Efficacité d’extraits de feuilles de neem Azadirachta indica (Sapindale) sur Plutella xylostella (Lepidoptera : Plutellidae), Hellula undalis (Lepidoptera : Pyralidae) et Lipaphis erysimi (Hemiptera : Aphididae) du chou Brassica oleracea (Brassicaceae) da

The effects of ethanolic extract of neem, Azadirachta indica (Meliaceae), seeds and petroleum ether extract of Lantana camara leaves (Verbenaceae) on the populations of three cabbage pests, Plutella xylostella, Brevicoryne brassicae and Hellula undalis were studied. The study was conducted between January and April 2008. Extracts of the two plants were sprayed on cabbage plants to control these pests. A standard synthetic chemical insecticide (Mektin) was used as reference product. The experiment was conducted in a randomized complete block design and each treatment was replicated four times. The effects of plant extracts on the population dynamics of the pests’ species, the level of infestation and yield were assessed. Significantly more of the pests infested the control plants than the treated plants (P< 0.01). The mean weight of cabbage heads on the sprayed plots was significantly heavier than that of the control unsprayed plots. The use of A. indica seeds and L. camara leaf extracts increased yield by 37.05% and 25.80%, respectively. Spraying the cabbage plants with the plant extracts significantly reduced the numbers of pests compared with the control plants. The use of these plant extracts can be incorporated into an overall control programme of these pests.

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EFEITO DE PLANTAS INSETICIDAS NO COMPORTAMENTO E BIOLOGIA DE PLUTELLA XYLOSTELLA (LEPIDOPTERA: PLUTELLIDAE)

Arquivos do Instituto Biológico ◽

10.1590/1808-1657v78p2792011 ◽

2011 ◽

Vol 78 (2) ◽

pp. 279-285

Author(s):

F.G. Jesus ◽

L.A. de Paiva ◽

V.C. Gonçalves ◽

M.A Marques ◽

A.L. Boiça Junior

Keyword(s):

Brassica Oleracea ◽

Azadirachta Indica ◽

Plutella Xylostella ◽

Sapindus Saponaria

RESUMO Avaliou-se o efeito de Azadirachta indica A. Juss. (Nim), Sapindus saponaria L. (Sabão de soldado), Nim + Piretro + Rotenona, Dimorphandra mollis (Faveira) e Stryphnodendron adstringens (Mart) Coville (Barbatimão) em relação a não-preferência para oviposição e alimentação, atratividade e biologia de Plutella xylostella. Discos foliares de couve (Brassica oleracea var. acephala) cultivar Manteiga foram imersos em cada extrato à concentração de 10% (massa/volume) por 30 segundos para realização dos experimentos. Para o teste sem chance de escolha, os tratamentos que apresentaram menores atratividades foram os extratos de A. indica e D. mollis, e o menor consumo foi em A. indica. Os extratos de A. indica, S. saponaria D. mollis e S. adstringens proporcionaram efeito deterrente na oviposição de P. xylostella. Os tratamentos A. indica, S. saponaria e S. adstringens influênciaram negativamente os parâmetros biológicos da praga.

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Effet des extraits aqueux de Calotropis procera sur les principaux ravageurs du chou en culture au Sénégal

International Journal of Biological and Chemical Sciences ◽

10.4314/ijbcs.v14i5.9 ◽

2020 ◽

Vol 14 (5) ◽

pp. 1600-1610

Author(s):

Saliou Ngom ◽

Toffène Diome ◽

Bocar Diop ◽

Mbacké Sembene

Keyword(s):

