Insectisides

Rashid¹,

Baghdadi²,

Sheikhi³

et al. 2010

Journal of Plant Protection Research

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“…In both treatments the mean production CO 2 total was significantly lower than that observed from the control. The growth of B. bassiana was completely suppressed by chlorothalonyl that caused an 88% to 100% reduction in sporulation (Todorova et al 1998). Determining the effect of fungicides on the survival of B. bassiana in the field, Jaros-Su et al (1999) concluded that copper hydroxide might be less deleterious to the fungus than chlorothalonyl or mancozeb.…”

Section: Commercial Namementioning

confidence: 99%

Action of pesticides to Metarhizium anisopliae in soil

Mochi¹,

Monteiro²,

Barbosa³

2005

Neotrop. Entomol.

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Neotropical Entomology 34(6): 961-971 (2005) Ação de Pesticidas em Metarhizium anisopliae no Solo RESUMO -Este trabalho objetivou analisar a ação de alguns acaricidas, fungicidas, inseticidas e herbicidas contendo diferentes princípios ativos, sobre Metarhizium anisopliae Metsch. (Sorokin), inoculado em solo autoclavado. A ação dos pesticidas foi analisada por meio da atividade respiratória do fungo. A primeira avaliação foi realizada 48h após a inoculação, em seguida foram adicionados os pesticidas e a atividade respiratória avaliada por nove vezes a cada 48h e mais cinco vezes a cada quatro dias. Com exceção dos fungicidas, não se observou efeito significativo (P > 0,05) (Sorokin) inoculated into autoclaved soil. The action of the pesticides was evaluated based on the fungal respiratory activity. The first assessment was done at 48h after inoculation. The pesticides were then added and respiratory activity was determined nine times every 48h and an additional five times every 4 days. Except for the fungicides, no significant effect (P > 0.05) of the pesticides on M. anisopliae was observed. A reduction in CO 2 production was observed for the mancozeb treatment from day 4 to day 6 of incubation, and for tebuconazol between days 4 and 6, 8 and 10, and 32 and 36. The same was observed for copper oxychloride between days 10 and 12 and 32 and 36, and for chlorothalonyl between 8 and 10, 10 and 12, and 32 and 36 days of incubation. Identical effect occurred for the acaricides abamectin and fenbutatin oxide, with a reduction in CO 2 production between 20 and 24 days of incubation. The herbicides glyphosate, trifluralin and ametrin reduced the respiratory activity of the fungus between days 10 and 12, while the insecticide trichlorfon reduced respiratory activity only from 32 to 40 days of incubation. The results indicate that the toxic action of pesticides on the fungus in soil is small, suggesting that this pest control bioagent can be used in combination with pesticides without compromising its activity.

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“…Several studies on the effect of pesticides for entomopathogenic fungi have been reported (Li & Holdom 1994, Todorova et al 1998, Batista Filho et al 2001, Loureiro et al 2002, Tamai et al 2002, but few researchers have performed fungus pathogenicity tests under the impact of pesticides in the soil.…”

mentioning

confidence: 99%

Pathogenicity of Metarhizium anisopliae for Ceratitis capitata (Wied.) (Diptera: Tephritidae) in soil with different pesticides

Mochi¹,

Monteiro²,

Bortoli³

et al. 2006

Neotrop. Entomol.

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e incubados a 27 ± 0,5ºC por nove dias, para iniciar a emergência dos adultos, e mais quatro dias à temperatura ambiente. A sobrevivência total do inseto foi substancialmente afetada. Observou-se a atividade patogênica a partir da fase pupal, com o fungo reduzindo (P < 0,05) a sobrevivência, o que também ocorreu na fase de adultos. A fase larval não foi afetada (P >0,05) pelo fungo. A presença de agrotóxicos no solo teve discreta ação na atividade de M. anisopliae; apenas com conídios secos incorporados, os fungicidas clorotalonil e tebuconazole reduziram em 86,2% e 82,5%, respectivamente, a sobrevivência total de C. capitata, enquanto no controle a redução foi de 95,0%. A forma de aplicação dos conídios não influenciou a sobrevivência total do inseto, mas a aplicação da suspensão de conídios na superfície do solo reduziu a sobrevivência nas fases de pupa e adulto. PALAVRAS-CHAVE: Controle biológico, controle microbiano, fungo entomopatogênico, mosca-.....das-frutas ABSTRACT -This research intended to investigate if the presence of pesticides in the soil could affect the pathogenicity of Metarhizium anisopliae Metsch. (Sorokin) for Ceratitis capitata (Wied.) and assess the effect of conidia application as suspension or dry conidia. The fungicides chlorothalonyl and tebuconazol, the acaricide abamectin, the insecticide trichlorfon, and the herbicide ametrin were applied at the manufacturer-recommended doses. Soil samples were placed in glass flasks and were given the fungus as conidial suspension or dry. After pesticide application, 20 3 rd -instar larvae were placed in the soil. The flasks were sealed with voile fabric and incubated at 27 ± 0.5 o C for nine days, until adult emergence; incubation continued for four more days at room temperature. The total insect survival was significantly affected and pathogenic activity was detected from the pupa stage on. Pupa survival was reduced (P<0.05); the same occurred during the adult phase. No effect was observed at the larval stage. The pesticides applied to the soil affected the activity of M. anisopliae slightly: only in the dry conidia assay the fungicides chlorothalonyl and tebuconazole reduced (86.2% and 82.5%, respectively) the survival period of C. capitata compared to the control (95.0%). The techniques used for conidia application did not influence the total insect survival rate, but conidial suspension applied on soil surface reduced survival during the pupae and adult phases.

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Compatibility of Beauveria bassiana With Selected Fungicides and Herbicides

Cited by 65 publications

References 0 publications

Compatibility of Metarhizium Anisopliae (Ascomycota: Hypocreales) with Several Insectisides

Compatibility of Metarhizium Anisopliae (Ascomycota: Hypocreales) with Several Insectisides

Action of pesticides to Metarhizium anisopliae in soil

Pathogenicity of Metarhizium anisopliae for Ceratitis capitata (Wied.) (Diptera: Tephritidae) in soil with different pesticides

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