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| Registros recuperados: 19 | |
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| Barrabí-Puerta,Mireisy; Arece-García,Javier. |
| Con el objetivo de evaluar la actividad antihelmíntica in vitro de extractos acuosos de hojas y semillas de Neem (A. indica) se diseñó un experimento que estudió el efecto de la adición del extracto acuoso en la eclosión de huevecillos y el desarrollo larvario de estrongílidos gastrointestinales. Se prepararon tres concentraciones de extractos acuosos (500, 250 y 125 mg/ml) a partir de hojas y semillas secadas a la sombra. Se realizó una prueba in vitro de eclosión de huevecillos y otra de inhibición del desarrollo larvario. El extracto de semilla fue más efectivo pues en dosis de 500 mg/ml logró reducir la eclosión de huevecillos en un 99.1% sin diferencias significativas (p<0.01) con el Albendazol y en un 88.8% el desarrollo de las larvas hacia L3.... |
| Tipo: Journal article |
Palavras-chave: Azadirachta indica; Neem; Haemonchus; Ovinos; In vitro. |
| Ano: 2013 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2013000200005 |
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| Kumar, Abhishek; DDU Gorakhpur University - India; Prasad, ManiRam; DDU Gorakhpur University - India; Mishra, Diwakar; DDU Gorakhpur University - India; Srivastav, Sunil Kumar; DDU Gorakhpur University - India; Srivastav, Ajai Kumar; DDU Gorakhpur University - India. |
| The acute static renewal test of a botanical pesticide - azadirachtin for the freshwater catfish, Heteropneustes fossilis has been performed to determine the LC50 values at different exposure period. The LC50 values at various exposure periods are 173.06 mg L-1 for 24h; 80.69 mg L-1 for 48h; 58.57 mg L-1 for 72h and 52.35 mg L-1 for 96h. The upper confidence limits were 196.87, 86.91, 79.20 and 70.04 mg L-1 for 24, 48, 72 and 96 h and lower confidence limits were 154.01, 74.24, 37.33 and 33.83 mg L-1, respectively. These results indicate that azadirachtin exposure to the fish caused toxic effects. |
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Palavras-chave: Neem; Azadirachtin; LC50; Heteropneustes fossilis; Fish Animal Morphology and Physiology; Toxicology Neem azadirachtin; LC50; Heteropneustes fossilis; Fish. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9455 |
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| OSPINA SALAZAR,Daniel Iván; HOYOS SÁNCHEZ,Rodrigo Alberto; OROZCO SÁNCHEZ,Fernando; ARANGO ARTEAGA,Myrtha; GÓMEZ LONDOÑO,Luisa Fernanda. |
| In order to assess the antifungal activity of methanolic extracts from neem tree (Azadirachta indica A. Juss.), several bioassays were conducted following M38-A2 broth microdilution method on 14 isolates of the dermatophytes Trichophytonmentagrophytes, Trichophyton rubrum, Microsporum canis and Epidermophyton floccosum. Neem extracts were obtained through methanol-hexane partitioning of mature green leaves and seed oil. Furthermore, high performance liquid chromatography (HPLC) analyses were carried out to relate the chemical profile with their content of terpenoids, ofwidely known antifungal activity. The antimycotic Terbinafine served as a positive control. Results showed that there was total growth inhibition of the dermatophytes isolates at minimal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HPLC; Neem; Microbial sensitivity tests; Minimum inhibitory concentration; Terpenoids. |
| Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000300017 |
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| FAZOLIN, M.; ESTRELA, J. L. V.; LIMA, A. P. de; ARGOLO, V. M.. |
| Avaliou-se a atividade inseticida de extratos aquosos e alcoólicos de várias partes de plantas de 13 espécies vegetais, exóticas e nativas da Amazônia brasileira, em adultos de Cerotoma tingomarianus. Os extratos foram testados em diferentes concentrações e modo de preparo, sendo pulverizados em plantas de feijão comum (Phaseolus vulgaris cv. Pérola). Os parâmetros avaliados foram efeito deterrente para alimentação e mortalidade. A rotenona a 0,13% mostrou-se promissora para o controle de C. tingomarianus, não apenas por causar mortalidade do inseto (26,8%), como também pelo efeito deterrente de alimentação. O óleo de andiroba, nas concentrações 1,5% e 1,0%, raízes em infusão de P. alliacea a 2%, nim a 7%, sementes de cinamomo a 12% e folhas em infusão de... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Vaquinha do feijoeiro; Cerotoma tingomarianus; Guiné; Guinea hen weed; Neem; Melia toosendan; Bracken fern; Nuez del Brasil; Copaifera spp; Erythrina spp; Aceites essenciales; Frijoles; Plagas de las plantas.; Pimentón; Insecticidas botánicos; Timbó; Praga de planta; Inseticida de origem vegetal; Erva de Santa Maria; Chenopodium ambrosioides; Nim; Azadirachta indica; Cinamomo; Melia azedarach; Piper hispidinervum; Andiroba; Carapa guianensis; Castanha do pará; Bertholletia excelsa; Copaíba; Derris; Óleo essencial; Feijão; Phaseolus vulgaris.; Pimenta; Piper nigrum; Samambaia dos pastos; Pteridium aquilinum; Pimentão; Capsicum annuum; Pimenta longa; Brazil nuts; Botanical insecticides; Plant pests; Essential oils; Petiveria alliacea; Beans.; Paprika. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/495907 |
