Evaluation of extracts of neem (Azadirachta indica A. Juss) for the control of some stored product pests

Makanjuola, W.A.

doi:10.1016/0022-474x(89)90029-5

Cited by 59 publications

(24 citation statements)

References 8 publications

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“…O extrato aquoso de nim foi obtido, em laboratório, de uma suspensão de folhas (maduras, secadas ao ar e moídas) em água fria na proporção de 1:10 (p/v) por 24 horas (Makanjuola, 1989). Após filtração e liofilização, o extrato foi dissolvido numa mistura de acetona:água (7:3) e incorporado ao germe de trigo, permanecendo por cerca de 30 minutos à temperatura ambiente para evaporação dos solventes.…”

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Atividade de extrato aquoso de folhas de nim (Azadirachta indica) sobre Spodoptera frugiperda

Prates

Viana

Waquil

2003

Pesq. agropec. bras.

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Atividade de extrato aquoso de folhas de nim 437 NOTAS CIENTÍFICASAtividade de extrato aquoso de folhas de nim (Azadirachta indica) sobre Spodoptera frugiperda (1) Hélio Teixeira Prates (2) , Paulo Afonso Viana (2) e José Magid Waquil (2) Resumo -A lagarta-do-cartucho do milho (Spodoptera frugiperda (J. E. Smith)) tem sido controlada com inseticidas sintéticos. Uma das caracteristicas do nim (Azadirachta indica A. Juss) é sua atividade inseticida contra pragas, como sucedâneo aos sintéticos. O objetivo deste trabalho foi avaliar a atividade inseticida do extrato aquoso das folhas do nim sobre a lagarta-do-cartucho do milho, em laboratório. Bioensaios com diferentes concentrações de extrato em dieta artificial, tendo o inseticida chlorpyrifos como testemunha, revelaram, 15 dias após infestação com larvas, eficiência equivalente entre as concentrações 3,60 a 10,00 mg mL -1 . A análise de Probit mostrou CL 50 = 2,67 mg mL -1 ; o extrato aquoso das folhas de nim apresenta, portanto, efeito inseticida sobre a lagarta-do-cartucho do milho.Termos para indexação: lagarta-do-cartucho, inseticida de origem vegetal, combate às pragas, controle biológico. Activity of neem tree (Azadirachta indica) leaves aqueous extract on Spodoptera frugiperdaAbstract -The fall armyworm (Spodoptera frugiperda (J. E. Smith)) has been controlled with synthetic insecticides bringing risk to the environment. Neem (Azadirachta indica A. Juss) is reported to be a natural alternative to synthetic insecticides against many insect species. The objective of this work was to evaluate the activity of neem leaves aqueous extract on fall armyworm, in laboratory. Bioassays carried out using artificial feed with various extract concentrations, and chlorpyrifos as control, indicated, 15 days after larvae infestation, similar efficiency in concentrations from 3.60 to 10.00 mg mL -1 . Probit analysis showed LC 50 = 2.67 mg mL -1 . Hence, aqueous extract from neem leaves are active against fall armyworm.

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Atividade de extrato aquoso de folhas de nim (Azadirachta indica) sobre Spodoptera frugiperda

Prates

Viana

Waquil

2003

Pesq. agropec. bras.

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“…LC 50 of aqueous extracts of Allium sativum, cloves and Allium fistulosum leaves was found to be more than the ethanol extracts as alkyl compounds present in the Alliaceae family are readily obtained by distillation with water (Denloye 2010). Similarly, leaf aqueous extract of Azadirachta indica was more toxic to C. maculatus than the methylated spirit extracts (Makanjuola 1989). In case of aromatic plants, acetonic or methanolic extracts have proven more potent as EOs present in aromatic plants are readily soluble in acetone or methanol.…”

Section: Contact Toxicitymentioning

confidence: 93%

“…A suitable solvent plays an important role in the activity of plant products as seen in the studies of Akinyemi et al (2000), Denloye (2010), Doughari and Manzara (2008) and Makanjuola (1989). LC 50 of aqueous extracts of Allium sativum, cloves and Allium fistulosum leaves was found to be more than the ethanol extracts as alkyl compounds present in the Alliaceae family are readily obtained by distillation with water (Denloye 2010).…”

Section: Contact Toxicitymentioning

confidence: 98%

Botanicals as eco friendly biorational alternatives of synthetic pesticides against Callosobruchus spp. (Coleoptera: Bruchidae)—a review

et al. 2013

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The article presents the potential of botanicals in the management of Callosobruchus spp., the primary insect pest causing deterioration to a variety of stored legume grains. Different botanical formulations have been reported time to time showing pronounced insecticidal activity, repellence to pest, oviposition deterrency, adult emergence inhibition, ovicidal, larvicidal, pupaecidal activity and feeding deterrency based on their contact toxicity and fumigation effects. Some of the botanicals have also been practically proved efficacious to protect the stored food commodities from the bruchids during storage conditions. Such botanical formulations have shown their promise in integrated management of the pest as semiochemicals by showing behaviour altering efficacy against the bruchids, thereby, reducing the induced pest resistance problem which is frequently reported with synthetic pesticides. Hence, they may be recommended in food security programmes as eco-friendly and biorational alternatives of synthetic pesticides providing integrated management of the losses of stored food commodities due to infestation of bruchids.

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“…It can however be extracted and made available by methanol. The insecticidal plant powders may be more potent through extraction using appropriate solvent (Makanjuola, 1989;Ogunleye, 2000). Methanol has been used by some researchers to extract some active principles from plant materials.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the dust and methanol extracts of Garcinia kolae for the control of Callosobruchus maculatus (F.) and Sitophilus zeamais (Mots)

Ogunleye

Adefemi

2007

J. Zhejiang Univ. - Sci. B

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Ogunleye et al. / J Zhejiang Univ Sci B 2007 8(12)Abstract: Insecticidal effects of different doses of the dust and methanol extracts of Garcinia kolae on Callosobruchus maculatus and Sitophilus zeamais were tested. The dust had no significant effect on the two insects; none of them died even at 3 d after treatment. The methanol extracts, however, had rapid lethal effects on both C. maculatus and S. zeamais. The mortality of C. maculatus by the lowest concentration of methanol extracts ranged from 95%~100% whereas in S. zeamais, the mortality ranged from 87.5%~100% and 70%~100% in concentrations of 1 g extract+3 ml methanol and 1 g extract+5 ml methanol, respectively, from 24 to 48 h. The least concentration of 1 g extract+15 ml methanol had no significant lethal effect on Sitophilus zeamais.

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Evaluation of extracts of neem (Azadirachta indica A. Juss) for the control of some stored product pests

Cited by 59 publications

References 8 publications

Atividade de extrato aquoso de folhas de nim (Azadirachta indica) sobre Spodoptera frugiperda

Atividade de extrato aquoso de folhas de nim (Azadirachta indica) sobre Spodoptera frugiperda

Botanicals as eco friendly biorational alternatives of synthetic pesticides against Callosobruchus spp. (Coleoptera: Bruchidae)—a review

Evaluation of the dust and methanol extracts of Garcinia kolae for the control of Callosobruchus maculatus (F.) and Sitophilus zeamais (Mots)

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