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| Registros recuperados: 132 | |
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| ARENAS-CASTRO,Henry; MUNOZ-GOMEZ,Sergio A; CASTAÑO-CASTAÑO,Lorena; URIBE-ACOSTA,Melissa; LIZARAZO-MEDINA,Pilar Ximena. |
| Biological collections in natural history museums serve important purposes to the scientific community and the general public, however, their value and utility might be diminished by biodeterioration. We studied a biological collection that represents more than sixty years of avifauna sampling of Colombia, the country with the highest bird diversity. An initial inspection of the collection showed that the general appearance of some specimens was compromised by mold-like growth on their surfaces. We aimed at (i) identifying the taxonomic affiliation of these fungi, (ii) evaluating their cellulolytic activity, and (iii) probing chemical agents that could be utilized to control their growth. The most common fungi genera were Aspergillus, Penicillium,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird collection; Cellulolytic activity; Fungi; Fungicides; Museum. |
| Ano: 2016 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000100016 |
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| Orasmo, Gleice Ribeiro; Oliveira-Collet, Sandra Aparecida; Mangolin, Claudete Aparecida; Lapenta, Ana Silvia; Machado, Maria de Fátima Pires da Silva. |
| Current analysis characterizes the effect of different fungicides often applied for pest control on a-and b-esterase patterns of four economically important table-wine grape cultivars (Italia, Rubi, Benitaka and Brasil) of Vitis vinifera. The a- and b-esterase patterns in bud leaves of the cultivars were assessed by native PAGE analysis. Cabrio Top® compound inhibited Est-2, Est-5, Est-6, Est-7, Est-8, Est-9 and Est-10 carboxylesterases, whereas Est-4, Est-11, Est-12, Est-13, Est-14 acetylesterases and Est-16 carboxylesterase were detected as weakly stained bands. Carboxylesterases and acetylesterases were also detected as weakly stained bands when exposed to fungicides Orthocide 500®, Positron Duo® and Folicur PM®. No changes in a- and b-esterase patterns... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.02.00.00-5 esterases; Isozymes; Fungicides; Vine clones; Differential patterns. Genética. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/23400 |
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| Possiede,Y.M.; Gabardo,J.; Kava-Cordeiro,V.; Galli-Terasawa,L.V.; Azevedo,J.L.; Glienke,C.. |
| Citrus black spot (CBS) is a plant disease of worldwide occurrence, affecting crops in Africa, Oceania, and South America. In Brazil, climate provides favorable conditions and CBS has spread to the Southeast and South regions. CBS is caused by the fungus Guignardia citricarpa (anamorph: Phyllosticta citricarpa) and its control is based on the use of fungicides, such as benzimidazoles. In South Africa, the disease was kept under control for 10 years with benomyl, until cases of resistance to high concentrations of this fungicide were reported from all citrus-producing areas. Azoxystrobin (a strobilurin) has been found effective in controlling phytopathogens, including CBS, in a wide range of economically important crops. The present study investigated in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: G. citricarpa; Azoxystrobin; Benomyl; Citrus black spot; Fungicides. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200018 |
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| Jadon,Kuldeep Singh; Shah,Rakesh; Gour,Hari Narayan; Sharma,Pankaj. |
| Abstract Sweet or bell pepper is a member of the Solanaceae family and is regarded as one of the most popular and nutritious vegetable. Blight, in the form of leaf and fruit blight, has been observed to infect bell pepper crops cultivated at the horticulture farm in Rajasthan College of Agriculture, Udaipur, India. Based on disease severity, we attempted to curb this newly emerged problem using different fungicides, plant extracts, bio-control agents, and commercial botanicals against the fungus in laboratory and pot experiments. Bio-control agent Trichoderma viride and plant growth promoting Rhizobacteria (PGPR) isolate Neist-2 were found to be quite effective against bell pepper blight. All evaluated fungicides, botanicals, commercial botanicals, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant extracts; Bio-control agents; Trichoderma; PGPR; Botanicals; Neem oil; Zatropin; Fungicides. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000401020 |