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| Rodrigues,Marcelo; Festucci-Buselli,Reginaldo Alves; Silva,Luzimar Campos; Otoni,Wagner Campos. |
| The use of cell and plant tissues culture techniques to produce economically important active metabolites has been growing. Among these substances, azadirachtin (AZA), produced by the neem tree (Azadirachta indica), has received considerable attention due to its bioinsecticide action. The main goal of this work was to analyze the AZA levels in neem cotyledonary calli. The calli were grown in agitated Woody Plant Medium (WPM) liquid medium, supplemented with glucose (Gl), hydrolyzed casein (HC) and methyl jasmonate (MeJ) as elicitor agent. An interaction was observed between these substances, depending on in vitro cultivation time with orbital agitation. The highest concentrations (average of 0.2470 µg g-1) of AZA were produced in the first and second weeks... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neem; HPLC; Glucose; Hydrolysed casein; Methyl jasmonate. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200001 |
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| Esparza-Díaz,Gabriela; López-Collado,José; Villanueva-Jiménez,Juan A.; Osorio-Acosta,Francisco; Otero-Colina,Gabriel; Camacho-Díaz,Eloy. |
| La preparación de bioinsecticidas efectivos a base de neem (Azadirachta indica A. Juss.) requiere extraer y concentrar sus activos, debido a que no se encuentran en altas cantidades de forma natural. Para ello se compararon los extractos de neem por extrusión simple, extrusión metanólica en frío (metanólico), Soxhlet-hexano (hexánico) y acuosa (acuoso) en cuanto a la concentración de azadiractina (AZA) y su efectividad insecticida sobre Aphis gossypii Glover, así como posibles efectos tóxicos sobre Ixora coccinea L. El diseño experimental fue completamente al azar, se realizó un análisis de varianza con los datos y las medias se compararon con la prueba de Tukey (p≤0.05). Los análisis de los extractos por HPLC mostraron concentraciones significativamente... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extracto metanólico; Neem; Tetranortriterpenoide. |
| Ano: 2010 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000700008 |
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| Vicentini,Victor Bernardo; Pratissoli,Dirceu; Queiroz,Vagner Tebaldi de; Costa,Adilson Vidal; Pinheiro,Patrícia Fontes; Zinger,Fernando Domingo; Rondelli,Vando Miossi. |
| Plant extracts have been studied as a promising source of natural insecticides. This study assessed the effect of the ethanol extract of Cymbopogon winterianus Jowitt (citronella grass) in comparison with an insecticide containing azadirachtin (ICA) on mortality and number of eggs of Tetranychus urticae Koch (Acari: Tetranychidae) in laboratory conditions. For the tests, the mites were sprayed with the aid of a Potter spray tower. To assess the mortality of females, LC50 value for extract of citronella grass and ICA was, respectively, 2.63 and 2.83%. With respect to the number of eggs, the greatest reduction was observed at a concentration of 5% for the evaluation period of 120h, both for the extract of citronella grass (86%) and for ICA (81%). These... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Two-spotted spider mite; Alternative control; Neem; Plant extracts. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701154 |
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| Martinez,Sueli S.; van Emden,Helmut F.. |
| Azadirachtin is the most effective compound of the neem tree, Azadirachta indica A. Juss, with insecticidal and growth disruption properties on several species of insects. Its effects on the development and survival of Spodoptora littoralis (Boisduval) were studied under laboratory conditions. Third-instar larvae were individually fed on artificial diet treated with azadirachtin (from 0.01 ppm to 1 ppm wt/v), for two days, and transferred to plain diet. Survival, duration of stages and deformities were recorded daily. In a second experiment, the effects of azadirachtin on 3rd instar larvae and on last instar larvae were compared, by feeding the larvae with treated diet (0.3 ppm, 0.6 ppm and a control group), during the same period. A two-day feeding period... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Neem; Azadirachta indica; Botanical insecticide; Larva-pupa intermediate. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000100017 |
