530 results on '"Duarte, Henrique"'
Search Results
202. Sismotectónica do Algarve
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Dias, Ruben Pereira, Terrinha, Pedro, Carvalho, João, Cunha, Tiago A., Ressurreição, Ricardo, Gonçalves, João Noiva, Silva, S., Ramalho, Elsa, Pinto, Carlos C., Roque, Ana Cristina, Duarte, João C., Valadares, Vasco, Carrara, Gabriela, Duarte, Henrique, Batista, Luís Filipe, Rego, J., Gomes, F., Caneiras, F., Marquilhas, J., Catrapona, João, Matias, L., and Vicente, J.
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Algarve (Portugal) ,Sismotectónica - Published
- 2010
203. Photosynthetic Gas Exchange in Common Bean Submitted to Foliar Sprays of Potassium Silicate, Sodium Molybdate and Fungicide and Infected with Colletotrichum lindemuthianum
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Rodrigues, Fabrício A., primary, Polanco, Leonora R., additional, Duarte, Henrique Silva Silveira, additional, Resende, Renata Sousa, additional, and do Vale, Francisco Xavier Ribeiro, additional
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- 2014
- Full Text
- View/download PDF
204. Silicato de potássio, acibenzolar-S-metil e fungicidas no controle da ferrugem da soja
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Duarte, Henrique da Silva Silveira, Zambolim, Laércio, Rodrigues, Fabrício de Ávila, Rios, Jonas Alberto, and Lopes, Ueder Pedro
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disease control ,Phakopsora pachyrhizi ,nutrição mineral ,mineral nutrition ,Glycine max ,controle de doenças - Abstract
A produção da soja pode ser afetada pela ocorrência de várias doenças. Dentre estas, a ferrugem, causada pelo fungo Phakopsora pachyrhizi, tem se destacado. Atualmente, novas estratégias de controle para essa doença devem ser pesquisadas. Assim, este trabalho teve como objetivo avaliar a eficiência do silicato de potássio (KSi), acibenzolar-S-metil e fungicidas no controle da ferrugem da soja. Um experimento foi conduzido em condições de campo, em delineamento em blocos ao acaso, utilizando-se 10 tratamentos, com três repetições. Foi utilizada a cultivar 'Monarca' por ser suscetível à ferrugem. Os tratamentos utilizados foram: T1 - testemunha (pulverização com água); T2 - KSi (1,2kg ha-1); T3 - KSi (2,4kg ha-1); T4 - KSi (3,6kg ha-1); T5 - KSi (4,8kg ha-1); T6 - tebuconazole (125g de i.a. ha-1); T7 - cloreto de potássio (61,72g L-1); T8 - mancozebe (2400g de i.a. ha-1); T9 - mancozebe (2400g de i.a. ha-1) + KSi (1,2kg ha-1) e T10 - acibenzolar-S-metil (125g de i.a. ha-1). As plantas da bordadura foram inoculadas com uma suspensão de 5x10(5) uredosporos mL-1 no estádio V4 para constituírem fonte de inóculo, para as parcelas centrais. As plantas foram pulverizadas com os produtos que constituíram os tratamentos T2, T3, T4, T5, T7, T8 e T9 nos estádios V5, R1, R4 e R5.4 e os tratamentos T6 e T10 nos estádios R1, R4 e R5.4. As plantas foram pulverizadas com atomizador costal manual de bico cônico empregando-se um volume de calda de 200L ha-1. Foram realizadas cinco avaliações da severidade da ferrugem nos terços inferior, médio e superior das plantas utilizando-se uma escala diagramática variando de 0,6 a 78,5%, e os dados obtidos foram utilizados para calcular a área abaixo da curva do progresso da ferrugem (AACPF). Não houve efeito significativo das doses de KSi na AACPF e severidade máxima (Ymax) nos terços inferior, médio e superior das plantas, além da produtividade. Os tratamentos 8, 9 e 10 apresentaram eficiência intermediária no controle da ferrugem. O tratamento 6 foi o mais eficiente no controle da doença por resultar nos menores valores da AACPF e Ymax para os terços inferior, médio e superior, além de uma produtividade significativamente maior em relação aos demais tratamentos. Soybean production can be affected by the occurrence of several diseases. Among them, the rust, caused by the fungus Phakopsora pachyrhizi, has been outstanding. Nowadays, new strategies to control soybean rust need to be searched. Therefore, this study aimed to evaluate the efficiency of potassium silicate (KSi), acibenzolar-S-methyl and some fungicides on the control of soybean rust. An experiment was carried out under field conditions in a randomized complete block design with 10 treatments and three replications. The cultivar 'Monarca' was used because it is susceptible to rust. The treatments used were: T1 - control (plants sprayed with water); T2 - KSi (1.2kg ha-1); T3 - KSi (2.4kg ha-1); T4 - KSi (3.6kg ha-1); T5 - KSi (4.8kg ha-1); T6 - tebuconazol (125g de a.i. ha-1); T7 - potassium cloride (61.72g L-1); T8 - mancozeb (2400g de a.i. ha-1); T9 - mancozeb (2400g de a.i. ha-1) + KSi (1.2kg ha-1) and T10 - acibenzolar-S-methyl (125g de a.i. ha-1). Plants from the two lateral lines were inoculated with a suspension of 5x10(5) uredospores/mL at the V4 growth stage to produce inoculum to infect plants at the two central lines. Plants were sprayed with the products that constituted the treatments T2, T3, T4, T5, T7, T8, and T9 at V5, R1, R4, and R5.4 growth stages; and the treatments T6 and T10 at R1, R4, and R5.4 growth stages. Plants were sprayed using a costal sprayer in a volume of 200L ha-1. A total of five disease severity evaluations at the low, medium and high part of the plant canopy were done using a diagrammatic scale ranging from 0.6 to 78.5%. Data were used to calculate the area under rust progress curve (AURPC). There was no effect of the KSi rates on AURPC and final disease severity (Ymax) at the low, medium and high part of the plant canopy. Yield was also unaffected. The treatments 8, 9, and 10 had an intermediary efficiency on rust control. The treatment 6 was the most efficient on rust control giving the lowest values for AURPC and Ymax for the low, medium and high part of the plant canopy. High values for yield were also obtained using this treatment as compared to the others.
