Biopesticidal Formulation Of Beauveria Bassiana Effective Against Larvae Of Helicoverpa Armigera.

Agarwal, Rajesh

doi:10.4172/2155-6202.10000120

Cited by 6 publications

(7 citation statements)

References 10 publications

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“…Inconsistent efficacy of EPF‐based biopesticides under different environmental conditions could therefore be addressed through improved formulations. For example, Ritu et al () demonstrated that incorporating bentonite in oil‐based formulation of B. bassiana improved its efficacy against Helicoverpa armigera (Hübner; Lepidoptera: Noctuidae).…”

Section: Discussionmentioning

confidence: 99%

Efficacy of aqueous and oil formulations of a specific Metarhizium anisopliae isolate against Aphis craccivora Koch, 1854 (Hemiptera: Aphididae) under field conditions

Mweke

Akutse

Ulrichs

et al. 2019

J Applied Entomology

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Cowpea (Vigna unguiculata) production is constrained by biotic and abiotic factors, among which Cowpea aphid (Aphis craccivora) is ranked a key insect pest that severely limits its potential for provision of food and nutritional security to millions of people in sub‐Saharan Africa. The use of entomopathogenic fungi for A. craccivora management has been recently demonstrated at laboratory and field levels as alternative to synthetic insecticides, but with low adoption in Africa. This study assessed the efficacy of aqueous and oil formulations of Metarhizium anisopliae ICIPE 62 against A. craccivora under field conditions. Metarhizium anisopliae formulations and a commonly used insecticide Duduthrin® were applied using knapsack sprayers with target output of 350 L/ha. Data on aphid infestation levels were collected weekly. ICIPE 62 efficacy in inducing mortality was also assessed 24 hr post‐treatment coupled with mycosis test. Further, leaf and grain yields were determined. After six weeks post‐treatment in the wet season, there was no significant reduction in aphid density in fungus‐treated plots compared to control and Duduthrin®‐treated plots. However, in the dry season six weeks after applying the treatments, oil formulation spray resulted low aphid density compared to control and Duduthrin®‐treated plots. ICIPE 62 formulations did not negatively affect the natural enemies’ population. Leaf yield from the various treatments did not differ significantly in the wet season, but the two fungal formulations recorded higher yields in dry season compared to other treatments. Grain yields in wet and dry seasons were lower in control and Duduthrin®‐treated plots compared to both ICIPE 62 formulations. This study showed that both M. anisopliae ICIPE 62 formulations are effective in suppressing A. craccivora population under field conditions without adverse effects on its beneficial insects. The study also revealed that efficacy of fungal‐based biopesticides is highly dependent on environmental conditions.

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Section: Discussionmentioning

confidence: 99%

Efficacy of aqueous and oil formulations of a specific Metarhizium anisopliae isolate against Aphis craccivora Koch, 1854 (Hemiptera: Aphididae) under field conditions

Mweke

Akutse

Ulrichs

et al. 2019

J Applied Entomology

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“…Although organic compounds are commonly used, inorganic materials also take part in formulations. Geomaterials such as zeolites, talc, bentonite and kaolin have been used as main components or as additives in fungal formulations (Daoust et al, 1983;Kucuk and Kivanc, 2005;Ezzati-Tabrizi et al, 2009;Ritu et al, 2012), providing stability and low cost and easy accessibility, mainly in countries where vast amounts of such materials are available and underexploited.…”

Section: Introductionmentioning

confidence: 99%

VOLCANIC MATERIALS AS CARRIERS FOR THE FORMULATION OF MYCOINSECTICIDES USING THE FUNGUS Beauveria bassiana

Schalamuk

Scorsetti

et al. 2016

Cienc. Inv. Agr.

