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| Registros recuperados: 19 | |
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| Barberena,Iara Magalhães; Espindula,Marcelo Curitiba; Araújo,Larissa Fatarelli Bento de; Marcolan,Alaerto Luiz. |
| Abstract: The objective of this work was to evaluate urease inhibitors for the reduction of ammonia volatilization in Amazonian soils. The work was carried out on a clayey yellow Oxisol, a clayey red Oxisol, and on a light silty Ultisol. Each experiment was conducted in split plots, using standard urea, urea + a benzimidazole-type urease inhibitor (BZI1), urea + a benzoylthiourea-type urease inhibitor (RTB68), urea + N-(n-butyl) triamide thiophosphate (NBPT), or a fertilizer-free control. Volatilized ammonia was collected at 48, 96, 144, 192, 240, 288, 336, and 384 hours after fertilization. Ammonia volatilization reached a maximum at 144 hours in the urea, urea + benzimidazole, and urea + benzoylthiourea treatments. A peak level was reached at 192 and 288... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benzimidazole; Benzoylthiourea; Oxisol; Plinthosol; Urease inhibitors. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103800 |
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| Oliveira,Harley Nonato de; Pratissoli,Dirceu; Pedruzzi,Eder Pin; Espindula,Marcelo Curitiba. |
| Ninfas de Podisus nigrispinus (Heteroptera: Pentatomidae) têm sido criadas em laboratório com larvas de Tenebrio molitor L. (Coleoptera: Tenebrionidae). No entanto, não existem relatos sobre a predação, no campo ou em laboratório, de P. nigrispinus em Spodoptera frugiperda (Lepidoptera: Noctuidae), uma das principais pragas de inúmeras culturas no Brasil. Este trabalho teve o objetivo de avaliar o desenvolvimento ninfal e características reprodutivas do percevejo predador P. nigrispinus em lagartas de S. frugiperda e em larvas de T. molitor, em laboratório. A presa S. frugiperda proporcionou ao predador menor longevidade, maior produção e viabilidade de ovos do que as larvas de T. molitor. Esses resultados demonstram que a lagarta S. frugiperda melhora as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Controle biológico; Percevejo predador; Lagarta do cartucho. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004001000001 |
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| Dias,Jairo Rafael Machado; Wadt,Paulo Guilherme Salvador; Partelli,Fábio Luiz; Espindula,Marcelo Curitiba; Perez,Daniel Vidal; Souza,Fábio Régis; Bergamin,Anderson Cristian; Delarmelinda,Elaine Almeida. |
| Abstract: The objective of this work was to determine reference values for evaluating the nutritional status of 'Pêra' orange trees in different fruiting stages, using the compositional nutrient diagnosis (CND) method. The study used 243 leaf samples from 81 plots, with samplings performed in plants bearing fruits with three and six months of age, and also in the main harvest (nine months). Plots with productivity higher than 30 Mg ha-1 were selected for the establishment of reference standards. Three normal ranges were evaluated for each nutrient in the reference population, comprehended by the confidence interval (CI) of the foliar content averages, by the mean±standard deviation (±SD), and by the mean±⅔SD. Regardless of the normal range of nutrients... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus limonia; Citrus sinensis; DRIS; Leaf sampling; Nutritional balance index; Reference population. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900776 |
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| Zanuncio,José Cola; Sossai,Marcos Franklin; Flechtmann,Carlos Alberto Hector; Zanuncio,Teresinha Vinha; Guimarães,Edylene Marota; Espindula,Marcelo Curitiba. |
| Species of Scolytidae and Platypodidae were evaluated in a plantation using a clone of Eucalyptus grandis x Eucalyptus urophylla in the State of Minas Gerais, Brazil. Wood disks with galleries were taken from 15 eucalyptus trees between 0.5 and 1.5 m height. After collection, all trees attacked were burned. Woodborers obtained from these disks were identified as Premnobius cavipennis, Premnobius ambitiosus, Dryocoetoides cristatus (Coleoptera: Scolytidae) and Euplatypus parallelus (Coleoptera: Platypodidae). This is the first report of D. cristatus, a Brazilian native species, damaging eucalyptus, which shows its adaptation to this plant. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Premnobius; Dryocoetoides; Euplatypus. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000500013 |
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| Partelli,Fábio Luiz; Espindula,Marcelo Curitiba; Marré,Wellington Braida; Vieira,Henrique Duarte. |
