Bio-Efficacy Of Some Plant Leaf Extracts Against Mustard Aphid, Lipaphis Erysimi Kalt. On Indian Mustard, Brassica Juncea

Ali, Abid; Rizvi, Parvez Qamar; Khan, Farmanur Rahman

doi:10.2478/v10045-010-0022-4

Cited by 25 publications

(15 citation statements)

References 5 publications

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“…Os tratamentos constituíram-se dos seguintes extratos: óleo essencial de nim na dose de 100 mL para 20 litros de água; o tratamento com o Canudo (Ipomoea carnea subsp. fistulosa), utilizando folhas e frutos na proporção de ½ como partes da planta, sendo secas a sombra e Triturado, 30 g do material seco diluído em 100 mL de água, homogeinizado em liquidificador, adicionando-se 1,0 litro de álcool etílico absoluto PA, após 24 horas de repouso, diluído a 5% em água, para cada mL da solução (MOHAPATRA; PONNUNASAN; NANAYANASAMY, 2010; SUJATHA; JOSEPH; SUMI, 2010); a Mamona (Ricinus communis L.), utilizado folhas e frutos (proporção de ½) secos à sombra, triturados, utilizando solvente álcool etílico absoluto PA adicionando-se 200 ml para 100 gramas do material triturado, filtrado após 24 horas e diluído a 10% em água destilada (RODRIGUEZ, 2000;SANTIAGO et al, 2008); o Cardo -santo (Argemone mexicana L.) foi utilizado folhas e flores (proporção de ½) secos à sombra, 30 gramas adicionando-se a 300 mL de água quente a 100 ºC por 60 min (ALI; RIZVI; KHAN, 2010;KULKARNI et al, 2009), sendo o material vegetal de canudo, mamona e cardo-santo colhidos no Campus III da UNEB, Juazeiro-BA; o Tinguí (Mascagnia rigida Griseb) foram utilizados folhas, secas à sombra e infusão de 50 gramas em 1.000 mL de água (RODRIGUES et al, 2008), o material foi colhido no Município de Curaçá-BA. Na testemunha foi utilizada água.…”

Section: Methodsunclassified

Avaliação de extratos vegetais no controle de mosca-branca, Bemisia tabaci biótipo B em abóbora

Lima¹,

Moreira²,

Aragão³

2013

Rev. Ciênc. Agron.

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RESUMO -A abóbora (Cucurbita moschata Duch.) é uma cultura de importância para a agricultura familiar da região Nordeste do Brasil. No entanto, a ocorrência do prateamento das folhas da aboboreira ocasionado pela mosca-branca, Bemisia tabaci biótipo B limita sua produção, causando prejuízos aos agricultores. O objetivo deste trabalho foi avaliar a eficiência de extratos vegetais sobre o nível populacional de ninfas de mosca-branca em abóbora cv. Jacarezinho. O experimento foi instalado em campo experimental, em blocos casualizados, constituído de seis tratamentos e três repetições. As aplicações dos extratos vegetais foram feitas com intervalo de sete dias, fazendo-se uso de substâncias extraídas das seguintes plantas: Palavras-chave: Abóbora. Inseticidas vegetais. Pragas agrícolas-controle.ABSTRACT -The squash (Cucurbita moschata Duch.) is an important crop for family farmers in the northeast of Brazil. However, the occurrence of leaf silvering caused by the whitefly, Bemisia tabaci biotype B, limits production, causing losses to farmers. The aim of this study was to evaluate the efficiency of plant extracts on the population levels of whitefly nymphs on the squash cv. Jacarezinho. The experiment was conducted at an experimental field, in a randomized block design consisting of six treatments and three replications. Applications of plant extracts were made at an interval of seven days, making use of substances extracted from the following plants: Ipomoea carnea subsp. Fistulosa, castor bean (Ricinus communis L.), Tingui (Mascagnia rigida Griseb), cardo-santo (Argemone mexicana L.), and the commercial oil product Natuneem ®. All of the plant extracts were efficient in the control of the B. Tabaci nymphs, with R. communis (75.49%), M. rigida (73.99%), I. carnea (72.24%), neem oil (70.4%) and A. mexicana (69.16%).

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Section: Methodsunclassified

Avaliação de extratos vegetais no controle de mosca-branca, Bemisia tabaci biótipo B em abóbora

Lima¹,

Moreira²,

Aragão³

2013

Rev. Ciênc. Agron.