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- 2009
205. Resistance of potato cultivars to late blight
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Duarte, Henrique da Silva Silveira, Mizubuti, Eduardo Seiti Gomide, Ribeiro Junior, José Ivo, Zambolim, Laércio, Rodrigues, Fabrício de ávila, and Pádua, Joaquim Gonçalves de
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CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA [CNPQ] ,Requeima ,Phytophthora infestans ,Fungos fitopatogênicos ,Batata ,Resistance ,Late blight ,Resistência ,Plant pathogenic fungi ,Potatoes ,Solanum tuberosum - Abstract
Conselho Nacional de Desenvolvimento Científico e Tecnológico Potato (Solanum tuberosum L.) is cultivated in more than 100 countries and it is the fourth most cultivated crop in the world. But some diseases can be limitaing to potato growth. The late blight of potato, caused by oomycete Phytophthora infestans (Mont.) de Bary is one of the most important diseases worldwide. Potato resistance to late blight is the most important control measure, although little emphasis has been done for disease resistance. Due to this reason, the objective of this work was to study the level of resistance of potato cultivars to late blight. Trials were conducted in Maria da Fé, in the southern area of the state of Minas Gerais, from march 22 to July 8 of 2008. The experiment design followed a complete block design with 34 treatments (represented by each cultivar) with three replications. The plants were inoculated naturally. Yield (PROD) was evaluated weigthing all the potato tubers of all the plants in each replication. Late blight severity was evaluated in every two days starting when the first symptoms were visible using a descriptive scale. The following epidemiological variables were obtained: late blight severity when the epidemics reached 50 % of the cycle of the cultivar (Y50 CULT); relative area under disease progress curves for each cultivar (RAUDPC CULT); time in days of the first symptoms of the disease in each cultivar, until the severity reaches 100% of disease severity (T100 CULT); time in days of the fist symptoms of the disease in each cultivar until 50% of disease severity (T50 CULT); late blight severity when it reaches half the epidemic for the experiment (Y50 EXP); relative area under disease progress curves for the experiment (RAUDPC EXP); time in days for the first symptoms in the experiment until 100% of disease severity (T100 EXP); time in days for the first symptoms in the experiment until 50% of disease severity (T50 EXP); time in days for the first symptoms in the experiment until 0.5 % of disease severity (T0.5 EXP); rate of disease progress (r) and maximum disease severity (Ymax). The cultivars were grouped in four pre- determined levels of disease resistance to late blight, defined by the Euclidian distance as a measure of dissimilarity and complete linkage as hierarchical clustering. The clone IAC 6090 (Ibituaçu) was classified as Resistant (R). The cultivars Aracy, Aracy Ruiva, Colorado and IAPAR Cristina were classified as Moderately Resistant (MR); Baraka, Baronesa, BRS Ana, BRS Elisa, Caesar, Catucha, Emeraude, Florice, Itararé, Markies, Melody, Naturella, Soléia and Voyager were classified as Moderatly Susceptible (MS); Ágata, Almera, Asterix, Atlantic, Canelle, Chipie, Cupido, Éden, Elodie, Eole, Fontane, Gourmandine, Gredine, Monalisa and Opaline were classified as Susceptible (S) to late blight. The cultivars classified as resistant and moderately resistant are of long cycles whereas those classified as moderated susceptible and susceptible are in the majority of short cycle. In the great majority of the cases the more resistant cultivars to late blight have rough skin whereas those more susceptible have smooth skin. The level of late blight resistance and the duration of the cycle of the cultivar influenced the potato yield. The average yield of the R, MR, MS and S cultivars were 37.8, 17.6, 15.3 and 7.2 t/ha, respectively. The Y50 CULT average of the R, MR, MS and S cultivars were 11.0, 7.3, 9.8 and 16.3%, respectively. The RAUDPC CULT average of the cultivars R, MR, MS and S cultivars were 25.0, 27.9, 29.4 and 33.3, respectively. The T100 CULT average of the cultivars R, MR, MS and S cultivars were 72.3, 44.8, 34.0 and 29.3 days, respectively. The T50 CULT average of the cultivars R, MR, MS and S cultivars were 57.6, 33.2, 24.5 and 19.9 days, respectively. The Y50 EXP average of the cultivars R, MR, MS and S cultivars were 8.3, 42.1, 96.5 and 99.8%, respectively. The AACPDR EXP average of the cultivars R, MR, MS and S were 24.3, 47.1, 59.9 and 69.0, respectively. The T100 EXP average of the cultivars R, MR, MS and S cultivars were 76.3, 53.1, 40.9 and 33.6 days, respectively. The T50 EXP average of the cultivars R, MR, MS and S cultivars were 61.6, 41.5, 31.3 and 24.1 days respectively. The T0,5 EXP average of the cultivars R, MR, MS and S cultivars were 22.3, 25.2, 17.8 and 14.2 days, respectively. The average r for the cultivars R, MR, MS and S cultivars were 0.12, 0.26, 0.37 and 0.46, respectively. The average Ymax of the cultivars R, MR, MS and S were 100; 100; 100 e 100%, respectively. A batateira (Solanum tuberosum L.) é cultivada em centenas de países e a batata é o quarto alimento mais consumido no mundo. A produção de batata é limitada por vários fatores, dentre estes, as doenças têm ocupado lugar de destaque. Dentre as doenças que infectam a batata, não só no Brasil, mas em todo o mundo, a requeima causada pelo oomiceto Phytophthora infestans (Mont.) de Bary é considerada uma das mais destrutivas e de maior importância. O uso de cultivares de batata resistentes à requeima é o modo mais econômico de controle da doença. Entretanto, o nível de resistência à requeima das principais cultivares plantadas no Brasil ainda não é conhecido. Este trabalho teve como objetivo determinar o nível de resistência destas cultivares. Foi conduzido um experimento no município de Maria da Fé - MG, localizado no Sul de Minas Gerais, no período de 22 de março a 8 de julho de 2008. O delineamento utilizado foi o de blocos casualizados com 34 tratamentos (cada tratamento foi representado por uma cultivar) com três repetições. A inoculação das plantas do experimento foi feita naturalmente. A produtividade (PROD) foi avaliada pesando-se os tubérculos de todas as plantas de cada parcela. Foi quantificada a severidade da requeima a cada dois dias a partir do surgimento dos primeiros sintomas da doença, utilizando uma escala descritiva. A partir dos dados de severidade foram obtidas as seguintes variáveis epidemiológicas: severidade na metade da epidemia para a cultivar (Y50 CULT); área abaixo da curva de progresso da doença relativa para a cultivar (AACPDR CULT); tempo em dias do primeiro sintoma na cultivar até 100% de severidade (T100 CULT); tempo em dias do primeiro sintoma na cultivar até 50% de severidade (T50 CULT); severidade na metade da epidemia para o experimento (Y50 EXP); área abaixo da curva de progresso da doença relativa para o experimento (AACPDR EXP); tempo em dias do primeiro sintoma no experimento até 100% de severidade (T100 EXP); tempo em dias do primeiro sintoma no experimento até 50% de severidade (T50 EXP), tempo em dias do primeiro sintoma no experimento até 0,5% de severidade (T0,5 EXP); taxa de progresso da doença (r) e severidade máxima (Ymax). Para o agrupamento das cultivares em quatro níveis de resistência à requeima pré- definidos, foi utilizada a distância Euclidiana padronizada como medida de dissimilaridade e a ligação completa como técnica hierárquica aglomerativa. O clone IAC 6090 (Ibituaçu) foi classificado como Resistente (R). As cultivares Aracy, Aracy Ruiva, Colorado e IAPAR Cristina foram classificadas como Moderadamente Resistentes (MR). As cultivares Baraka, Baronesa, BRS Ana, BRS Elisa, Caesar, Catucha, Emeraude, Florice, Itararé, Markies, Melody, Naturella, Soléia e Voyager foram classificadas como Moderadamente Suscetíveis (MS). As cultivares Ágata, Almera, Asterix, Atlantic, Canelle, Chipie, Cupido, Éden, Elodie, Eole, Fontane, Gourmandine, Gredine, Monalisa e Opaline foram classificadas como Suscetíveis (S) à requeima. As cultivares classificadas como resistente e moderadamente resistentes são de ciclo mais tardio, enquanto que a maioria das cultivares classificadas como moderadamente suscetíveis e suscetíveis são mais precoces. Na maioria dos casos, as cultivares mais resistentes à requeima possuem pele mais áspera, enquanto que as mais suscetíveis possuem pele lisa. O nível de resistência à requeima e a duração do ciclo da batata influenciaram a produtividade. A PROD média das cultivares R, MR, MS e S foi de 37,8; 17,6; 15,3 e 7,2 t.ha-1, respectivamente. A Y50 CULT média das cultivares R, MR, MS e S foi de 11,0; 7,3; 9,8 e 16,3%, respectivamente. A AACPDR CULT média das cultivares R, MR, MS e S foi de 25,0; 27,9; 29,4 e 33,3, respectivamente. O T100 CULT médio das cultivares R, MR, MS e S foi de 72,3; 44,8; 34,0 e 29,3 dias, respectivamente. O T50 CULT médio das cultivares R, MR, MS e S foi de 57,6; 33,2; 24,5 e 19,9 dias, respectivamente. A Y50 EXP média das cultivares R, MR, MS e S foi de 8,3; 42,1; 96,5 e 99,8%, respectivamente. A AACPDR EXP média das cultivares R, MR, MS e S foi de 24,3; 47,1; 59,9 e 69,0, respectivamente. O T100 EXP médio das cultivares R, MR, MS e S foi de 76,3; 53,1; 40,9 e 33,6 dias, respectivamente. O T50 EXP médio das cultivares R, MR, MS e S foi de 61,6; 41,5; 31,3 e 24,1 dias, respectivamente. O T0,5 EXP médio das cultivares R, MR, MS e S foi de 22,3; 25,2; 17,8 e 14,2 dias, respectivamente. A r média das cultivares R, MR, MS e S foi de 0,12; 0,26; 0,37 e 0,46, respectivamente. A Ymax média das cultivares R, MR, MS e S foi de 100; 100; 100 e 100%, respectivamente.
