|
|
|
| Registros recuperados: 42 | |
|
|
| Silva, Abimael Gomes; Souza, Ana Caroline de; Lopes, Beatriz Garcia; Silva, Eliamara Marques da; Vieira, Gustavo Haralampidou da Costa. |
| O uso de fungicidas sintéticos é uma das estratégias de manejo de doenças mais utilizadas na agricultura, porém, busca-se manejos que sejam mais sustentáveis. Dessa forma, objetivou-se avaliar o potencial de óleos essenciais de Cedrela fissilis e Mentha spicata no controle, in vitro, do crescimento micelial do patógeno Corynespora cassiicola. O trabalho foi desenvolvido no Laboratório de Fitossanidade da Universidade Estadual do Mato Grosso do Sul (UEMS), Unidade Universitária de Cassilândia-MS. Os óleos essenciais, Cedro (Cedrela fissilis) e Hortelã (Mentha spicata) foram adquiridos comercialmente. O delineamento experimental utilizado foi inteiramente casualizado, em esquema fatorial 2 categorias de óleos essenciais (hortelã e cedro) x 5 concentrações... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytopathology; Fungicide resistance; Alternative control; Fitopatologia; Resistência a fungicidas; Controle alternativo. |
| Ano: 2021 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6375 |
| |
|
|
| Pinto, Ezio Santos; Universidade Federal Rural de Pernambuco; Barros, Eduardo Moreira; Universidade Federal Rural de Pernambuco; Torres, Jorge Braz; Universidade Federal Rural de PernambucoUFRPE; Neves, Robério Carlos dos Santos; Universidade Federal Rural de Pernambuco. |
| The cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae), is a key pest of cotton, irrespective of the use of conventional or organic management. In organic systems, however, the use of synthetic insecticides is not allowed, increasing the difficulty of controlling this pest. This work evaluated aphid control and the ability of products to prevent aphid infestation using natural insecticides compared to a standard synthetic insecticide. The control trial was conducted with four products [Beauveria bassiana (Boveril®), neem oil (Neemseto®), and cotton seed oil compared to thiamethoxam (Actara®)], and untreated plants served as the control group. The trial testing the efficacy of these products in preventing aphid infestation was conducted... |
| Tipo: Experimetno |
Palavras-chave: Ciências Agrárias Insecta; Organic cotton; Cotton aphid; Alternative control; Population growth rate Fitossanidade. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15764 |
| |
|
| |
|
|
| Barbosa, Flávia Silva; Universidade Federal de Minas Gerais; Leite, Germano Leão Demolin; Universidade Federal de Minas Gerais; Paulino, Marney Aparecida de Oliveira; Universidade Federal de Minas Gerais; Guilherme, Denilson de Oliveira; Universidade Federal de Minas Gerais; Maia, Janini Tatiane Lima Souza; Universidade Federal de Minas Gerais; Fernandes, Rodrigo Carvalho; Universidade Federal de Minas Gerais. |
| The objective of this work was to evaluate the insecticidal effect or repellency of Cyperus rotundus, an important weed plant, through alternative methods of extraction, on Diabrotica speciosa, a pest that affects several plant species. The experimental design was completely casual, and consisted of five repetitions. The C. rotundus extracts were prepared using leaves and roots by alcoholic extraction, aqueous (hot water) extraction and aqueous (cold water) extraction and diluted to four different concentrations (0, 5, 10, and 15% of the volume of each extract). These dilutions were then tested and compared with a control. The higher mortality of D. speciosa adults as well as a smaller leaf consumption area were observed after treatments with increasing... |
| Tipo: Pesquisa Empírica de laboratório |
Palavras-chave: 5.01.02.00-1 Rootworm; Nutgrass; Chrysomelidae; Alternative control 5.01.02.02-8 Rootworm; Nutgrass; Chrysomelidae; Alternative control. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6902 |
| |
|
|
| Ponzo,Francine Scolfaro; Benato,Eliane Aparecida; Silva,Barbara Marçon Pereira da; Cia,Patrícia. |