| The period between anthesis and fruit ripening varies according to the Conilon coffee (Coffea canephora) genotype. Therefore, the time of the nutritional requirements for fruit formation may differ, depending on the formation phase and the genotype, and may directly affect split application of fertilizer. The aim of this study was to quantify the accumulation of dry matter and N, P, K, Ca, Mg and S at several stages in the fruit of the Conilon coffee genotype with different ripening cycles, which may suggest the need for split application of fertilizer in coffee. The experiment was carried out in the municipality of Nova Venecia, Espírito Santo, Brazil, throughout the reproductive cycle. The treatments were composed of four coffee genotypes with different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea canephora; Genotypes; Maturation cycle; Fertilization management. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100021 |
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| Marré,Wellington Braida; Partelli,Fábio Luiz; Espindula,Marcelo Curitiba; Dias,Jairo Rafael Machado; Gontijo,Ivoney; Vieira,Henrique Duarte. |
| ABSTRACT The number of days between anthesis and maturation of conilon coffee berries varies according to the genotype. Thus, it is believed that periods of greater nutrient demand for fruit formation also vary according to the genotype, directly influencing fertilizer management. The goal of this study was to establish accumulation curves for the micronutrients boron, copper, iron, manganese, and zinc in conilon coffee trees with different maturation cycles. The experiment was conducted in Nova Venécia, State of Espírito Santo, Brazil, during the reproductive cycle of the 2010/2011 crop year. Four coffee genotypes with different maturation cycles (early, intermediate, late, and super-late) were studied. A completely randomized experimental design was used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea canephora; Genotypes; Fertilizer management. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501456 |
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| Campanharo,Marcela; Monnerat,Pedro Henrique; Espindula,Marcelo Curitiba; Rabello,Wanderson Souza; Ribeiro,Guilherme. |
| Despite the importance of nickel (Ni) in the N metabolism of legumes, common bean (Phaseolus vulgaris L.) is considered very sensitive to Ni doses. The objective in this study was to characterize the toxicity symptoms of Ni in common bean cv. Pérola. The experiment was conducted in greenhouse in the campus of the Universidade Estadual do Norte Fluminense - Darcy Ribeiro, Campos dos Goytacazes - RJ. Solutions containing 0; 20; 40; 60 and 100 mg L-1 of Ni, in the form of nickel chloride hexahydrate (NiCl2.6H2O), were applied to shoots of common bean plants at the rate of 2.5 mL of solution per plant of common bean, 25 days after sowing. Plants of common bean treated with 0; 20; 40 and 60 mg L-1 of Ni showed no toxicity symptoms. Plants treated with 100 mg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L; Chlorosis; Necrosis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902010000300024 |
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| Giuriatto Júnior,Jurandyr José Ton; Espindula,Marcelo Curitiba; Araújo,Larissa Fatarelli Bento de; Vasconcelos,Jaqueline Martins; Campanharo,Marcela. |
| ABSTRACT The intrinsic characteristics of the vegetative propagule may influence the rooting speed and shoot growth, as well as the final physiological quality of clonal seedlings of Coffea canephora. The aim of this study was to evaluate the growth and physiological quality of ‘Robusta’ coffee seedlings produced from propagules (stem cuttings) with different cutting ages. The study was conducted in a greenhouse, in the district of Ouro Preto do Oeste, in Rondônia, Brazil (10˚45’43” S and 62˚15’10” W). The ages of the cuttings were 30, 60, 90, 120 and 150 days, corresponding to five positions on the secondary orthotropic stem (sprout), from the apex to the base. Dry matter accumulation, and relative and absolute growth rates were evaluated for 188 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rubiaceae; Coffea canephora; Cuttings; Maturation stage; Weight accumulation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400403 |
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| Oliveira,Harley Nonato de; Zanuncio,José Cola; Pedruzzi,Eder Pin; Espindula,Marcelo Curitiba. |
| Thyrinteina arnobia, is one of the most important defoliating caterpillars of Eucalyptus in Brazil The objective of this work was to evaluate the development and the reproduction of feeding on leaves of guava (Psidium guajava) or Eucalyptus grandis in the 15th generation, after rearing this species for 14 genrations on guava leaves. T. arnobia showed shorter larval period, better viability of caterpillars and pupae, heavier pupae, higher number of eggs per female, better egg viability and shorter longevity of females in guava leaves than in Eucalyptus leaves. The better development and reproduction with P. guajava showed that this insect could be reared in laboratory with guava leaves. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava; Defoliator; Mass rearing; Host; Eucalyptus grandis. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600016 |
