The effect of different formulations of Beauveria bassiana on Sitophilus zeamaisin stored maize

Hidalgo, Eduardo; Moore, D.; Patourel, G. le

doi:10.1016/s0022-474x(97)00041-6

Cited by 88 publications

(56 citation statements)

References 14 publications

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“…The use of chemical agents to prevent or control insect infestations has been the main method of grain protection, since it is the simplest and most cost-effective means of dealing with stored product pests (Hidalgo et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Plant compounds insecticide activity against Coleoptera pests of stored products

Moreira

Picanço

Barbosa³

et al. 2007

Pesq. agropec. bras.

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-The objective of this work was to screen plants with insecticide activity, in order to isolate, identify and assess the bioactivity of insecticide compounds present in these plants, against Coleoptera pests of stored products: Oryzaephilus surinamensis L. (Silvanidae), Rhyzopertha dominica F. (Bostrichidae) and Sitophilus zeamais Mots. (Curculionidae). The plant species used were: basil (Ocimum selloi Benth.), rue (Ruta graveolens L.), lion's ear (Leonotis nepetifolia (L.) R.Br.), jimson weed (Datura stramonium L.), baleeira herb (Cordia verbenacea L.), mint (Mentha piperita L.), wild balsam apple (Mormodica charantia L.), and billy goat weed or mentrasto (Ageratum conyzoides L.). The insecticide activity of hexane and ethanol extracts from those plants on R. dominica was evaluated. Among them, only hexane extract of A. conyzoides showed insecticide activity; the hexane extract of this species was successively fractionated by silica gel column chromatography, for isolation and purification of the active compounds. Compounds 5,6,7,8,3',4', 5,6,7,8,3'-pentamethoxy-4',5'-methilenedioxyflavone and coumarin were identified. However, only coumarin showed insecticide activity against three insect pests (LD 50 from 2.72 to 39.71 mg g -1 a.i.). The increasing order of insects susceptibility to coumarin was R. dominica, S. zeamais and O. surinamensis.Index terms: natural insecticide, pest management, alternative control, secondary metabolites. Compostos de plantas com atividade inseticida a coleópteros-praga de produtos armazenadosResumo -O objetivo deste trabalho foi selecionar plantas com atividade inseticida, para isolar, identificar e avaliar a bioatividade de compostos inseticidas presentes nessas plantas, contra as seguintes pragas de produtos armazenados da ordem Coleoptera: Sitophilus zeamais Mots. (Curculionidae), Rhyzopertha dominica F. (Bostrichidae) e Oryzaephilus surinamensis L. (Silvanidae). As espécies de plantas usadas foram: anis (Ocimum selloi Benth), arruda (Ruta graveolens L.), cordão-de-frade (Leonotis nepetifolia L.), datura (Datura stramonium L.), erva baleeira (Cordia verbenacea L.), hortelã (Mentha piperita L.), melão-de-são-caetano (Mormodica charantia L.) e mentrasto (Ageratum conyzoides L.). Avaliou-se a toxicidade dos extratos hexânico e etanólico dessas plantas sobre R. dominica. Somente o extrato hexânico de A. conyzoides apresentou atividade inseticida. O extrato hexânico desta planta foi fracionado, sucessivamente, por cromatografia de coluna de sílica gel, para isolamento e purificação dos compostos ativos. Os compostos 5,6,7,8,3',4', 5,6,7,8,5'-metilenodioxiflavona e cumarina foram identificados. Entretanto, somente a cumarina apresentou atividade inseticida às três espécies de insetos (DL 50 de 2,72 a 39,71 mg g -1 de i.a.). A ordem crescente de suscetibilidade à cumarina foi R. dominica, S. zeamais e O. surinamensis.Termos para indexação: inseticida natural, manejo de pragas, controle alternativo, metabolito secundário.

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Section: Introductionmentioning

confidence: 99%

Plant compounds insecticide activity against Coleoptera pests of stored products

Moreira

Picanço

Barbosa³

et al. 2007

Pesq. agropec. bras.

