scholarly journals 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

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

scholarly journals The Effects of Extracts of Lantana camara (L.) and Azadirachta indica (A. Juss) on the Population Dynamics of Plutella xylostella, Brevicoryne brassicae and Hellula undalis on Cabbage

2012 ◽  
Vol 1 (2) ◽  
pp. 229 ◽  
Author(s):  
P. K. Baidoo ◽  
J. I. Adam
Keyword(s):  
Population Dynamics ◽  
Plant Extracts ◽  
Azadirachta Indica ◽  
Plutella Xylostella ◽  
Block Design ◽  
Petroleum Ether Extract ◽  
Brevicoryne Brassicae ◽  
Lantana Camara ◽  
Leaf Extracts ◽  
Hellula Undalis

<p>The effects of ethanolic extract of neem, <em>Azadirachta indica</em> (Meliaceae), seeds and petroleum ether extract of <em>Lantana camara</em> leaves (Verbenaceae) on the populations of three cabbage pests, <em>Plutella xylostella</em>, <em>Brevicoryne brassicae</em> and <em>Hellula undalis</em> 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 (<em>P</em>&lt; 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 <em>A. indica</em> seeds and <em>L. camara</em> 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.</p>

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

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.

scholarly journals Behavioural responses of diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) to extracts derived from Melia azedarach and Azadirachta indica

2005 ◽  
Vol 95 (5) ◽  
pp. 457-465 ◽  
Author(s):  
D.S. Charleston ◽  
R. Kfir ◽  
L.E.M. Vet ◽  
M. Dicke
Keyword(s):  
Azadirachta Indica ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Feeding Deterrent ◽  
Botanical Insecticides ◽  
Melia Azedarach ◽  
Larval Behaviour ◽  
Control Programmes ◽  
The Impact ◽  
Higher Doses

AbstractThe impact of three different doses of botanical insecticide derived from the syringa tree, Melia azedarach and the neem tree, Azadirachta indica was tested on the behaviour of the diamondback moth, Plutella xylostella (Linnaeus). Both botanical insecticides had a significant impact on larval behaviour. At higher doses the extracts showed feeding deterrent activity, with larvae preferring the untreated sides of cabbage leaves and consuming less of the treated half of cabbage leaves. The botanical insecticides had less of an effect on the oviposition behaviour of P. xylostella moths. In laboratory and glasshouse trials, significantly fewer eggs were oviposited on the plants that had been treated with syringa extracts. Therefore, the syringa extracts appear to have a repellent effect. In contrast, when exposed to the neem extracts the moths did not discriminate between control plants and treated plants. Behavioural observation indicated that, despite the lower number of eggs oviposited on cabbage treated with syringa extracts, the moths chose cabbage treated with the highest dose of syringa more often than they chose control cabbage plants. Similar observations were found in cabbage plants treated with neem, moths chose the medium dose more often than they chose the control. Oviposition and feeding deterrent properties are important factors in pest control, and results from this study indicate that botanical insecticides have the potential to be incorporated into control programmes for P. xylostella in South Africa.

scholarly journals Aphidicidal potential of Azadirachta indica, Adhatoda vasica, Vitex negundo, Parthenium hysterophorus and Lantana camara against mustard aphid, Lipaphis erysimi Kaltenbach (Hemiptera:Aphididae)

2012 ◽  
Vol 4 (2) ◽  
pp. 181-186
Author(s):  
B. S. Chandel ◽  
Vimlesh Singh ◽  
S. S. Trevedi
Keyword(s):  
Azadirachta Indica ◽  
Untreated Control ◽  
Lantana Camara ◽  
Parthenium Hysterophorus ◽  
Lipaphis Erysimi ◽  
Seed Kernel ◽  
Vitex Negundo ◽  
Mustard Aphid ◽  
Adhatoda Vasica ◽  
Plant Products