| ABSTRACT The aim of this study was to evaluate the effects of ethanol on the control of Colletotrichum spp. in ‘Kumagai’ guava and on the fruit physical-chemical attributes. For this purpose, three assays were carried out. For the first assay, fruit were exposed to ethanol vapor (0, 1, 2, 4, and 8 mL∙kg-1), applied in hermetic containers. On the second, ethanol was applied by immersion for 2 minutes in different concentrations (20, 30, 40, and 50%). On the last assay, fruit were immersed in 30, 40, and 50% ethanol for 2, 5, and 10 minutes. Fruit that were not exposed to volatile (first assay) or water treated (second and third assay) were used as control. In all assays, guavas were first inoculated with a conidial suspension of Colletotrichum spp. and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava. Colletotrichum spp.; Alternative control; Ethylic alcohol. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100160 |
| |
|
| |
|
|
| Darolt,Josiane Cecília; Rocha Neto,Argus Cezar da; Di Piero,Robson Marcelo. |
| Abstract Apple is one of the most important temperate fruit to Brazil economy, and the use of synthetic chemicals has been the main method for reducing postharvest diseases, such as the blue mold, caused by Penicillium expansum. This work intends to evaluate the practical utilization of chitosan for blue mold control. For this purpose, fruits were treated in a preventive and curative way, immersing the fruits in chitosan solution (5 or 10 mg mL-1), or adding a single drop of this solution (10 mg mL-1) directly into the injuries. The eradicative effect of the polysaccharide was also evaluated in vitro and in vivo. Chitosan did not show a curative effect against the blue mold, and its eradicative effect was only evidenced on the higher concentration (10 mg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial activity; Alternative control; Chitosan; Malus domestica; Polysaccharide. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000401014 |
| |
|
|
| Ramos,Vinicius; Alves,Dejane; Braga,Mariana; Carvalho,Geraldo; Santos,Custódio. |
| The search for alternative methods aiming to the control of agricultural pests that cause less environmental impact has been a recurring theme in several studies. For this purpose, the factors influencing the extraction and isolation of the trypsin inhibitor found in castor-bean (Ricinus communis L.) cake and seeds were studied, and its effect on the development of fall armyworm Spodoptera frugiperda (Smith, 1797) was evaluated. Therefore, the type and proportion of the solvent (w/v), extraction period and oil content were evaluated. The castor-bean cake extract with oil content of 20% in water at a ratio 1:40 (w/v) for 30 min showed the greatest trypsin inhibition, with 21.23 mUTI g-1 seed. The isolation of the trypsin inhibitor contained in the extract... |
| Tipo: Journal article |
Palavras-chave: Zea mays; Fall armyworm; Ricinus communis; Trypsin inhibitor; Alternative control. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200007 |
| |
|
|
| Pereira,Ricardo Borges; Lucas,Gilvaine Ciavareli; Perina,Fabiano José; Alves,Eduardo. |
| Rust is considered the most important disease in coffee because it causes severe defoliation in plants and, consequently, reduction in productivity. This study evaluated the in vitro effect of essential oils of cinnamon, citronella, lemongrass, clove, tea tree, thyme, neem and eucalyptus on the germination of urediniospores of Hemileia vastatrix; the effectiveness of these oils to control rust on seedlings of coffee cultivars Catucaí 2SL, Catuaí IAC 62 and Mundo Novo 379/19 in the greenhouse; and the effect of more promising oils on urediniospores of H. vastatrix by transmission electron microscopy (TEM). All the essential oils inhibited the germination of urediniospores with increasing concentrations. All oils promoted partial control of the disease in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hemileia vastatrix; Alternative control; Transmission electron microscopy. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000100002 |
| |
|
|
| Pereira,Ricardo Borges; Lucas,Gilvaine Ciavareli; Perina,Fabiano José; Resende,Mário Lúcio Vilela de; Alves,Eduardo. |
| The objectives of this work were to assess the in vitro effect of essential oils extracted from cinnamon, citronella, lemon grass, India clove, tea tree, thyme, neem and eucalyptus on the conidia germination and on mycelial growth of Cercospora coffeicola, and their efficacy to control the brown eye spot in coffee seedlings (cultivars Catucaí 2SL, Catuaí IAC 62 and Mundo Novo 379/19) in a greenhouse, as well as their effects on the initial germination and infection events by scanning electron microscopy. All essential oils promoted the inhibition of conidia germination with increasing concentrations. India clove, cinnamon, neem, thyme and lemon grass oils inhibited the mycelial growth of C. coffeicola. The cinnamon and citronella oils were the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Cercospora coffeicola; Alternative control. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000100014 |