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“…Among the compounds that are synthesized by the secondary metabolism of plants, terpenoids are a rich source of bioactive molecules that exhibit toxicity to various pests (Ali et al, 2010;Lima et al, 2013;Lima et al, 2009;Silva et al, 2010). Some studies have shown that these compounds act as inhibitors of AChE, impair oviposition (Alexenizer;Dorn, 2007;Cavalcante;Vasconcelos, 2006) and cellular respiration (Yu, 2008) and act as synergists of other bioactive agents (Fazolin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Ocimum basilicum essential oil combined with deltamethrin to improve the management of Spodoptera frugiperda

et al. 2017

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For an important and expensive crop such as corn, the resistance of Spodoptera frugiperda J.E. Smith to various pesticides has led to research throughout the world for a potential insecticide from a natural source. For the management of pest resistance, natural compounds associated with synthetic insecticides can be a promising tool because they can reduce the application of the synthetics molecules while maintaining their effectiveness and promoting the control of the pests. Linalool is a potential insecticide that is easily obtained because it is found in high concentrations in the essential oil of Ocimum basilicum L. Therefore, the present study aimed to evaluate the toxicity of this essential oil and its combination with deltamethrin to control S. frugiperda. Through dose response assays, the acute toxicities (LD 50 ) of the essential oil and deltamethrin were estimated. Additionally, the combination of these materials was also assessed, attaining a reduction of 80% of the LD 50 of deltamethrin while obtaining the same result as when the pyrethroid was administered alone. From these results, it is expected that the combination of natural compounds and synthetic insecticides will be a promising practice, helping to manage resistance while reducing the environmental impact of toxic compounds.Index terms: Natural insecticides; linalool; fall armyworm; pyrethroid; synergism. RESUMOPara uma cultura importante e expressiva como o milho, a resistência de Spodoptera frugiperda J.E. Smith a vários inseticidas atraiu a atenção no mundo para pesquisar o potencial inseticida de compostos naturais. Para o manejo da resistência, os compostos naturais associados a inseticidas sintéticos podem ser uma ferramenta promissória por reduzirem a aplicação das moléculas sintéticas para que não percam sua eficácia, além de promover o controle das pragas. O linalol é um terpenoide considerado como inseticida potencial, pode ser facilmente obtido naturalmente uma vez que é encontrado em alta concentração no óleo essencial de Ocimum basilicum. Portanto, o presente estudo teve como objetivo avaliar a toxicidade deste óleo essencial e sua combinação com deltametrina no controle de Spodoptera frugiperda. Através do ensaio de dose-resposta, foi estimada a toxicidade aguda (DL50) do óleo essencial e da deltametrina. Adicionalmente, foi também avaliada a combinação entre ambos, alcançando uma redução de 80% da DL 50 de deltametrina para se obter o mesmo resultado quando o piretroide foi administrado sozinho. A partir dos nossos resultados, espera-se que uma combinação de uso de compostos naturais e inseticidas sintéticos possa ser uma prática promissora, auxiliando no manejo da resistência de pragas e principalmente reduzindo os impactos ambientais de compostos tóxicos.

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“…Although, the water extract ranked third, its aphicidal activity was not significantly different from that of the mixture extract (Table 3) and this was an encouraging outcome as it implies that the extract method that is employed by resource-poor farmers (water) is just as effective as the one derived from organic solvents. The efficiency of water extracts of T. minuta was also demonstrated by Ali et al (2010) who found that an aqueous extract of T. minuta leaves at concentration of 1:2.5 g/ml (w/v) was quite effective, reducing mustard aphid, Lipaphis erysimi Kalt. by 96% when sprayed on Indian mustard plots.…”

Section: Discussionmentioning

confidence: 82%

Laboratory assessment of insecticidal properties of Tagetes minuta crude extracts against Brevicoryne brassicae on cabbage

Phoofolo¹

2013

J. Entomol. Nematol.

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The cabbage aphid, Brevicoryne brassicae is one of the most serious insect pests of cabbage in Lesotho. Chemical insecticides for efficient control of this pest are often unaffordable for resource-poor farmers. As a first step in a search for effective pest management techniques that can be affordable and easily available to these farmers, the aphicidal activities of Tagetes minuta crude extracts were evaluated against the cabbage aphid. A comparison was made on lethal and sub-lethal effects of T. minuta crude extracts from acetone, methanol, water and a mixture of acetone/methanol/water (7:7:1, v:v). The solvent system that produced the most toxic extract was the mixture, followed by methanol and water, whereas acetone produced the least toxic extract. The sub-lethal effect on cabbage aphid fecundity was well described by linear regression equations that showed significant reduction in fecundity as the concentration of crude extracts increased. The extract from the mixture solvent system had the strongest effect on fecundity.

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Bio-Efficacy Of Some Plant Leaf Extracts Against Mustard Aphid, Lipaphis Erysimi Kalt. On Indian Mustard, Brassica Juncea

Cited by 25 publications

References 5 publications

Avaliação de extratos vegetais no controle de mosca-branca, Bemisia tabaci biótipo B em abóbora

Avaliação de extratos vegetais no controle de mosca-branca, Bemisia tabaci biótipo B em abóbora

Ocimum basilicum essential oil combined with deltamethrin to improve the management of Spodoptera frugiperda

Laboratory assessment of insecticidal properties of Tagetes minuta crude extracts against Brevicoryne brassicae on cabbage

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