- Published
- 2009
206. Strain partitioning and westwards migration of deformation in NW Gulf of Cadiz (Africa-Iberia plate boundary)
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Rosas, Filipe M., Duarte, João C., Terrinha, Pedro, Vicente, J., Matias, Luís, Valadares, Vasco, Duarte, Henrique, and Roque, Ana Cristina
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Deformação ,Golfo de Cádiz (Espanha) ,Espanha ,Tectónica - Abstract
European Geosciences Union General Assembly 2007 (EGU 2007), Vienna, Austria, 15-20 April 2007
- Published
- 2007
207. Recursos em areias e cascalhos ao largo da ilha de S. Miguel, Açores
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Quartau, Rui, Teixeira, F. Curado, Duarte, Henrique, Pinto, Carlos C., and Monteiro, José Hipólito
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Cascalho ,Inertes ,Areias ,Plataforma insular ,Ilha de São Miguel (Arquipélago dos Açores, Portugal) - Abstract
A campanha de geofísica SAMI-1 realizada ao largo da Ilha de S. Miguel (Açores) permitiu a aquisição de perfis sísmicos de alta resolução (Boomer) e de batimetria detalhada. Estes dados possibilitaram a definição das áreas mais promissoras em inertes (areias e cascalhos) na plataforma insular de S. Miguel. Deverão ser efectuados estudos de pormenor de forma a caracterizar estas áreas, para servirem de apoio à elaboração de um plano de gestão da extracção de inertes em redor das ilhas.
- Published
- 2006
208. Um método para medições de fluxo de calor latente a partir de sensores de umidade capacitivos
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Duarte, Henrique Ferro, Dias, Nelson Luis da Costa, and Universidade Federal do Paraná. Setor de Tecnologia.Setor de Ciencias Exatas.Programa de Pós-Graduaçao em Métodos Numéricos em Engenharia.
- Abstract
Orientador: Nelson Luís Dias Inclui apêndice Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Exatas e Setor de Tecnologia, Programa de Pós-Graduaçao em Métodos Numéricos em Engenharia. Defesa: Curitiba, 2006 Inclui bibliografia
- Published
- 2006
209. Tectonic evolution of an intraplate basin: the Lower Tagus Cenozoic Basin, Portugal.
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Carvalho, João, Pinto, Carlos, Dias, Ruben, Rabeh, Taha, Torres, Luis, Borges, José, Torres, Ricardo, and Duarte, Henrique
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MORPHOTECTONICS ,GEOLOGICAL basins ,SEDIMENTS ,GRAVIMETRIC analysis ,SEISMIC reflection method - Abstract
This article focuses on the reinterpretation of well, seismic reflection, magnetic, gravimetric, surface wave and geological surface data, together with the acquisition of seismic noise data to study the Lower Tagus Cenozoic Basin tectono-sedimentary evolution. For the first time, the structure of the base of the basin in its distal and intermediate sectors is unravelled, which was previously only known in the areas covered by seismic reflection data (distal and small part of intermediate sectors). A complex geometry was found, with three subbasins delimited by NNE- SSW faults and separated by WNW- ESE to NW- SE oriented horsts. In the area covered by seismic reflection data, four horizons were studied: top of the Upper Miocene, Lower to Middle Miocene top, the top of the Palaeogene and the base of Cenozoic. Seismic data show that the major filling of the basin occurred during Upper Miocene. The fault pattern affecting Neogene and Palaeogene units derived here points to that of a polyphasic basin. In the Palaeogene, the Vila Franca de Xira ( VFX) and a NNE- SSW trending previously unknown structure ( ABC fault zone) probably acted as the major strike-slip fault zones of the releasing bend of a pull-apart basin, which produced a WNW- ESE to NW- SE fault system with transtensional kinematic. During the Neogene, as the stress regime rotated anticlockwise to the present NW- SE to WNW- ESE orientation, the VFX and Azambuja fault zones acted as the major transpressive fault zones and Mesozoic rocks overthrusted Miocene sediments. The reactivation of WNW- ESE to NW- SE fault systems with a dextral strike-slip component generated a series of horsts and grabens and the partitioning of the basin into several subbasins. Therefore, we propose a polyphasic model for the area, with the formation of an early pull-apart basin during the Palaeogene caused by an Iberia-Eurasia plates collision that later evolved into an incipient foreland basin along the Neogene due to a NW- SE to WNE- ESE oriented Iberia-Nubia convergence. This convergence is producing uplift in the area since the Quaternary except for the Tagus estuary subbasin around the VFX fault, where subsidence is observed. This may be due to the locking or the development of a larger component of strike-slip movement of the NNE- SSW to N-S thrust fault system with the exception of the VFX fault, which is more favourably oriented to the maximum compressive stress. [ABSTRACT FROM AUTHOR]
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- 2017
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210. High resolution seismic stratigraphy of the Ria de Aveiro (Portugal)
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Duarte, Henrique, Pinheiro, Luís M., Bernardes, Cristina, Teixeira, F. C., Bouriak, Serguei, and Monteiro, José Hipólito
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Dados sísmicos ,Estratigrafia regional ,Ria de Aveiro (Portugal) ,Sismologia - Published
- 2005
211. Field resistance of potato cultivars to foliar early blight and its relationship with foliage maturity and tuber skin types
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Duarte, Henrique S. S., primary, Zambolim, Laércio, additional, Rodrigues, Fabrício A., additional, Paul, Pierce A., additional, Pádua, Joaquim G., additional, Ribeiro Júnior, José I., additional, N. Júnior, Antonio F., additional, and Rosado, André W. C., additional
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- 2014
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212. The burden of alcoholism in fifteen years of cirrhosis hospital admissions in Portugal
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Marinho, Rui T., primary, Duarte, Henrique, additional, Gíria, José, additional, Nunes, Joana, additional, Ferreira, Alexandre, additional, and Velosa, José, additional
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- 2014
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213. Rice Resistance to Sheath Blight Mediated by Potassium
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Schurt, Daniel Augusto, primary, Lopes, Ueder Pedro, additional, Duarte, Henrique Silva Silveira, additional, and Rodrigues, Fabrício Ávila, additional
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- 2014
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214. Effect of Magnesium on the Development of Sheath blight in Rice
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Schurt, Daniel A., primary, Lopes, Ueder P., additional, Duarte, Henrique S. S., additional, and Rodrigues, Fabrício Á., additional
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- 2014
- Full Text
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215. Socio-Ideological Organizational Controls Scale
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Costa, Tiago, primary, Duarte, Henrique, additional, and Palermo, Ofelia A., additional
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- 2014
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216. Increased water-use efficiency and reduced CO2uptake by plants during droughts at a continental scale
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Peters, Wouter, van der Velde, Ivar R., van Schaik, Erik, Miller, John B., Ciais, Philippe, Duarte, Henrique F., van der Laan-Luijkx, Ingrid T., van der Molen, Michiel K., Scholze, Marko, Schaefer, Kevin, Vidale, Pier Luigi, Verhoef, Anne, Wårlind, David, Zhu, Dan, Tans, Pieter P., Vaughn, Bruce, and White, James W. C.
- Abstract
Severe droughts in the Northern Hemisphere cause a widespread decline of agricultural yield, the reduction of forest carbon uptake, and increased CO2growth rates in the atmosphere. Plants respond to droughts by partially closing their stomata to limit their evaporative water loss, at the expense of carbon uptake by photosynthesis. This trade-off maximizes their water-use efficiency (WUE), as measured for many individual plants under laboratory conditions and field experiments. Here we analyse the 13C/12C stable isotope ratio in atmospheric CO2to provide new observational evidence of the impact of droughts on the WUE across areas of millions of square kilometres and spanning one decade of recent climate variability. We find strong and spatially coherent increases in WUE along with widespread reductions of net carbon uptake over the Northern Hemisphere during severe droughts that affected Europe, Russia and the United States in 2001–2011. The impact of those droughts on WUE and carbon uptake by vegetation is substantially larger than simulated by the land-surface schemes of six state-of-the-art climate models. This suggests that drought-induced carbon–climate feedbacks may be too small in these models and improvements to their vegetation dynamics using stable isotope observations can help to improve their drought response.
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- 2018
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217. The widely scalable Mobile Underwater Sonar Technology (WiMUST) project: An overview.