| |
|
|
| Lorenzetti,Eloisa; Tartaro,Juliano; Stangarlin,José Renato; Kuhn,Odair José. |
| ABSTRACT Corn is a cereal whose productivity can be reduced by various diseases which has recommended treatments for control. The objective of this study was to analyze copper, zinc, calcium and manganese products for the management of Pantoea ananatis, Puccinia polysora and Cercospora zeae maydis in second season corn, and interference in agronomic characteristics. Commercial products made of amino acid chelated with 15% calcium, 5% copper, 15% manganese and 10% zinc, at the doses of 0.5 kg ha-1, 0.3 L ha-1, 0.4 kg ha-1 and 1 L ha-1, respectively, a treatment with fungicide (20% azoxystrobin and 8% cyproconazole at 0.3 L ha-1 + 25% propiconazole at 0.4 L ha-1), and a treatment with water were assayed. The experiments were carried out under field... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative control; Nutrition; Zea mays L.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100208 |
| |
|
|
| SILVA,Flávia Fernanda Alves da; ALVES,Cassia Cristina Fernandes; OLIVEIRA FILHO,Josemar Gonçalves de; VIEIRA,Tatiana Manzini; CROTTI,Antônio Eduardo Miller; MIRANDA,Mayker Lazaro Dantas. |
| ABSTRACT Besides their value as therapeutic resources, medicinal plants may also be used as sources of active ingredients against phytopathogens. Fungi can grow and cause spoilage in food, thus, resusting in decrease in its quality and quantity. This research aimed at evaluating the effect of essential oil from Murraya paniculata (ML-EO) leaves on mycelial growth of Sclerotinia sclerotiorum, a fungus that poses high risk to several cultures, mainly soybean. Essential oil from M. paniculata (Rutaceae) leaves was obtained by hydrodistillation which was carried out by a Clevenger-type apparatus while its chemical composition was analyzed by GC-FID and GC-MS. β-Caryophyllene (23.8%), α-zingiberene (21.0%) and β-cubebene (10.2%) were the main constituents... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytopathogen; Rutaceae; Soybean; Alternative control; Plant disease. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600413 |
| |
|
|
| Teixeira,Glauco Antonio; Alves,Eduardo; Amaral,Douglas Carvalho; Machado,José da Cruz; Perina,Fabiano José. |
| Stem and ear rot caused by Stenocarpella maydis are responsible for severe losses in maize production. Treatment of seeds with fungicides may induce environmental damage. Hence, this study aimed to evaluate the effects of essential oils extracted from Cymbopogon winterianus, Thymus vulgaris, Cymbopogon citratus, Corymbia citriodora, Cinnamomum zeylanicum, and Syzygium aromaticum on the development of in vitro S. maydis. In addition, maize seeds were treated with these essential oils to determine their possible mode of action and effects. The oils from S. aromaticum, C. zeylanicum, and T. vulgaris inhibited fungal development at concentrations higher than 0.025%. The oils from S. aromaticum and C. zeylanicum showed seed germination rates of 89.0% and 84.5%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stenocarpella maydis; Zea mays; Alternative control; Electron microscopy. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001100004 |
| |
|
| |
|
|
| Jaski,Jonas Marcelo; Telaxka,Fabio Junior; Moura,Gabriela Silva; Franzener,Gilmar. |
| ABSTRACT: The aim of this study was to evaluate the ethanolic extract of green propolis (EEP) in the protection of common bean plants against two main bacterial cultures, bacterial blight (Xanthomonas axonopodis pv. phaseoli) and wildfire (Pseudomonas syringae pv. tabaci). Experiments on antimicrobial activity were performed, inducing phytoalexins, defense-related enzymes, and disease severity, under concentrations of 0, 0.5, 1.0, 2.5, and 5.0%. The EEP presented antimicrobial activity on both phytobacteria, causing a decrease in their development. It has also promoted a linear accumulation of phaseolin in bean hypocotyls according to the EEP concentration used. There was a reduction in the lesion area, which was caused by bacterial blight on bean leaves... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative control; Wildfire; Bacterial blight; Resistance induction. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600151 |
