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| Registros recuperados: 11 | |
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| Ortiz U,Ana; Silva A,Gonzalo; Urbina P,Angélica; Zapata S.M,Nelson; Rodríguez M,J. Concepción; Lagunes T,Angel. |
| The maize weevil (Sitophilus zeamais Motschulsky) is one of the most widespread pests and causes heavy losses of stored grain throughout the world. Control of this insect is primarily dependent upon continued applications of organophosphorus and pyrethroid insecticides and fumigants as phosphine but the increasing problems with current insecticides drive the need for research and to develop new control methods. The insecticidal effect of leaf powder of tepa, Laureliopsis philippiana (Looser) Shodde, was evaluated against maize weevil under laboratory conditions. The parameters evaluated were adult mortality and emergence, grain weight loss and germination, and residual, repellent and fumigant effect. The highest levels of insect mortality were registered... |
| Tipo: Journal article |
Palavras-chave: Stored grains; Botanical insecticides; Maize weevil. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100011 |
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| Souza,Antonio P.; Marques,Maria R.; Mahmoud,Talal S.; Caputo,Bruno A.; Canhete,Gabriel M.; Leite,Carla B.; Lima,Dênis P. de. |
| This paper reports on an evaluation of the insecticidal activity of extracts prepared from leaves of Tapirira guianensis Aubl. (Anacardiaceae), Attalea phalerata (Mart. ex Spreng.) Burret (Arecaceae), Eugenia uniflora L. (Myrtaceae), and Gomphrena elegans Mart. (Amaranthaceae) and from stems of Myracrodruon urundeuva Allemão (Anacardiaceae). Four extracts and 18 fractions with a range of polarities were tested. Ten-gram batches of wheat grains were each nebulized with 1 mL of a separate extract at 10% w/v. After solvent evaporation at 38 ºC, the grains were placed into flasks along with 20 unsexed 10- to 20-day old adult individuals of Sitophilus zeamais. The assessment was carried out on the fifth and tenth day by counting and discarding the dead insects.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary metabolites; Insecticidal plant; Maize weevil; Sitophilus zeamais. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000400024 |
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| FAZOLIN, M.; COSTA, C. R. da; CAVALCANTE, A. S. da S.; ESTRELA, J. L. V.; ALBUQUERQUE, E. S. de; DAMACENO, J. E. de O.. |
| O Bioma Amazônia é reconhecido por sua relevância para o clima global e por sua alta biodiversidade, a qual apresenta imenso potencial para a produção de compostos secundários de plantas, que têm sido demandados tanto pela indústria, como também para uso nos cultivos orgânicos. Na transformação sustentável dessa biodiversidade, muitas vezes são obtidos produtos de aplicação prática na agropecuária, destacando-se os inseticidas botânicos. Nesse contexto faz-se necessário, na maioria das vezes, recorrer aos conhecimentos tradicionais, pela maneira peculiar como são construídos e passados às gerações que se sucedem. Mesmo considerando que houve, nas últimas duas décadas, incremento significativo de ações de pesquisa e desenvolvimento para obtenção de... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Inseticida botânico; Kangàrà kanê; Cipó vick; Tanaecium nocturnum; Benzaldeído; Ácido cianídrico; Mandelonitrila; Maize weevil; Gorgojo del maíz; Maiz; Plagas de plantas.; Sithophillus zeamais; Zea mais; Aceites essenciales; Benzaldehído; Cianuro de hidrógeno; Control químico; Granos almacenados; Insecticidas botánicos; Praga de planta; Praga de produto armazenado; Inseto; Milho; Gorgulho dos cereais; Inseticida; Controle químico; Fosfina; Controle biológico; Óleo essencial; Ácido prússico.; Plant pests; Corn; Stored grain; Chemical control; Phosphine; Botanical insecticides; Benzaldehyde; Hydrogen cyanide.. |
| Ano: 2009 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/661865 |
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| Caneppele,Maria Aparecida Braga; Caneppele,Carlos; Lázzari,Flávio Antonio; Lázzari,Sonia Maria Noemberg. |
| This experiment was carried out in order to evaluate the effect of Sitophilus zeamais on physical, physiological and sanitary quality of stored corn. Samples of 500 g of the hybrid OC-705, in three replicates, were conditioned in glasses covered with a screened lid, and kept in chamber at 25±2ºC, 70±5% RH and 12 h of photophase, for 150 days. The infestation levels were 0, 5, 15 and 50 adults/replicate, for the storage periods of 30, 60, 90, 120 and 150 days. The moisture content, classification, weight loss, germination and internal infestation were evaluated monthly. Significant inverse correlations were verified between the number of insects and both the germination and the weight loss; also between the internal infestation and the germination and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize weevil; Quality factors; Stored corn; Commercial grade. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000400015 |
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| Peschiutta,M.L; Arena,J.S; Ramirez Sanchez,A; Gomez Torres,E; Pizzolitto,R.P; Merlo,C; Zunino,M.P; Omarini,A.B; Dambolena,J. S; Zygadlo,J. A. |
| The insecticidal and antifungal properties of Mexican oregano (Lippia graveolens) essential oil from the Dominican Republic were investigated under laboratory conditions against two main pests of stored grains: Sitophilus zeamais and Fusarium verticillioides. Although oregano essential oil at 600 μl/l air did not result in a significant mortality of S. zeamais after 24 hours of exposure by fumigation, this essential oil was a powerful acetylcholinesterase (AChE) inhibitor in vitro. One of the main components of oregano essential oil, p-cymene, presented fumigant toxicity and AChE inhibition activity against the maize weevil. The L. graveolens essential oil antifungal activity against F. verticillioides was evaluated at 50, 100 and 200 µl/l, and it... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acetylcholinesterase inhibition; Fungal pathogen; Lippia graveolens; Maize pest control; Maize weevil. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2016000200003 |