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| Aguilar-Barragan,Alejandra; García-Torres,Ana Elisa; Odriozola-Casas,Olga; Macedo-Raygoza,Gloria; Ogura,Tetsuya; Manzo-Sánchez,Gilberto; James,Andrew C.; Islas-Flores,Ignacio; Beltrán-García,Miguel J.. |
| The chemical management of the black leaf streak disease in banana caused by Mycosphaerella fijiensis (Morelet) requires numerous applications of fungicides per year. However this has led to fungicide resistance in the field. The present study evaluated the activities of six fungicides against the mycelial growth by determination of EC50 values of strains collected from fields with different fungicide management programs: Rustic management (RM) without applications and Intensive management (IM) more than 25 fungicide application/year. Results showed a decreased sensitivity to all fungicides in isolates collected from IM. Means of EC50 values in mg L-1 for RM and IM were: 13.25 ± 18.24 and 51.58 ± 46.14 for azoxystrobin, 81.40 ± 56.50 and 1.8575 ± 2.11 for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Banana; Fungicides; Mycosphaerella fijiensis; Sensitivity; Sigatoka. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100051 |
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| Henríquez S,Jose Luis; Sarmiento V,Oliver; Alarcón C,Paula. |
| Apple scab (Venturia inaequalis) is the most important disease in Chilean apple (Malus domestica Borkh.) orchards where fungicide management is the main tool to control disease. Sensitivity tests to difenoconazole, fenarimol, mancozeb, and pyrimethanil fungicides were conducted on V. inaequalis wild isolates to construct local baseline sensitivity distributions, and compare them with a collection of isolates from seven different commercial orchards with no evidence of practical resistance. In vitro assays were conducted and sensitivity was measured as inhibition of mycelial growth (difenoconazole, fenarimol, pyrimethanil) or conidial germination (mancozeb). Departure from the baseline distribution to less sensitivity was found for difenoconazole,... |
| Tipo: Journal article |
Palavras-chave: Apple; Apple scab; Fungicides; DMI fungicides; Dithiocarbamates; Anilinopyrimidines. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100005 |
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| Laznik,Žiga; Vidrih,Matej; Trdan,Stanislav. |
| To increase our knowledge on the susceptibility of entomopathogenic nematodes (EPN) species to agrochemicals, the compatibility of the infective juveniles (IJ) of the entomopathogenic nematodes Steinernema feltiae, S. carpocapsae, and Heterorhabditis downesi with 15 chemical fungicides was investigated under laboratory conditions. The effect of direct IJ exposure to fungicides for 24 h was tested in a petri dish at 15, 20, and 25 °C. The results showed that the compatibility of S. feltiae with azoxystrobin was high, and similar findings were obtained for S. carpocapsae (strain C67) and all of the tested fungicides, except for tebuconazole + spiroxamine + triadimenol, maneb, dinocap, and copper (II) hydroxide + metalaxil-M. Nematode H. downesi (strain 3173)... |
| Tipo: Journal article |
Palavras-chave: Compatibility; Fungicides; Viability. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100010 |
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| Mantecón,Jorge D. |
| Soybean {Glycine max) is currently the most widely grown and rapidly expanding crop in Argentina, and brown spot caused by Septoria glycines is a major foliage disease that affects this crop. Triáis in the 2005 and 2006 growing seasons were undertaken using soybean (Glycine max) cv. Nidera A4800 RR. A randomized complete block design was used with four replicates. Two biological fungicides, based on Bacillus subtilis or B. pumilus, and four conventional fungicides, pyraclostrobin in combination with epoxiconazole (Opera 25 SC, BASF Argentina), azoxystrobin (Amistar 25 SC, Syngenta Argentina), trifloxystrobin in combination with cyproconazole (Sphere 267,5 EC, Bayer, Argentina), and tebuconazole (Folicur 25 EC, Bayer, Argentina), were evaluated. Fungicides... |
| Tipo: Journal article |
Palavras-chave: Bacillus; Chemical and biological control; Brown spot; Diseases; Fungicides; Soybean. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000200011 |
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| Latorre,Bernardo A; Elfar,Karina; Ferrada,Enrique E. |