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V.E. Sy, S. Schalamuk, A.C. Scorsetti, and I.L. Botto. 2016. Volcanic materials as carriers for the formulation of mycoinsecticides using the fungus Beauveria bassiana. Cien. Inv. Agr. 43(2):273-282. Improvements in the formulation of biological insecticides are crucial to increase their stability and competitiveness in the market. The aim of this work was to evaluate the use of volcanic materials with different hydric retention capacities to increase the thermotolerance of B. bassiana conidia. Two pyroclastic rocks and a zeolite clinoptilolite were selected for this study. In addition, a commercial silica gel was used due to its reported capacity to increase conidial thermotolerance. Dry conidia were mixed with the materials to obtain a 2% w/w granular formulation, while conidial powder alone served as the control. Mixtures were stored at room temperature for 30 days and then exposed to 50 ºC for two hours, and the viability was measured before and after the thermal exposure. No significant decrease in viability was observed for conidia stored with any of the pyroclastic materials, while the germination was reduced by 10, 17 and 23% for unformulated conidia, conidia stored with silica gel and conidia stored with zeolite, respectively. From these results, a pyroclastic rock was selected to test its capacity to maintain high viability under different temperatures (4, 25 and 35 ºC) and humidities (~0 and 20%). A decrease in viability was observed with an increase of temperature, and lower viability was also recorded in humid treatments, but only at 25 and 35 ºC.

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“…Ricano et al [20] found that using more than one formula of B. bassiana can remarkably reduce survival and increase mortality rate among red palm weevil larvae and adults. B. bassiana can increase mortality rate of Helicoverpa armigera larvae as well as mentioned by Ritu et al [21]. Such practice, using entomopathogenic fungi infested of conventional insecticides which failed in achieving acceptable control level, could be effective alternative and sound method from ecological and health view points.…”

Section: Efficacy Of Entomopathogenic Fungi On Oryctes Spp Larvaementioning

confidence: 92%

Ecological Sound Control Strategies for Population Suppression of Date Palm Borers Oryctes spp.

Khalaf¹,

Alrubeai²,

Khudhaer³

et al. 2017

JAST-A

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Cultural practices, hand collection of larvae, light traps and entomopathogenic fungi were investigated to manage of palm borers Oryctes spp. in date palm orchards during the years 2010-2015. Cultural practices, such as sanitation and pruning frond bases, hand collection of larvae during regular annual service work and light traps with solar energy were practiced annually in one orchard for five years. In the second orchard, cultural practices were applied for two years, light trap for one year only, and no hand collection of larvae was done during the period. The third orchard was used as a control treatment. Results showed reduction in population density of larvae (91.6% and 53.0%) and adult (76.1% and 41.1%) of Oryects spp. in the 1st and 2nd orchard, respectively. The results also demonstrated the impact of moon light phases on the number of Oryctes spp. adults caught by light trap and the existence of an inverse relation between moon light and flight activity of adults. Biological experiments also revealed that entomopathogenic fungi can cause high mortality rate reaching 100% after 29 d. Beauveria bassiana scored higher mortality rate in short time, especially at concentration of 1 × 10 11 conidia/mL with LT 50 = 12.75 and LT 90 = 20; while, Metarhizium anisopliae caused the higher percentage of malformed adults. The results depicted the effectiveness of some integrated ecological sound control methods for monitoring and population suppression of Oryects spp. in date palm orchards.

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Biopesticidal Formulation Of Beauveria Bassiana Effective Against Larvae Of Helicoverpa Armigera.

Cited by 6 publications

References 10 publications

Efficacy of aqueous and oil formulations of a specific Metarhizium anisopliae isolate against Aphis craccivora Koch, 1854 (Hemiptera: Aphididae) under field conditions

Efficacy of aqueous and oil formulations of a specific Metarhizium anisopliae isolate against Aphis craccivora Koch, 1854 (Hemiptera: Aphididae) under field conditions

VOLCANIC MATERIALS AS CARRIERS FOR THE FORMULATION OF MYCOINSECTICIDES USING THE FUNGUS Beauveria bassiana

Ecological Sound Control Strategies for Population Suppression of Date Palm Borers Oryctes spp.

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