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Al-Khatib, Habib, Antonelli, Gianluca, Caffaz, Andrea, Caiti, Andrea, Casalino, Giuseppe, de Jong, Ivan Bielic, Duarte, Henrique, Indiveri, Giovanni, Jesus, Sergio, Kebkal, Konstantin, Pascoal, Antonio, and Polani, Daniel
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- 2015
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218. Efeito da aplicação foliar de silicato de potássio e de fungicida na severidade da ferrugem da folha e da mancha amarela do trigo
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Wordell Filho, João Américo, primary, Duarte, Henrique da Silva Silveira, additional, and Rodrigues, Fabrício de Ávila, additional
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- 2013
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219. Elaboração e validação de escalas diagramáticas para avaliação da severidade da mancha-bacteriana do feijão - caupi em cultivares com trifólios morfologicamente distintos
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Lima, Hyanameyka Evangelista de, primary, Nechet, Kátia de Lima, additional, Vieira, Bernardo de Almeida Halfeld, additional, Oliveira, José Rogério de, additional, Duarte, Henrique da Silva Silveira, additional, Queiroz, Ezequiel de Souza, additional, and Oliveira, Francidalva de Lima, additional
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- 2013
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220. Silicon and Triadimenol for the Management of Coffee Leaf Rust
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Lopes, Ueder P., primary, Zambolim, Laércio, additional, Souza Neto, Pedro N., additional, Duarte, Henrique S. S., additional, Ribeiro, José Ivo, additional, Souza, Antônio F., additional, and Rodrigues, Fabricio Á., additional
- Published
- 2013
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221. Effect of Zinc on the Development of Brown Spot in Rice
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Moreira, Wiler R., primary, Rodrigues, Fabrício Avila, additional, and Duarte, Henrique Silva Silveira, additional
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- 2013
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222. Evaluating the Community Land Model (CLM 4.5) at a Coniferous Forest Site in Northwestern United States Using Flux and Carbon-Isotope Measurements.
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Duarte, Henrique F., Raczka, Brett M., Ricciuto, Daniel M., Lin, John C., Koven, Charles D., Thornton, Peter E., Bowling, David R., Chun-Ta Lai, Bible, Kenneth J., and Ehleringer, James R.
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CONIFEROUS forests ,CLIMATE change ,CARBON isotopes ,METEOROLOGY - Abstract
Summer droughts in the western United States are expected to intensify with climate change. Thus, an adequate representation of ecosystem drought response in land models is critical for predicting carbon dynamics. The goal of this study was to assess the performance of the Community Land Model, Version 4.5 (CLM) for an old-growth coniferous forest in the Pacific Northwest region of the United States (Wind River AmeriFlux site), characterized by a climate that has heavy winter precipitation followed by summer drought. Particular attention was given to the model skill in the simulation of stomatal conductance and its response to drought stress. CLM was driven by site-observed meteorology and calibrated primarily using parameter values observed at the site or at similar stands in the region. Key model adjustments included parameters controlling specific leaf area and stomatal conductance. Default values of these parameters led to significant underestimation of gross primary production, overestimation of evapotranspiration, and consequently overestimation of photosynthetic
13 C discrimination, reflected on reduced13 C:12 C ratios of carbon fluxes and pools. Adjustments in soil hydraulic parameters within CLM were also critical, preventing significant underestimation of soil water content and unrealistic drought stress during summer. After calibration, CLM was able to simulate energy and carbon fluxes, leaf area index, biomass stocks, and carbon isotope ratios of carbon fluxes and pools in reasonable agreement with site observations. Overall, the calibrated CLM was able to simulate the observed response of canopy conductance to atmospheric vapor pressure deficit and soil water content, reasonably capturing the impact of drought stress on ecosystem functioning. The calibrated parameters may be of use for future modeling studies involving stands of similar age and composition under a similar climate regime. More broadly, the calibration of the Ball-Berry stomatal conductance model in CLM aligned with observations reported in the literature for coniferous trees, suggesting that a future release of CLM would benefit from using a distinct, lower slope value (mbb =6) for conifers, rather than a unique value for all C3 plants (mbb =9). Thanks to the recent implementation of photosynthetic 13C discrimination within CLM, the results of this study indicate that carbon isotope measurements can be used to constrain stomatal conductance and water use efficiency in CLM as an alternative to flux observations. They also have the potential to guide structural improvements in the model in respect to the representation of carbon storage pools. [ABSTRACT FROM AUTHOR]- Published
- 2016
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223. ANÁLISE DO SETOR PORTUÁRIO BRASILEIRO
- Author
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DE OLIVEIRA DUARTE, HENRIQUE, primary
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224. Silicato de potássio, acibenzolar-S-metil e fungicidas no controle da ferrugem da soja
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Duarte, Henrique da Silva Silveira, primary, Zambolim, Laércio, additional, Rodrigues, Fabrício de Ávila, additional, Rios, Jonas Alberto, additional, and Lopes, Ueder Pedro, additional
- Published
- 2009
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225. Efeito do silicato de potássio isoladamente ou em mistura com fungicida no controle da requeima da batateira
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Duarte, Henrique da Silva Silveira, primary, Zambolim, Laércio, additional, Rodrigues, Fabrício Ávila, additional, and Rios, Jonas Alberto, additional
- Published
- 2008
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226. Manejo da requeima do tomateiro industrial empregando sistema de previsão
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Duarte, Henrique da Silva Silveira, primary, Zambolim, Laércio, additional, and Jesus Junior, Waldir Cintra de, additional
- Published
- 2007
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227. Controle da requeima em tomateiro industrial com fungicidas e silicato de potássio
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Duarte, Henrique S.S., primary, Zambolim, Laércio, additional, and Rodrigues, Fabrício Á., additional
- Published
- 2007
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228. High-resolution seismic imaging of gas accumulations and seepage in the sediments of the Ria de Aveiro barrier lagoon (Portugal)
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Duarte, Henrique, primary, Menezes Pinheiro, Luis, additional, Curado Teixeira, Francisco, additional, and Monteiro, José Hipólito, additional
- Published
- 2007
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229. An attenuated eddy covariance method for latent heat flux measurements
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Dias, Nelson L., primary, Duarte, Henrique F., additional, Maggiotto, Selma R., additional, and Grodzki, Leocádio, additional
- Published
- 2007
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230. Impact of Nocturnal Low-Level Jets on Near-Surface Turbulence Kinetic Energy.
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Duarte, Henrique, Leclerc, Monique, Zhang, Gengsheng, Durden, David, Kurzeja, Robert, Parker, Matthew, and Werth, David
- Subjects
- *
JETS (Fluid dynamics) , *NEAR-surface geophysics , *TURBULENCE , *KINETIC energy , *MONIN-Obukhov length , *ATMOSPHERIC boundary layer - Abstract
We report on the role of low-level jets (LLJs) on the modulation of near-surface turbulence in the stable boundary layer, focusing on the behaviour of the transport terms of the turbulence kinetic energy (TKE) budget. We also examine the applicability of Monin-Obukhov similarity theory (MOST) in light of these terms. Using coincident near-surface turbulence and LLJ data collected over a three-month period in South Carolina, USA, we found that turbulence during LLJ periods was typically stronger and more well-developed in comparison with periods without a LLJ. We found a local imbalance in the near-surface TKE budget, in which the imbalance (residual) term was typically positive (i.e., energy gain) and nearly in equilibrium with buoyant consumption. Based on a comparison with previous studies, we assume that this residual term represents mostly pressure transport. We found the behaviour of the residual term to be better delineated in the presence of LLJs. We found shear production to adhere to MOST remarkably well during LLJs, except under very stable conditions. Gain of non-local TKE via pressure transport, likely consisting of large-scale fluctuations, could be the cause of the observed deviation from the MOST $$z$$ -less prediction. The fact that this deviation was observed for periods with well-developed turbulence with an inertial subrange slope close to $$-5/3$$ indicates that such Kolmogorov turbulence is not a sufficient condition to guarantee the applicability of the MOST $$z$$ -less concept, as recently suggested in the literature. The implications of these results are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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231. DMI and QoI fungicides for the control of coffee leaf rust.