| Gray mold (GM) caused by Botrytis cinerea is a major disease of grapes (Vitis vinifera) that substantially reduces the yield and quality of grape production in temperate and humid regions of the world. B. cinerea is a necrotrophic fungus that attacks the non-lignified aerial organs of grapes; in particular, berries are highly susceptible during ripening. The polycyclic nature and exponential progress exhibited by GM at the beginning of the its epidemic, as well as the abundant inoculum production, the high dissemination efficiency, the wide host range and the high genetic variability of B. cinerea, explain the difficulties encountered in attempting to control GM. At present, integrated disease management, including cultural and chemical control, is the... |
| Tipo: Journal article |
Palavras-chave: Botryotinia fuckeliana; Bunch rot; Epidemiology; Fungicides; Necrotroph; Vitis vinifera. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300001 |
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| Herrera,Rodrigo; Núñez,David; Romero,Natalia; Besoain,Ximena; Pérez,Luz María; Montealegre,Jaime. |
| The germination of conidia in wild-type (Th11, Th12 and Th650) and mutant (Th11A80.1, Th12A10.1 and Th650-NG7) strains of Trichoderma harzianum that were exposed to different commercial fungicides was studied. All wild-type and mutant Trichoderma strains were germinated in the presence of 1,700 mg L-1 of pencycuron. The wild-type strains Th12 and Th650 and the corresponding mutant strains Th12A10.1 and Th650-NG7 were sensitive to all concentrations of iprodione and metalaxil + mancozeb. The EC50 (Median Effective Concentration) values for the different fungicides were between 10-1 and 10-4 less than the concentrations recommended for field applications; one exception was Phyto-fos on Th650-NG7, where this ratio was 0.72. These results establish whether... |
| Tipo: Journal article |
Palavras-chave: Biocontrol; Biocontrol agents; Control of tomato root diseases; Fungicides; Fungicide tolerant Trichoderma; Integrated management. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300016 |
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| Decaro,Ricardo Augusto; Decaro Junior,Sergio Tadeu; Ferreira,Marcelo da Costa. |
| ABSTRACT: For a crop protection product to achieve its goal, the product must be applied and remain on the leaves until it is absorbed. This situation may be compromised due to rainfall after spraying, thus necessitating reapplication which increase the overall cost. Application technology research has focused on alternatives and solutions to mitigate this effect through the use of adjuvants. The objective of this research was to evaluate the deposit of spraying liquid on citrus seedlings using the products spirodiclofen, propargite, imidacloprid, lambda cyhalothrin, copper oxychloride, and copper hydroxide with water mixed with the adjuvants polydimethylsiloxane and phosphatidylcholine. Seedlings were subjected to simulated rains of 10mm at intervals of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungicides; Insecticides; Miticides; Pulverization; Application technology. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100013 |
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| Sánchez Aguirre, María Dolores. |
| En el cultivo de piña (Ananas comosus L. Merr.) desde el 2011 se ha estado presentando una enfermedad de frutos en postcosecha de etiología desconocida, en el estado de Veracruz, México. Fusarium subglutinans, Fusarium verticillioides (sin. Fusarium moni¬liforme) y Fusarium oxysporum, identificados cultural, morfológica y molecularmente, se asocio con este problema en 84% de los aislamientos obtenidos de pudrición de frutos. Se realizaron pruebas de patogenicidad en frutos de piña en estado de madurez 1 de la variedad MD2. Los frutos mostraron la pudrición, caracterizada inicialmente la presencia de pequeñas manchas irregulares de color café claro en el pericarpio de los frutos, conforme avanzo la enfermedad la mancha irregular se torno de color café... |
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Palavras-chave: Pudrición; F. subglutinans; F. verticillioides; F. oxysporum; Fungicidas; Rot; Fungicides; Fitopatología; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2039 |
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| Tovar Pedraza, Juan Manuel. |