Use of eco-friendly naturally occurring plant products in the management of the mustard aphid, Lipaphis erysimi Kaltenbach (Hemiptera:Aphididae) under laboratory conditions was carried out. The results revealed that the nymphs and adults mortality of mustard aphid varied significantly with three different concentrations (0.5, 1.0 and 2.0%) of five plant products. The mortality was high with seed kernel extracts of neem, Azadirachta indica killed nymphs and adults of L. erysimi (70.82 %) followed by leaves extracts of lagundi, Vitex negundo Linn. (69.40 %), leaves extract of Parthenium hysterophorus Linn. (65.38 %), leaves extract of arusa, Adhatoda vasica Nees. (55.81%), aerial parts of aripple, Lantana camara Linn. (51.70%) and untreated control (1.5 %), respectively. The seed kernel extracts of A. indica differed significantly from the remaining ones except V. negundo from which it does not differ significantly to one another. The effects of carrot grass, P. hysterophorus was recorded moderate aphidicidal action while L. camara caused the lowest mortality of nymphs and adults of L. erysimi among all treated natural products. Of the five plant products tested A. indica performed better under all the experimental conditions where as untreated control gave only 01.5% aphid mortality. The concentrations 2.0% are superior to concentration 1.0% and 0.5% concentrations. Similarly maximum aphid mortality was observed after 24 hours of exposure and minimum after 6hours. The exposure periods of 24 hours was significantly superior to 12 hours and 6 hours in both control and plant products.

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

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.

scholarly journals Management of Diamond Back Moth (Plutella xylostella) using Indigenous Isolated Granulovirus and Azadirachta indica

2020 ◽  
Vol 52 (2) ◽  
Author(s):  
Mubasher Ahmad Malik ◽  
amina Jam Nazeer Ahmad ◽  
Muhammad Jalal Arif ◽  
Jam Nazeer Ahmad
Keyword(s):  
Azadirachta Indica ◽  
Plutella Xylostella

scholarly journals Efeito de extratos aquosos de Azadirachta indica, Melia azedarach e Aspidosperma pyrifolium no desenvolvimento e oviposição de Plutella xylostella

Bragantia ◽  
2006 ◽  
Vol 65 (3) ◽  
pp. 447-457 ◽  
Author(s):  
Adalci Leite Torres ◽  
Arlindo Leal Boiça Júnior ◽  
Cesar Augusto Manfré Medeiros ◽  
Reginaldo Barros
Keyword(s):  
Azadirachta Indica ◽  
Plutella Xylostella ◽  
Melia Azedarach ◽  
Aspidosperma Pyrifolium

Foram avaliados a CL50 e o efeito de extratos aquosos de plantas na biologia, oviposição e período embrionário de Plutella xylostella L. (Lepidoptera: Plutellidae). Para determinação da CL50 foram utilizadas concentrações entre 0,03 e 0,8 % para amêndoas de Azadirachta indica (A. Juss.) 0,5 e 7,0 % para casca de Aspidosperma pyrifolium (Mart.) e 0,5 e 12,5 % para frutos de Melia azedarach (L.), obtendo-se as CL50 de 0,06; 2,17 e 2,90%, respectivamente. Verificou-se que os extratos aquosos de todas as espécies vegetais afetaram o desenvolvimento do inseto, principalmente na fase larval. Na fase de pupa, os extratos reduziram a massa e a viabilidade. Houve deformação de adultos para os extratos de A. pyrifolium e M. azedarach e o de A. indica causou maior porcentagem. Todos os extratos possuem efeito tóxico para ovos de P. xylostella, sendo dependente do aumento da concentração. Nos extratos da casca de A. pyrifolium, do fruto de M. azedarach e da amêndoa de A. indica observa-se ação ovicida quando usados na concentração letal de lagartas de primeiro ínstar da praga. Em observações do ovo de P. xylostella com auxílio de um microscópio eletrônico de varredura, verificou-se a existência de microporos onde pode ocorrer a penetração do produto ovicida, além da constatação da textura rugosa da casca do ovo que pode reter ou fixar os extratos.

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