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| FAZOLIN, M.. |
| No Brasil, as perdas de grãos durante o armazenamento têm atingido níveis médios de 20%. No Acre, devido as precárias condições de armazenamento e os fatores climáticos favoráveis ao desenvolvimento das pragas, os níveis de perdas são superiores a 30%. Os insetos têm sido os agentes responsáveis por essas perdas, causando prejuízos quantitativos determinados pela perda de peso e prejuízos qualitativos causados pela depreciação do produto devido a presença de ovos, larvas, pupas, adultos e alterações na composição química do produto, além de facilitar o desenvolvimento de micro-organismos. Nas condições locais, 35% do arroz armazenado é atacado pelo gorgulho (Sitophilus zeamais) e 65% pela traça (Sitotroga cereealella). No controle dessas pragas alguns... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Maize weevil; Angoumois grain moth; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Oriza sativa; Plagas de plantas; Control químico; Malatión; Plaguicidas.; Arroz; Praga de planta; Gorgulho dos cereais; Sitophilus zeamais; Traça dos cereais; Sitotroga cerealella; Controle químico; Inseticida; Campo Experimental.; Rice; Plant pests; Chemical control; Pesticides; Malathion.. |
| Ano: 1986 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492345 |
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| Betancur R,Jessica; Silva A,Gonzalo; Rodríguez M,J. Concepción; Fischer G,Susana; Zapata S.M,Nelson. |
| In stored grains, the main agents diminishing production are insects, which can produce losses between 20% and 80% before harvest or under storage. The insecticidal properties of the essential oil of fresh leaves of Peumus boldus Molina against maize weevil (Sitophilus zeamais Motschulsky) adults were determined under laboratory conditions. The highest mortality (100%) was achieved at 4% concentration by contact with a treated glass surface. The same concentration in impregnated corn (Zea mays L.) grain, resulted in 98.7% mortality. Mortality by fumigant action at 6 h was 100% with 35 µL oil in 0.15 L (air volume). Concentrations 1, 2 and 4% of essential oil produced 0% F1 adult emergence. At 10 d of residual effect, the 4% concentration reached 63.7%... |
| Tipo: Journal article |
Palavras-chave: Maize weevil; Boldus; Stored grains; Botanical insecticides. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300007 |
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| Bustos-Figueroa,Gabriel; Osses-Ruiz,Francisco; Silva-Aguayo,Gonzalo; Tapia-Vargas,Maritza; Hepp-Gallo,Ruperto; Rodríguez-Maciel,J. Concepción. |
| The insecticidal properties of boldus (Peumus boldus Molina) powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky) were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence) and temperature (room temperature vs. 3 ºC) on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w) of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50) for all treatments was < 5 g kg-1, while LC90 was 11 g kg-1. Mixing corn grains with different insecticidal treatments did not affect maize germination. Temperature and aeration did not influence mortality of maize... |
| Tipo: Journal article |
Palavras-chave: Boldus; Maize weevil; Stored corn. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300007 |
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| Araújo,Alice M. N. de; Oliveira,José V. de; França,Solange M.; Navarro,Daniela M. do A. F.; Barbosa,Douglas R. e S.; Dutra,Kamilla de A.. |
| ABSTRACT This study had the following objectives: to identify and quantify the constituent compounds of essential oils from Cymbopogon winterianus Jowitt, Eucalyptus globulus Labill., Eucalyptus staigeriana F. Muell. ex F.M. Bailey, Foeniculum vulgare Mill., Ocimum basilicum L., Ocimum gratissimum L., and Piper hispidinervum C. DC., investigate their toxicity and repellency to S. zeamais and evaluate the toxicity of P. hispidinervum to immature S. zeamais. Individual tests for each essential oil were conducted with a completely randomized design with five concentrations for each oil and four replicates. Gas chromatography-mass spectrometry revealed the presence of citronellal in C. winterianus, 1,8-cineole in E. globulus, limonene in E. staigeriana,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative fumigant; Bioactivity; Lethal concentration; Maize weevil; Natural insecticide. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000500372 |
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| Ortiz U,Margarita; Silva A,Gonzalo; Tapia V,Maritza; Rodriguez M,J. Concepción; Lagunes T,Angel; Santillán-Ortega,Candelario; Robles-Bermúdez,Agustín; Aguilar-Medel,Sotero. |
| The maize weevil (Sitophilus zeamais Motschulsky) and the red flour beetle (Tribolium castaneum Herbst) are two key pests of stored-grain products worldwide. The insecticidal activity of boldo (Peumus boldus Molina) powder, liquid ethanolic and hexanic extracts against S. zeamais and T. castaneum were evaluated under laboratory conditions. The evaluated variables were mortality, emergence of adult insects (F1), and grain weight loss. The experimental design was completely randomized. The mortality in S. zeamais was 100% even at the lowest powder concentration (0.5% w/w), whereas emergence of F1 adult insects was 0% and grain weight loss was < 0.08%. For T. castaneum, only 8 and 16% w/w powder concentrations reached 100% mortality. The liquid ethanolic... |
| Tipo: Journal article |
Palavras-chave: Botanical insecticides; Stored grains; Maize weevil; Red flour beetle. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300007 |
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| Registros recuperados: 11 | |
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