| La muerte descendente de varetas injertadas de zapote mamey es el principal problema durante la propagación vegetativa de este frutal en viveros comerciales en Guerrero, México. Lasiodiplodia theobromae, identificado cultural, morfológica y molecularmente, se asoció con este problema en 97 % de los aislamientos obtenidos de varetas necrosadas. Se realizaron pruebas de patogenicidad en varetas injertadas de la selección “El Mexicano”. Las varetas mostraron muerte descendente, caracterizada por secamiento gradual con agrietamiento de la corteza del ápice a la base y crecimiento micelial externo y en la unión del injerto. Picnidios abundantes se observaron en peridermis y cicatrices foliares. El estudio de patogenicidad confirmó a L. theobromae como el... |
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Palavras-chave: Propagación; Vivero; Fungicidas; Lasiodiplodia theobromae; Pouteria sapota; Propagation; Nursery; Fungicides; Maestría; Fitopatología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/89 |
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| Pelayo Sánchez, Gabriela. |
| Se evaluó el efecto de seis concentraciones de conidios de Penicillium digitatum con el objetivo de determinar la concentración óptima que permita 100% de infección en frutos de limón persa en postcosecha. El hongo se aisló de frutos de limón mexicano del estado de Colima, Méx. Cada concentración (1 x 105, 3 x 105, 5 x 105, 7 x 105, 9 x 105, 1 x 106 esporas mL-1), se colocó en heridas de 2 mm profundidad x 1mm de ancho, aproximadamente, hechas en frutos en etapa de madurez de corte. Las concentraciones 1 x 105 y 3 x 105 esporas mL-1 mostraron una incidencia de 33 y 50 % de infección, respectivamente, mientras que los frutos inoculados con 5 x 105, 7 x 105, 9 x 105 y 1 x 106 esporas mL-1 presentaron 100% de incidencia de la enfermedad. Asimismo, se... |
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Palavras-chave: Esporas; Concentración; Infección; Control; Fungicidas; Eficiencia; Spores; Concentration; Infection; Fungicides; Efficiency; Fitopatología; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1684 |
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| Tovar Pedraza, Juan Manuel. |
| La muerte descendente de varetas injertadas de zapote mamey es el principal problema durante la propagación vegetativa de este frutal en viveros comerciales en Guerrero, México. Lasiodiplodia theobromae, identificado cultural, morfológica y molecularmente, se asoció con este problema en 97 % de los aislamientos obtenidos de varetas necrosadas. Se realizaron pruebas de patogenicidad en varetas injertadas de la selección “El Mexicano”. Las varetas mostraron muerte descendente, caracterizada por secamiento gradual con agrietamiento de la corteza del ápice a la base y crecimiento micelial externo y en la unión del injerto. Picnidios abundantes se observaron en peridermis y cicatrices foliares. El estudio de patogenicidad confirmó a L. theobromae como el... |
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Palavras-chave: Propagación; Vivero; Fungicidas; Lasiodiplodia theobromae; Pouteria sapota; Propagation; Nursery; Fungicides; Maestría; Fitopatología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/89 |
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| Galindo,Enrique; Serrano-Carreón,Leobardo; Gutiérrez,Carlos Roberto; Allende,Raúl; Balderas,Karina; Patiño,Martín; Trejo,Mario; Wong,Miguel Angel; Rayo,Emma; Isauro,Darío; Jurado,Carlos. |
| Background: Scientific literature contains many reports documenting the isolation and antagonist-testing of microorganisms with the potential for biological control in agriculture, however, very few have addressed all aspects involved in the long process that occurs before a potential strain, found and tested in laboratory, can reach commercialization. Results: After a multi-institutional and multi-disciplinary effort to develop a biological control agent with remarkable technical characteristics and performance, the fungicide Fungifree AB® was recently introduced in Mexican market. This product that has no chemical residues and is environmentally friendly which can be used by mango, avocado, papaya and citrus fruits (and other crops in the short term)... |
| Tipo: Journal article |
Palavras-chave: Biofungicides; Fungicides; Fungifree AB®; Process biotechnology. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000300005 |
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| Registros recuperados: 132 | |
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