| |
|
|
| Santos,Tamara Leite dos; Belan,Leônidas Leoni; Zied,Diego Cunha; Dias,Eustáquio Souza; Alves,Eduardo. |
| ABSTRACT: Lecanicillium fungicola, which causes Dry bubble disease, induces infections and inflicts major losses in champignon production. The control can be managed through measures of hygiene and use of fungicides; however, in Brazil there are no registered products. This study aimed to estimate the influence of various essential oils extracted from Melissa officinalis, Thymus vulgaris, Origanum vulgare, Eucalyptus globulus, Cinnamomum zeylanicum and Syzygium aromaticum on the in vitro development and their uses. Therefore, analysis was performed of the L. fungicola isolates in vitro and the best oils were tested in vivo. Besides, the Agaricus bisporus - L. fungicola interaction was confirmed by scanning electron microscopy (SEM). Cinnamon and clove oils... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dry bubble disease; Lecanicillium fungicola; Essential oils; SEM; Alternative control. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500155 |
| |
|
|
| 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 |
| |
|
|
| Martini,Daiane; Barbosa,Giselle Feliciani; Matias,Rosemary; Marques Filho,Wolff Camargo; Garcia,Nayara Zielasko Trombini. |
| ABSTRACT: Apis melífera L. propolis is a resinous and balsamic material whose biological effects are related to its chemical composition. This chemical composition is greatly influenced by seasonality, so propolis from different seasons and regions has a different chemical composition. The increasing need for natural options to control fungi that cause damage to food crops makes propolis an alternative that deserves more research. In this context, the aim of this study was to evaluate the effect of seasonality on the antifungal potential of propolis collected in Campo Grande, Mato Grosso do Sul, Brazil, on the fungus Lasiodiplodia theobromae . Effects of different concentrations of ethanolic extracts of green propolis on the mycelial growth of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lasiodiplodia theobromae; Alternative control; Time of collection; Green propolis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300404 |
| |
|
|
| González Gómez, Rebeca. |
| Se estudió el efecto del extracto oleoso de neem (A. indica) en el control de V. destructor. La investigación estuvo encaminada a explorar los efectos que causa el neem tanto a V. destructor como a Apis mellifera, donde la colonia de abejas se observó como un superorganismo. En la primera parte de la investigación se corroboraron en laboratorio los efectos de toxicidad y repelencia del neem en el ácaro, observados en estudios previos; se observó que 2.64, 5.28, 10.56 y 21.12% de extracto de neem presentaron alta estabilidad en cuanto al efecto repelente; y 21.12% impidió que 98% de las varroas se posaran sobre pupas de abejas, lo que llevó a 100% de mortalidad de varroa en 72 h. La segunda etapa estuvo orientada a determinar los efectos del neem sobre... |
|
Palavras-chave: Azadirachta indica; Apis mellifera; Control alternativo; Abejas; Desarrollo; Alternative control; Honey bees; Development; Doctorado; Entomología y Acarología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/200 |
| |
|
|
| González Gómez, Rebeca. |
| Se estudió el efecto del extracto oleoso de neem (A. indica) en el control de V. destructor. La investigación estuvo encaminada a explorar los efectos que causa el neem tanto a V. destructor como a Apis mellifera, donde la colonia de abejas se observó como un superorganismo. En la primera parte de la investigación se corroboraron en laboratorio los efectos de toxicidad y repelencia del neem en el ácaro, observados en estudios previos; se observó que 2.64, 5.28, 10.56 y 21.12% de extracto de neem presentaron alta estabilidad en cuanto al efecto repelente; y 21.12% impidió que 98% de las varroas se posaran sobre pupas de abejas, lo que llevó a 100% de mortalidad de varroa en 72 h. La segunda etapa estuvo orientada a determinar los efectos del neem sobre... |
|
Palavras-chave: Azadirachta indica; Apis mellifera; Control alternativo; Abejas; Desarrollo; Alternative control; Honey bees; Development; Doctorado; Entomología y Acarología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/200 |
| |
| Registros recuperados: 42 | |
|
|
|