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“…Hidalgo et al (1998) pointed out that it is possible to achieve a useful level of S. zeamais by using formulated B. bassiana conidia.…”

Section: Discusionmentioning

confidence: 99%

“…The possibility of using fungal pathogens to control insects has been studied for many years but little attention has been paid to the use of fungi as control agents against storage pests (Khan and Selman, 1988;Rodrigues and Pratissoli, 1990;Adane, 1994;Adane et al, 1996;Padı´n et al, 1997;Hidalgo et al, 1998;Moino et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

A laboratory assessment of the potential of the entomopathogenic fungi Beauveria bassiana (Beauvarin) to control Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) and Sitophilus granarius (L.) (Coleoptera: Curculionidae)

Shams¹,

Mohammad²,

Imani³

et al. 2011

Afr. J. Microbiol. Res.

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This research was carried out to evaluate the suppressive efficacy of entomopathogenic fungi Beauveria bassiana against adults of Callosobruchus maculatus (F.) and Sitophilus granarius (L.) on stored grains in darkness (27±2°C and 65±5% RH). The insects were inoculated by following immersion in five aqueous suspensions with concentrations determined with preliminary tests and compared with untreated wheat and cowpea as control. Probit analysis showed that the lowest LT 50 values in suspensions with highest concentrations (2.3 × 10 7 conidia ml -1 ) were 6.63 and 10.45 days for C. maculatus and S. granarius, respectively. On the other hand, the LC 50 values on day 9 post-treatment were 3.17 × 10 6 and 6.08 × 10 7 con.ml -1 for C. maculatus and S. granarius, respectively. Comparison of Lc 50 , LT 50 values and mortalities indicated that in both assays, B. bassiana was consistently more virulent for C. maculatus than S. granarius. The overall results showed that these two pests were controlled successfully with entomopathogenic fungi Beauveria bassiana.

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“…6 The use of chemical agents to prevent or control insect infestations has been the main method of grain protection, since it is the simplest and most cost-effective means of dealing with stored product pests. 7 However, current use of synthetic insecticides for the control of storage insect pests is limited because of resistance developed by insect pests, pest resurgence, consumers concern, widespread environmental hazards and increasing costs of application. 8 Thus, there is an urgent need to develop safe alternatives to conventional insecticides and fumigants for the protection of grain products against insect infestations.…”

Section: Introductionmentioning

confidence: 99%

Synergetic effects of two botanical entomocides as pest-protectants in maize grains

2016

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Sitophilus zeamais Motschulsky infestation causes severe post-harvest losses of cereal grains in Nigeria leading to major nutritional and economic losses. A laboratory study was conducted to determine the efficacy of Myrcianthes fragrans and Aframomum melegueta seed powders and methanol extract as well as their synergetic effects on S. zeamais. The ability of the plant products to protect maize grain against S. zeamais infestation was assessed in terms of mortality 24 to 96 h posttreatment, oviposition, and adult emergence, weight loss and grains damage. M. fragrans and A. melegueta products significantly cause adult mortality of S. zeamais. M. fragrans products were the most toxic as it evoked 100% adult mortality within 24 h of application while A. melegueta products evoked 100% mortality of S. zeamais at 48 and 72 h post treatment, respectively. The synergetic effects of the plant products caused 100% adult mortality at 48 and 72 h post-treatment, respectively. Oviposition, adult emergence, weight loss and damage of the maize grains treated with the plant products were completely inhibited compared with untreated grains. The results obtained revealed that 2 g and 2% sole application of M. fragrans and mixed application of M. fragrans and A. melegueta products were effective in controlling Sitophilus zeamais post-harvest infestation and grain damage and could serve as an alternative to synthetic insecticide in ensuring steady supply of maize grains, thus ensuring food security as the plants are of medicinal and nutritional quality.

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The effect of different formulations of Beauveria bassiana on Sitophilus zeamaisin stored maize

Cited by 88 publications

References 14 publications

Plant compounds insecticide activity against Coleoptera pests of stored products

Plant compounds insecticide activity against Coleoptera pests of stored products

A laboratory assessment of the potential of the entomopathogenic fungi Beauveria bassiana (Beauvarin) to control Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) and Sitophilus granarius (L.) (Coleoptera: Curculionidae)

Synergetic effects of two botanical entomocides as pest-protectants in maize grains

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