Plutella Xylostella ◽

Spodoptera Littoralis ◽

Calotropis Procera ◽

P Value ◽

Aqueous Extracts ◽

Hellula Undalis ◽

Lepidoptera Pyralidae ◽

Extraits Aqueux ◽

Cabbage Pests ◽

Lepidoptera Noctuidae

Au Sénégal, le chou est l’un des légumes les plus cultivés et consommés, de par son cycle relativement court (60-90 jours après repiquage) et sa possibilité d’être cultivé toute l’année. Cependant il est attaqué par plusieurs ravageurs tels que Plutella xylostella (L.) (Lepidoptera, Plutellidae), Hellula undalis (F.) (Lepidoptera, Pyralidae) et Spodoptera littoralis (B.) (Lepidoptera, Noctuidae). L’objectif de cette étude était de contribuer à la lutte contre ces ravageurs du chou en culture dans la zone des Niayes en utilisant les extraits aqueux à base de feuilles de Calotropis procera (Apocynaceae). L’étude a été menée sur 28 parcelles élémentaires dans la zone des Niayes (durant la période du 3 janvier au 22 mars 2019). Les formulations d’extrait de feuilles de C. procera utilisant comme solvant l’eau de robinet et l’eau de puits (ER et EP), appliquées à des temps différents le matin (ERM, EPM) et le soir (ERS, EPS) ont montré leurs efficacités sur les larves de P. xylostella et H. undalis. Par contre, les extraits ne sont pas efficaces sur S. littoralis (P-value= 0,672). En plus de leurs effets biocides, les extraits à base de feuilles de C. procera semblent accélérer la croissance des plants de chou. La nature du solvant et la période du traitement n’ont pas montré une différence significative.Mots clés : Biocide, Brassicassée, Niayes, lutte biologique English title: Aqueous extracts effect of Calotropis procera on the principal cabbage pests in culture in Senegal In Senegal, the cabbage is one of the most cultivated and consumed vegetables, from its relatively short cycle (60-90 days after road repair) and the possibility of being cultivated all the year. However it is attacked by several pests such as Plutella xylostella (L.) (Lepidoptera, Plutellidae), Hellula undalis (F.) (Lepidoptera, Pyralidae) and Spodoptera littoralis (B.) (Lepidoptera, Noctuidae). The objective of this study was to contribute on protect against cabbage pests in culture in the zone of Niayes by using the aqueous extracts containing sheets of Calotropis procera (Apocynaceae). The study was undertaken on 28 elementary pieces to in the zone of Niayes (during the period of January 3 at March 22, 2019). The formulations of extract using as solvent the water of tap and the water of well (ER and EP), applied to different times morning (ERM, EPM) and evening (ERS, EPS) showed their effectiveness on larvae of P. xylostella and H. undalis. On the other part S. littoralis was resistant to treatment (P=0,672) confirms it. In addition to their biocides effects, the extracts containing sheets of C procera seem accelerated the cabbage patches growth. The nature of solvent and the treatment period did not show a significant difference.Keywords: Biocide, Brassicasseae, Niayes, biological control

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Effets d’extrait hydroéthanolique de feuilles de neem (Azadirachta indica A. Juss) sur Plutella xylostella (Lepidoptera : Plutellidae) et Lipaphis erysimi (Hemiptera : Aphididae) dans la production du chou au Sud du Togo

International Journal of Biological and Chemical Sciences ◽

10.4314/ijbcs.v10i4.18 ◽

2017 ◽

Vol 10 (4) ◽

pp. 1666

Author(s):

Abla Déla Mondédji ◽

Boris Dodji Kasseney ◽

Wolali Seth Nyamador ◽

Georges Abbévi Abbey ◽

Komina Amévoin ◽

...

Keyword(s):

Azadirachta Indica ◽

Plutella Xylostella ◽

Lipaphis Erysimi

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Toxicidade de Extratos de Sementes de Jatropha curcas e Azadirachta indica à Plutella xylostella

Revista Processos Químicos ◽

10.19142/rpq.v7i13.189 ◽

2013 ◽

Vol 7 (13) ◽

pp. 73-76

Author(s):

Paulo V. Sousa ◽

Flávio G. Jesus ◽

Márcio S. Araújo ◽

Fábio S. Matos ◽

Leandro Bacci

Keyword(s):

Brassica Oleracea ◽

Azadirachta Indica ◽

Plutella Xylostella ◽

Jatropha Curcas

Avaliou-se a toxicidade de extratos de sementes de Azadirachta indica (Neen) e de Jatropha curcas (Pinhão manso) à Plutella xylostella (Traça das crucíferas). Discos foliares de couve (Brassica oleracea var. acephala) cultivar Portuguesa foram imersos nos extratos de Neen e Pinhão manso nas concentrações de 0,5 % e, depois, fornecidos como alimento para as lagartas. Após isso, acompanhou-se o seu ciclo biológico. Todas as fases de desenvolvimento do inseto investigadas foram afetadas pela aplicação de óleos vegetais de A. indica e J. curcas. A aplicação de óleos vegetais de A. indica e J. curcas reduz a sobrevivência da praga.

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