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Honorato, Jaime, Zambolim, Laércio, Nascimento Lopes, Uilton, Lopes, Ueder, and Silva Silveira Duarte, Henrique
- Abstract
This study investigated the ability of different triazole and strobilurin fungicides either alone or combination when applied to the leaves and triazole to the soil for control of Coffee Leaf Rust (CLR). The experiments were performed in a greenhouse using three month-old coffee seedlings, and in the field with five years old plants using the susceptible variety 'Catuai vermelho', at elevation of 750 m, from 2010 to 2012, in Viçosa, Minas Gerais State, Brazil. The effects of triazole (triadimenol, cyproconazole and epoxiconazole) and strobilurin (azoxystrobin, trifloxystrobin, pyraclostrobin) was first studied in a greenhouse to evaluate the translaminar effect on CLR control. Based on the results obtained in the greenhouse, a field experiment was performed to evaluate the effect of triazole applied to the soil and triazole + strobilurin sprayed on CLR control and the effect on coffee berry yield of the plants. The different fungicides applied in the greenhouse reduced CLR severity by 8.9 % (trifloxystrobin), 79.4 % (azoxystrobin), 82.0 % (triadimenol), 93.2 % (cyproconazole), 96.6 % (epoxiconazole) and 98.5 % (pyraclostrobin) compared to that in the control plants. In the field experiment triazole + strobilurin fungicides provided effective CLR control. The co-application of epoxiconazole and pyraclostrobin or azoxystrobin sprayed twice resulted in the most effective CLR control and maintained the highest coffee berry yield. The incidence of CLR was 83.5, 54.0 and 78.5 % for the control treatments, whereas the incidence did not exceeded 24.4, 37.0 and 39.0 % on the sprayed plants. The average coffee berry yield increased by 33.9 % (lowest value) when applying triadimenol to the soil in November followed by cyproconazole + trifloxystrobin sprayed in December and February, and increased by 99.1 % (highest value) in the treatment with epoxiconazol + pyraclostrobin sprayed in December and March compared with plants that did not receive any fungicide application. The control treatment and that of triadimenol applied to the soil in November followed by cyproconazole + trifloxystrobin sprayed in December and February yielded less than 1800 (1320 to 1800) kg/ha of processed coffee, whereas the other treatments more than 2100 (2142 to 2676) kg/ha. Treatments with cyproconazole applied to the soil in November followed by cyproconazole + azoxystrobin sprayed on the leaves in December and February, epoxiconazol + pyraclostrobin sprayed on the leaves in December and March, and cyproconazole + azoxystrobin sprayed on leaves in December, February and April yielded more than 2340 (2340 to 2676) kg/ha of processed coffee. This is the first report indicating that a triazole fungicide applied to the soil and triazole + strobilurin fungicide sprayed on the leaves, efficiently controlled CLR and significantly increased coffee berry yield for three seasons. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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232. Photosynthetic Gas Exchange in Common Bean Submitted to Foliar Sprays of Potassium Silicate, Sodium Molybdate and Fungicide and Infected with Colletotrichum lindemuthianum.
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Rodrigues, Fabrício A., Polanco, Leonora R., Duarte, Henrique Silva Silveira, Resende, Renata Sousa, and Vale, Francisco Xavier Ribeiro
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GAS exchange in plants ,PHOTOSYNTHESIS ,POTASSIUM silicate ,SODIUM molybdate ,FUNGICIDES ,COLLETOTRICHUM lindemuthianum - Abstract
This study investigated whether foliar sprays of potassium silicate (KSi), sodium molybdate (NaMo) or a combination of both (KSi + NaMo), with or without the fungicide azoxystrobin (Azox), could reduce anthracnose symptoms, improve photosynthesis and increase yield. Two 2 × 4 factorial experiments, consisting of untreated or fungicide-treated plants sprayed with KSi, NaMo or KSi + NaMo were arranged in a randomized block design with three replications. The treatments were as follows: (i) KSi; (ii) NaMo; (iii) KSi + NaMo; (iv) Azox; (v) Azox + KSi; (vi) Azox + NaMo; (vii) Azox + KSi + NaMo; and (viii) control (no KSi, NaMo or Azox). The KSi, NaMo and Azox treatments were applied at the rates of 35 g/l, 90 g/ha and 120 g ai/ha, respectively. KSi was applied at 20, 27, 40 and 55 days after sowing (das). NaMo was applied only at 27 das, whereas the fungicide was applied at 27, 40 and 55 das. The plants were inoculated with Colletotrichum lindemuthianum at 23 das. The anthracnose severity was reduced by 64.25% and yield increase by 156.2% in plants sprayed with fungicide compared with non-sprayed ones. The KSi, NaMo and NaMo + KSi applications reduced anthracnose severity by 31.8, 16.1 and 37.9%, respectively, while the yield increased by 16.8, 18.9 and 63.9%, respectively. There was no difference between treated and non-treated plants with KSi with respect to the leaf gas exchange parameters C
i , E and gs . However, A significantly increased by 16.9% in plants treated with Azox. The A was not affected by KSi or NaMo spray; however, it was significantly increased by 12.5% after spraying with NaMo + KSi. In conclusion, bean plants treated with Si and Mo were associated with a decrease in anthracnose as well as an enhancement in photosynthesis activity under field conditions. [ABSTRACT FROM AUTHOR]- Published
- 2015
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233. Rice Resistance to Sheath Blight Mediated by Potassium.
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Schurt, Daniel Augusto, Lopes, Ueder Pedro, Duarte, Henrique Silva Silveira, and Rodrigues, Fabrício Ávila
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EFFECT of potassium on plants ,PLANT nutrition ,NATURAL immunity ,RICE sheath blight ,PLANT development ,CULTIVARS ,PLANT inoculation - Abstract
This study investigated the effect of potassium (K) on sheath blight ( Rhizoctonia solani) development on rice plants from cultivars BR- IRGA 409 and Labelle grown in nutrient solution containing 0, 50 and 100 m m of K. Sheath blight progress on inoculated sheaths was evaluated by measuring the relative lesion length at 48, 72, 96 and 120 h after inoculation (hai). Data were used to calculate the area under relative lesion length progress curve ( AURLLPC). The foliar K concentration on leaf sheaths tissue increased by 61.48 and 116.05% to cultivars BR- IRGA 409 and Labelle, respectively, as the K rates increased from 0 to 100 m m. A linear model best described the relationship between the AURLLPC and the K rates. The AURLLPC decreased by 29.2 and 21.3% for cultivars BR- IRGA 409 and Labelle, respectively, as the K rates in the nutrient solution increased. It can be concluded that high K concentration on leaf sheaths tissue was important to decrease sheath blight symptoms on rice leaf sheaths. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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234. The burden of alcoholism in fifteen years of cirrhosis hospital admissions in Portugal.
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Marinho, Rui T., Duarte, Henrique, Gíria, José, Nunes, Joana, Ferreira, Alexandre, and Velosa, José
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- *
ALCOHOLISM , *CIRRHOSIS of the liver , *HOSPITAL admission & discharge , *MORTALITY , *HOSPITAL care , *PUBLIC health - Abstract
Background & Aims Deploying a longitudinal perspective, we observe how cirrhosis caused mortality rates in Portugal are converging with the levels reported in the European Union (15 countries). However, we still lack analysis of the burden of alcoholic cirrhosis in terms of hospital admissions and associated mortality. As Portugal may be considered a paradigmatic case in Europe, our aim was to characterize the evolution of hospital admissions for alcoholic cirrhosis between 1993 and 2008 and draw conclusions for other countries. Methods Retrospective analysis of the hepatic cirrhosis admissions in 97 Portuguese state hospitals was carried out based on the National Registry. Results We report a convergence in terms of mortality rates resulting from cirrhosis between Portugal and European Union (a differential of 6.7 deaths per 100 000 habitants in 1994 to 0.4 in 2008). We accounted for 81 543 hospital admissions for cirrhosis: 84% for alcoholic cirrhosis and 16% for non-alcoholic cirrhosis. Hospital admissions have increased 29% in men and with no increase in women. In the male, alcoholic cirrhosis patient group aged between 40 and 54, the rise in hospital admissions was more pronounced with an increase of around 45%. These patients underwent longer lengths of stay and reported higher mortality rates and passing away 20 years earlier than the average national expectancy of life. Conclusions These data draw attention to the burden of alcohol consumption not only in Portugal but also in other countries and its impacts on hospital systems and on policy making. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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- View/download PDF
235. Assessing daytime downward longwave radiation estimates for clear and cloudy skies in Southern Brazil
- Author
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Duarte, Henrique Ferro, primary, Dias, Nelson Luís, additional, and Maggiotto, Selma Regina, additional
- Published
- 2006
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236. Calcificações hepáticas: freqüência e significado
- Author
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Bezerra, Alexandre Sérgio de Araújo, primary, D'Ippolito, Giuseppe, additional, Martelli, Pierpaolo, additional, Pinto, Gustavo Alfredo Duarte Henrique, additional, Galvão Filho, Mário Melo, additional, and Szejnfeld, Jacob, additional
- Published
- 2003
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237. Control mechanisms and perceived organizational supportExploring the relationship between new and traditional forms of control.