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| Banerjee,K.; Gadani,M.H.; Srivastava,K.K.; Verma,Neelam; Jasrai,Y.T.; Jain,N.K.. |
| To optimize nursery practices for efficient plant production procedures and to keep up to the ever growing demand of seedlings, identification of the most suitable species of arbuscular mycorrhizal fungi (AMF), specific for a given tree species, is clearly a necessary task. Sixty days old seedlings of Neem (Azadirachta indica A. Juss) raised in root trainers were inoculated with six species of AMF and a mixed inoculum (consortia) and kept in green house. Performances of the treatments on this tree species were evaluated in terms of growth parameters like plant height shoot collar diameter, biomass and phosphorous uptake capabilities. Significant and varied increase in the growth parameters and phosphorous uptake was observed for most of the AMF species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arbuscular mycorrhizal fungi; Neem; Glomus mosseae; Glomus intraradices. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200039 |
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| Efrom,Caio Fábio Stoffel; Redaelli,Luiza Rodrigues; Meirelles,Rafael Narciso; Ourique,Cláudia Bernardes. |
| This study aimed to evaluate the effects of pesticides, used in the organic system, on Apis mellifera under laboratory conditions. Four multiple (0.25x, 0.5x, 1x and 2x) concentrations as recommended by they manufacturers of the following products: Rotenat CE®, Pironat®, Biopirol 7M®, Organic neem®, Natuneem® and lime sulfur were tested by topical application and ingestion. Of all the products and concentrations tested, only the lime sulfur (5000 ml 100L-1 and 10000 mL 100L-1 of water) by ingestion, and Rotenat CE® (1200ml 100L-1 of water) on topical application were considered slightly harmful for A. mellifera, as the classification of IOBC/WPRS for the laboratory tests. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Honeybees; Rotenone; Lime sulfur; Neem; Pyroligneous extract. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100005 |
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| Lopes,Everaldo Antônio; Ferraz,Silamar; Ferreira,Paulo Afonso; Freitas,Leandro Grassi de; Dallemole-Giaretta,Rosangela. |
| Greenhouse experiments were conducted to evaluate the effect of soil amendment with chopped (1cm²) or ground (1mm sieve) dry leaves of assa-peixe (Vernonia polyanthes), lemon-grass (Cymbopogon citratus), eucalyptus (Eucalyptus citriodora), castor (Ricinus communis), mango (Mangifera indica) or neem (Azadirachta indica) for the control Meloidogyne javanica. Into the soil (Yellow red oxisol) of each pot were added leaves (5g kg-1 of soil) and 5,000 eggs of the nematode. After seven days, one tomato seedling "Santa Cruz Kada" was transplanted to each pot. The tomato root weight, galls and eggs/root system were determined 60 days after transplant. None of the soil amendments reduced gall or eggs, when applied as leaf pieces. However, all tested plant species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Root-knot nematodes; Organic amendment; Castor; Neem; Eucalyptus; Lemon-grass; Mango and assa-peixe. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000600003 |
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| Roel,Antonia Railda; Dourado,Doroty M.; Matias,Rosemary; Porto,Karla R. A.; Bednaski,Aline V.; Costa,Reginaldo B. da. |
| The fall armyworm, Spodoptera frugiperda, is one of the major field pests for maize production. It is mainly controlled by means of synthetic, and more recently by resistant cultivar of maize expressing Bt toxins. The neem tree, Azadirachta indica, is a plant that can potentially control insects with the advantage of being food and environmental safe. The aim of this study was to assess the effect of neem oil on the development and survival of S. frugiperda caterpillars by assessing histological alterations caused on their midgut. Newly hatched caterpillars were submitted to three neem oil concentrations: 0.006; 0.05; 0.4%, which were added to their artificial diet. Ten 3rd instar caterpillars, taken from each treatment, were submitted to histological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fall armyworm; Histological analysis; Insecticidal plants; Neem. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300024 |
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| Registros recuperados: 19 | |
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