- Author
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Costa, Tiago, Duarte, Henrique, and Palermo, Ofelia A.
- Subjects
ASSOCIATION management ,ORGANIZATIONAL communication ,ORGANIZATIONAL structure ,ORGANIZATIONAL change ,VALUES (Ethics) - Abstract
Purpose – Taking into account the need to make a clearer distinction between traditional and new organizational controls, the purpose of this paper is to investigate similarities and differences between those two forms and explore the extent to which new forms of control can be operationalized from a quantitative point of view. Design/methodology/approach – Suggesting that new organizational controls can be understood also in light of quantitative paradigms, the paper develops and tests a scale to measure the existence of this type of controls, examine its construct validity and evaluate its convergent validity. Findings – The theoretical dimensions of new controls have empirical correspondence. Input and behaviour controls are strongly associated with the promotion of values and beliefs in organizations. New controls become responsible for employees’ acceptance of companies’ management, an aspect measured by perceived organizational support (POS). Research limitations/implications – The study presents two challenges linked to the lack of evaluation of the possible process mediators that measure the subjectification of the individual, and to the lack of data coming from the organizational level. Limitations can be addressed by multi-level studies using measures that would avoid single variance biases. The need for companies to pay more attention to organizational discourses and to the promotion of specific values (that can enrich traditional controls), and the impact this might generate on POS and future reciprocity, are the practical implications of the study. Originality/value– The impact of new organizational controls can be measured by scales rather than investigated only with qualitative approaches. Furthermore, it can be observed that the promotion of values and beliefs strongly increases POS. Such dimension can reduce employees’ resistance when compared to output controls or controls based on changes in surveillance technologies and structural change processes. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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238. Silicon and Triadimenol for the Management of Coffee Leaf Rust.
- Author
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Lopes, Ueder P., Zambolim, Laércio, Souza Neto, Pedro N., Duarte, Henrique S. S., Ribeiro, José Ivo, Souza, Antônio F., and Rodrigues, Fabricio Á.
- Subjects
COFFEE rust disease ,TRIADIMEFON ,SILICON ,FUNGICIDES ,PLANT diseases ,PLANT nutrition ,DISEASE incidence - Abstract
This study documents an experiment that was undertaken in the 2006/2007, 2007/2008 and 2008/2009 growing seasons on Coffea arabica cv. 'Catuaí Vermelho IAC 144' that sought to evaluate the effects of various calcium silicate rates combined with the fungicide triadimenol on the incidence of coffee leaf rust. The experimental design was a randomized complete block in a split plot with five treatments (with varied calcium silicate rates and with or without triadimenol) and four replications. Each experimental unit (split plot) consisted of seven coffee plants (14 m
2 ), which were the central five plants used for the evaluations. Calcium silicate ( CS) and lime (L) were used according to the following mixtures (M): M1: 0% CS and 100% L; M2: 25% CS and 75% L; M3: 50% CS and 50% L; M4: 75% CS and 25% L; and M5: 100% CS and 0% L. The leaf Si concentration did not increase as CS rates increased in the soil. There was no reduction in the area under rust progress curve ( AURPC) as the rates of CS increased in the soil. During the growing seasons 2006/2007, 2007/2008 and 2008/2009, rust incidence reached 94, 96 and 92% on plants that did not receive triadimenol, respectively, whereas the incidence did not exceed 6, 38 and 16%, respectively, for those plants that did. For yield, no interaction was observed between the calcium silicate rates and with or without triadimenol. The yield increased by 117% for plants receiving triadimenol compared with those that did not. The 3-year experiments indicated that soil amendment with calcium silicate had no effect on either reducing coffee leaf rust incidence or increasing yield. Conversely, as expected, coffee leaf rust symptoms were dramatically reduced on plants sprayed with triadimenol, and this was accompanied by a significant gain in yield. [ABSTRACT FROM AUTHOR]- Published
- 2014
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239. Navigation, Guidance and Control of Underwater Vehicles within the Widely scalable Mobile Underwater Sonar Technology Project: an overview★
- Author
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Al-Khatib, Habib, Antonelli, Gianluca, Caffaz, Andrea, Caiti, Andrea, Casalino, Giuseppe, Bielic de Jong, Ivan, Duarte, Henrique, Indiveri, Giovanni, Jesus, Sergio, Kebkal, Konstantin, Pascoal, Antonio, and Polani, Daniel
- Abstract
The WiMUST (Widely scalable Mobile Underwater Sonar Technology) project aims at expanding and improving the functionalities of current cooperative marine robotic systems, effectively enabling distributed acoustic array technologies for geophysical surveying with a view to exploration and geotechnical applications. Recent developments have shown that there is vast potential for groups of marine robots acting in cooperation to drastically improve the methods available for ocean exploration and exploitation. Traditionally, seismic reflection surveying is performed by vessel towed streamers of hydrophones acquiring reflected acoustic signals generated by acoustic sources (either towed or onboard a vessel). In this context, geotechnical surveying for civil and commercial applications (e.g., underwater construction, infrastructure monitoring, mapping for natural hazard assessment, environmental mapping, etc.) aims at seafloor and sub-bottom characterization using towed streamers of fixed length that are extremely cumbersome to operate. The vision underlying the WiMUST project is that of developing advanced cooperative and networked control / navigation systems to enable a large number (tens) of marine robots (both on the surface and submerged) to interact by sharing information as a coordinated team (not only in pairs). The WiMUST system may be envisioned as an adaptive variable geometry acoustic array.
- Published
- 2015
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240. Development and validation of a set of standard area diagrams to estimate severity of potato early blight.
- Author
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Duarte, Henrique, Zambolim, Laércio, Capucho, Alexandre, Júnior, Antonio, Rosado, André, Cardoso, Carine, Paul, Pierce, and Mizubuti, Eduardo
- Abstract
Standard area diagrams (SADs) to assess the severity of potato early blight ( Alternaria grandis) on leaves of potato ( Solanum tuberosum L.) were developed and validated. The proposed SADs include images of leaves with 10 distinct disease severities (0.1, 1, 3, 5, 10, 20, 40, 60, 80 and 100 %). The SADs were validated by 12 raters who had no previous experience in evaluating plant disease. Lin's concordance correlation analysis of estimated vs. actual disease severity (based on image analysis) showed that precision and accuracy improved for most raters using the SADs, compared to assessments made without the SADs. The SADs improved accuracy (coefficient of bias, C = 0.97 and 0.99, without and with SADs, respectively) and agreement (Lin's concordance correlation coefficient, ρ = 0.91 and 0.98 without and with SADs, respectively) of the estimates of severity. Severity estimates were more reliable when using SADs (coefficient of determination, R = 0.80 unaided and R = 0.95 with SADs, and the intra-class correlation ρ = 0.86 without SADs and ρ = 0.97 using the SADs). The SADs improved raters' ability to accurately, precisely and reliably estimate potato early blight severity, and as such can be used to assess severity for several purposes, including breeding for resistance, fungicide screening, and pathotype characterization. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
241. Development and validation of a standard area diagram set to assess blast severity on wheat leaves.
- Author
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Rios, Jonas, Debona, Daniel, Duarte, Henrique, and Rodrigues, Fabrício
- Abstract
This study aimed to develop and validate a standard area diagram set (SADS) to quantify the severity of blast, caused by Pyricularia oryzae, on wheat leaves. The SADs has ten levels: 0.1, 1, 5, 10, 22, 32, 42, 52, 62 and 72 % blast severity. To validate the SADs, 12 inexperienced raters estimated disease severity on 50 images of leaves from cultivars BR-18 (susceptible) and BRS-229 (partially resistant). Blast severity was first estimated without the use of the SADs on 50 leaves with a range of blast severity. The same raters evaluated the same 50 leaves using the SADs as an aid. The SADs improved accuracy (coefficient of bias, C = 0.88 and 0.99, without and with SADs, respectively) and agreement (Lin's concordance correlation coefficient, ρ = 0.84 and 0.96 without and with SADs, respectively) of the estimates of severity. The absolute error was (-) 52 % without the SADs and (-) 24 % when using SADs as an aid. Severity estimates were more reliable when using SADs (R = 0.87 unaided and R = 0.92 with SAD). The SADs proposed in this study will improve accuracy and reliability of estimates of blast severity on wheat leaves. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
242. Assessing the shear-sheltering theory applied to low-level jets in the nocturnal stable boundary layer.
- Author
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Duarte, Henrique, Leclerc, Monique, and Zhang, Gengsheng
- Subjects
- *
TURBULENCE , *SHEAR (Mechanics) , *EDDIES , *ATMOSPHERIC models - Abstract
This paper investigates the existence of shear sheltering on turbulence data over a quasi-ideal experimental site in Oklahoma, USA. Originally developed for engineering flows, the shear-sheltering theory is predicated upon the idea of low-level jets blocking large eddies aloft, preventing them from propagating to the surface. In this scenario, suppression of low-frequency turbulence energy and reduction of surface fluxes would be expected. Results from the Oklahoma experiment show instead an enhancement of surface turbulence intensity and of the relative contribution of large scales to total (co)variances for low-level jet cases with strong shear, thus suggesting the absence of shear sheltering at the site. The results underline the complexity of surface-atmosphere interactions in nocturnal stable conditions. Atmospheric modeling of exchange using various scenarios of surface characteristics, flow regimes, and low-level jet properties is suggested to further assess the potential applicability of the shear-sheltering theory to atmospheric flows. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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- View/download PDF
243. The impact of logging on the surrounding flow in a managed forest.
- Author
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Zhang, Gengsheng, Leclerc, Monique, Karipot, Anandakumar, Duarte, Henrique, Mursch-Radlgruber, Erich, and Gholz, Henry
- Abstract
The influence of a freshly logged area in a managed pine forest on the flow field is investigated by comparing sodar wind profile data over the forest canopy with the synoptic wind field extracted from North American Regional Reanalysis, National Centers for Environmental Prediction. As a consequence of the pressure gradient arising from the sharp temperature difference between the clearcut and the surrounding uncut forests, the local wind direction over the forest measured with the sodar departs dramatically from the prevailing synoptic wind direction when the latter is transverse to the clearcut-sodar direction. Sodar measurements also indicate systematic strong updrafts during daytime followed by nighttime downdrafts with wind coming from the logged area. This suggests the presence of horizontal advection carrying daytime warm air (or nighttime cool air) from the clearcut to the forested area. This paper also examines the influence of wind velocity, clearcut fetch, and solar radiation on locally generated circulations and advection. The presence of local circulations arising from contrasting neighboring surface characteristics well outside the footprint is of particular relevance for atmospheric flux sites where robust surface-atmosphere exchange values are sought. This study highlights the high level of circumspection required at the time of identifying locations for flux sites. It also suggests vigilant monitoring of the surrounding landscape during eddy-flux measurements particularly in actively managed landscapes. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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- View/download PDF
244. The Simulation of the Southern Great Plains Nocturnal Boundary Layer and the Low-Level Jet with a High-Resolution Mesoscale Atmospheric Model.
- Author
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Werth, David, Kurzeja, Robert, Dias, Nelson Luíís, Zhang, Gengsheng, Duarte, Henrique, Fischer, Marc, Parker, Matthew, and Leclerc, Monique
- Subjects
ATMOSPHERIC boundary layer ,ATMOSPHERIC models ,ATMOSPHERIC radiation ,DIURNAL variations in meteorology ,JET streams ,SIMULATION methods & models ,ATMOSPHERIC turbulence - Abstract
A field project over the Atmospheric Radiation Measurement--Cloud and Radiation Test Bed (ARM--CART) site during a period of several nights in September 2007 was conducted to explore the evolution of the low-level jet (LLJ). Data were collected from in situ (a multilevel tower) and remote (sodar) sensors, and the observed LLJ activity during the project was found to agree well with data from earlier studies regarding jet speed, height, and direction. To study nocturnal boundary layer (NBL) behavior, the Regional Atmospheric Modeling System was used to simulate the ARM--CART NBL field experiment and was validated against the data collected from the site. This model was run at high resolution for calculating the interactions among the various motions within the boundary layer and their influence on the surface. The model faithfully simulated the formation and dissolution of the low-level nocturnal jet during a synoptic situation in which low pressure with warm southerly advection replaced high pressure. An additional simulation at 32.5-m resolution was performed for the most stable 5.5-h period, using a turbulence scheme adjusted to allow for greater resolved turbulent kinetic energy, and the model reproduced the turbulence statistics as determined by a power spectrum. The benefit of the high-resolution simulation is evident in the much more realistically resolved model turbulent kinetic energy and the fluxes of momentum, heat, and water vapor. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
245. Glycans as Targets for Drug Delivery in Cancer.
- Author
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Diniz, Francisca, Coelho, Pedro, Duarte, Henrique O., Sarmento, Bruno, Reis, Celso A., and Gomes, Joana
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THERAPEUTIC use of monoclonal antibodies ,THERAPEUTIC use of antineoplastic agents ,POLYSACCHARIDES ,DRUG delivery systems ,DRUG approval ,DRUG efficacy ,VACCINES ,GLYCOSYLATION ,CELL physiology ,GLYCOPROTEINS ,TUMORS ,NANOPARTICLES ,CARRIER proteins ,DRUG toxicity - Abstract
Simple Summary: Alterations in glycosylation are frequently observed in cancer cells. Different strategies have been proposed to increase drug delivery to the tumor site in order to improve the therapeutic efficacy of anti-cancer drugs and avoid collateral cytotoxicity. The exploitation of drug delivery approaches directed to cancer-associated glycans has the potential to pave the way for better and more efficient personalized treatment practices. Such strategies taking advantage of aberrant cell surface glycosylation patterns enhance the targeting efficiency and optimize the delivery of clinically used drugs to cancer cells, with major potential for the clinical applications. Innovative strategies have been proposed to increase drug delivery to the tumor site and avoid cytotoxicity, improving the therapeutic efficacy of well-established anti-cancer drugs. Alterations in normal glycosylation processes are frequently observed in cancer cells and the resulting cell surface aberrant glycans can be used as direct molecular targets for drug delivery. In the present review, we address the development of strategies, such as monoclonal antibodies, antibody–drug conjugates and nanoparticles that specific and selectively target cancer-associated glycans in tumor cells. The use of nanoparticles for drug delivery encompasses novel applications in cancer therapy, including vaccines encapsulated in synthetic nanoparticles and specific nanoparticles that target glycoproteins or glycan-binding proteins. Here, we highlight their potential to enhance targeting approaches and to optimize the delivery of clinically approved drugs to the tumor microenvironment, paving the way for improved personalized treatment approaches with major potential importance for the pharmaceutical and clinical sectors. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
246. How can biosphere models simulate enough vegetation biomass in the mountains of the western United States? Implications of meteorological forcing.
- Author
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Duarte, Henrique F., Raczka, Brett M., Bowling, David R., Wang, Aihui, Buotte, Polly C., and Lin, John C.
- Subjects
- *
MOUNTAIN plants , *BIOSPHERE , *WATER supply , *SPATIAL resolution , *BIOMASS - Abstract
Most carbon stocks and fluxes in the western United States are found in mountainous terrain, where observations and modeling are difficult. Terrestrial biosphere models generally underestimate above-ground biomass (AGB) over this region. Here, we identify methods to reduce this underestimation by focusing upon 1) biases in meteorological datasets, 2) model representation of water stress, and 3) spatial resolution. We adopted the widely-used Community Land Model version 4.5 (CLM 4.5) with six different meteorological datasets and found a 6-fold variation in simulated AGB across Utah/Colorado. Simulations underestimated AGB because of warm and dry biases within the meteorological datasets that reduced water availability and restricted plant growth. To eliminate the AGB underestimation we adopted a meteorological dataset designed for complex terrain (gridMET), combined with a representation of plant hydraulic stress (CLM 5.0). Conversely, changes in spatial resolution (meteorological variables and land surface description) had negligible impact on simulated AGB. • Default CLM 4.5 underestimated above-ground biomass (AGB) across Central Rockies. • Modeled AGB varied 6-fold with bias-corrected meteorological datasets. • GridMET meteorology and representing plant hydraulics removed the low bias in AGB. • Simulations implemented at fine and coarse spatial resolution provided the same AGB. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
247. Turbulence and Diffusion on Weakly Stable and Stable Nights near a 300 m Tower in a Complex Landscape.
- Author
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Kurzeja, Robert J., Leclerc, Monique Y., Duarte, Henrique F., Zhang, Gengsheng, Parker, Matthew J., Werth, David W., Chiswell, Steven R., and Buckley, Robert L.
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- *
ATMOSPHERIC boundary layer , *CLIMATE change models , *TURBULENCE , *MIXING height (Atmospheric chemistry) , *TOWERS , *BOUNDARY layer (Aerodynamics) , *FREE surfaces - Abstract
Turbulence and winds below 328 m were measured on 5 successive nights in a program to study tracer transport in the nocturnal boundary layer at a site with moderately complex terrain and mixed land use. The instruments included sonic anemometers and CO2/H2O analyzers at four levels on a 328 m tall tower, a minisodar/RASS system, a midrange sodar, a ceilometer, and an array of 61 m towers. Preliminary simulations indicated satisfactory perfluorocarbon mixing to 68 m but insufficient transport to the 328 m level on both weakly stable and stable nights, possibly due to insufficient turbulence kinetic energy and/or small vertical mixing lengths, or the presence of meso-β fronts, e.g., sea-breeze fronts, that could transport trace chemicals efficiently to 328 m. To examine the problem further, time–height distributions of turbulence kinetic energy (TKE), mixing length, Richardson number, potential temperature, and winds were derived from the observations of mean winds and temperature and the TKE budget equation, interpolated to fit the observations, under the flux/gradient and z-less scaling assumptions, and displayed with aerosol profiles. The results indicated higher and more variable levels of TKE and mixing lengths above a typical turbulence maximum at 30–50 m. Oscillations with periods of ∼2 h were common and occasional meso-β fronts and shear zones between 75 and 150 m were seen, which increased TKE aloft and in some cases led to a poorly defined boundary layer top. Significance Statement: The atmosphere's boundary layer is the interface between the free atmosphere and natural and human activity near Earth's surface. The daytime boundary layer has been studied extensively and, because of vigorous sun-driven mixing, is well understood and readily parameterized in forecast and global climate models. In contrast, the nocturnal boundary layer is less well understood or predictable because turbulence is weak and tends to decouple it from the surface and the free atmosphere above. This paper focuses on the least-studied upper part of the nocturnal boundary layer over the southeastern United States where topography and land–sea contrast affect winds, turbulence, and chemical transport. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
248. The role of O-glycosylation in human disease.
- Author
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Magalhães, Ana, Duarte, Henrique O., and Reis, Celso A.
- Subjects
- *
POST-translational modification , *DRUG target , *GENETIC disorders , *COMMUNICABLE diseases , *CANCER invasiveness - Abstract
O-glycosylation is a highly frequent post-translation modification of proteins, with important functional implications in both physiological and disease contexts. The biosynthesis of O-glycans depends on several layers of regulation of the cellular glycosylation machinery, being organ-, tissue- and cell-specific. This review provides insights on the molecular mechanism underlying O-glycan biosynthesis and modification, and highlights illustrative examples of diseases that are triggered or modulated by aberrant cellular O-glycosylation. Particular relevance is given to genetic disorders of glycosylation, infectious diseases and cancer. Finally, we address the potential of O-glycans and their biosynthetic pathways as targets for novel therapeutic strategies. • O-glycosylation is a highly regulated process with key roles in health and disease. • Defects affecting the O-glycan biosynthetic machinery impact several human diseases. • O-glycans are key modulators of host-pathogen interplay and immune response. • Aberrant cellular O-glycosylation promotes oncogenic signaling and tumor progression. • O-glycans represent promising molecular targets for innovative therapeutic approaches. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
249. Insights on Ebb glycosylation – contributions to precision oncology
- Author
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Duarte, Henrique O., Reis, Celso A., and Gomes, Joana
- Abstract
Although the ErbB receptors remain incontrovertible drivers of human neoplastic transformation, the clinical performance of ErbB-directed therapeutics is significantly undermined by the emergence of molecular resistance. The ErbB extracellular region undergoes extensive post-translational glycosylation, which crucially impacts on receptor structure, functionality, and therapeutic response, thereby hindering efforts towards the successful translation of such molecular insights into the clinical setting. The unraveling of the ErbB site-specific glycome will allow for the design of more efficient ErbB-directed therapeutic strategies capable of circumventing molecular resistance, the establishment of novel prognostic and predictive clinical biomarkers supporting improved patient stratification, and the rational guidance of therapeutic decisions.
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- 2022
- Full Text
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250. Gray mold in strawberries in the Paraná state of Brazil is caused by Botrytis cinerea and its isolates exhibit multiple-fungicide resistance.
- Author
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Maia, Juliana Nicolau, Beger, Giovana, Pereira, Wagner Vicente, May De Mio, Louise Larissa, and da Silva Silveira Duarte, Henrique
- Subjects
FUNGICIDE resistance ,FUNGICIDES ,STRAWBERRIES ,BOTRYTIS cinerea ,MOLD control ,FUNGAL growth ,DISEASE management ,PREVENTIVE medicine - Abstract
The objectives of this work were to investigate the Botrytis species that cause gray mold in strawberries in Paraná and to study their sensitivity to fungicides: procymidone (P), iprodione (I), boscalid (B), thiophanate-methyl (T), fluazinam (F), azoxystrobin (A) and difenoconazole (D). The identification of 150 isolates of Botrytis sp. was carried out by amplifying the DNA by PCR using specific primers. The sensitivity to fungicides was determined by in vitro assays with discriminatory doses and EC 50 (effective concentration to inhibit 50% of the growth of the fungus), molecular characterization of mutations and ex vivo assays for disease control efficacy. Thirty phenotypes were selected from combinations (S-sensitive and R-resistant) for the EC 50 studies. Molecular characterization was performed using specific primers for mutations in the cyt b, bos1 and β-tubulin genes to confirm the resistance genotype. Tests were carried out with fruit treated with the fungicides (P), (B), (F) and (A) x the different phenotypes. All isolates were confirmed as Botrytis cinerea. Forty-one isolates were classified as fungicide sensitive phenotypes and of these, six isolates showed resistance to all seven tested fungicides. The percentage of isolates resistant to the fungicides azoxystrobin, boscalid, difenoconazole, fluazinam, iprodione and procymidone was 90.7; 45.3; 33.3; 32.7; 44.0 and 43.3%, respectively. A total of 94.6% isolates were classified as highly resistant to thiophanate-methyl. The EC 50 for the fungicides procymidone, fluazinam and boscalid ranged from less than 0.1 to greater than 100 μg/ml. For azoxystrobin, most isolates had an EC 50 greater than 100 μg/ml. Isolates with more than one mutation for different fungicides were found. For the assay in fruits with infections from the field, only the fungicide fluazinam differed from the control treatment, showing lower final incidence of 33.3% and control efficiency of 55.6%. For the assay with inoculated fruits, the fungicide fluazinam best controlled the disease for the three isolates presenting an average final incidence of 33.3% and an average control efficiency of 61.9%. Therefore, disease management in the state of Paraná should be reviewed in terms of registering new fungicides to gray mold and the use of integrated management measures to reduce the reliance on fungicides. • All isolates were confirmed as Botrytis cinerea. • Phenotypes with resistant to seven tested fungicides were detected. • Isolates with more than one mutation for different fungicides were found. • Fluazinam is the most efficient fungicide for the management of gray mold. • This study provides important information for integrated control of gray mold. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
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