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| Oliveira,Harley Nonato de; Espindula,Marcelo Curitiba; Duarte,Marcela Marcelino; Pereira,Fabrício Fagundes; Zanuncio,José Cola. |
| The aim of this study was to evaluate the development and reproduction of P. nigrispinus in laboratory when fed with T. arnobia reared on guava leaves. This predator showed nymphal stage of 21.11 days, survival of 60% and periods of pre-oviposition, number of eggs/mass and eggs/female and egg viability of 6.10 days, 26.24 eggs, 314.90 eggs and 82.65%, respectively. These results demonstrated that T. arnobia fed with guava leaves was an adequate supply of food to P.nigrispinus. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Defoliator; Stinkbug. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000300001 |
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| Espindula,Marcelo Curitiba; Rocha,Valterley Soares; Souza,Leandro Torres de; Souza,Moacil Alves de; Campanharo,Marcela; Grossi,José Antônio Saraiva. |
| The objective in this study was to evaluate the effects of nitrogen rates in association with rates of the growth retardant trinexapac-ethyl on wheat. The experiment was conducted in Viçosa, MG and arranged in a 5×4 factorial, randomized block design, with four repetitions. A combination of five nitrogen rates (30, 60, 90, 120 and 150kg ha-1) with four rates of trinexapac-ethyl (0, 62.5, 125 and 187.5g ha-1) were tested. Trinexapac-ethyl promotes reduction of soot dry mass and grain yield at the lowest N rates, but at the highest N rates there is increase in these characteristics. The combination between N and trinexapac-ethyl rates that promotes higher shoot dry mass is 150kg ha-1 and 187g ha-1 but that promotes higher grain yield is 100kg ha-1 and 120g... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Plant height; Lodging; Grain yield. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200002 |
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| Moraes,Marcos Santana; Rocha,Rodrigo Barros; Teixeira,Alexsandro Lara; Espindula,Marcelo Curitiba; Silva,Camila Andrade; Lunz,Aureny Maria Pereira. |
| ABSTRACT: The development of Coffea canephora cultivars is based on the characterization of genotype × environment interaction, which is interpreted to quantify the differential behavior of clones at different cultivation sites. The objective of this research was to study the genotype x environment interaction aiming to select clones of broad and specific adaptation to different environments of the Western Amazon. Twelve clones with hybrid characteristics of the botanical varieties Conilon and Robusta and four open pollinated clones, had their performance evaluated in comparison with four controls. The genotype × environment interaction was interpreted based on the environmental quality index, the non-parametric estimator of Lin and Binns, 1988 and on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: G×E interaction; Genetic progress; Coffee. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100402 |
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| Oliveira,Harley Nonato de; Espindula,Marcelo Curitiba; Pratissoli,Dirceu; Pedruzzi,Eder Pin. |
| Esse trabalho avaliou o efeito de diferentes presas e da combinação destas sobre percevejo Podisus nigrispinus. O delineamento experimental foi inteiramente casualizado com três tratamentos e 60 repetições. No tratamento um (T1), os percevejos receberam como alimento, lagartas de Spodoptera frugiperda, de 4o estádio, durante todo o seu ciclo de vida, no tratamento dois (T2), larvas de Tenebrio molitor, também durante o todo ciclo, enquanto que, no tratamento três (T3), foram oferecidas lagartas de S. frugiperda do 2º ao 4º estádios, e larvas de T. molitor do 4º estádio até o final do ciclo de vida. O ganho de peso em todas as fases ninfais e em adultos de até terceiro dia mostrou valores semelhantes de incremento, para todas as dietas utilizadas. No... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Controle biológico; Predadores; Inimigo natural. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000600043 |
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| Espindula,Marcelo Curitiba; Rocha,Valterley Soares; Souza,Moacil Alves de; Grossi,José Antônio Saraiva; Souza,Leandro Torres de. |
| Objetivou-se avaliar o efeito de doses e formas de aplicação de nitrogênio sobre o desempenho e produção de duas cultivares de trigo. O experimento, conduzido em Viçosa-MG, de maio a setembro de 2005, foi instalado segundo um esquema fatorial 2x2x5 no delineamento de blocos casualizados, com quatro repetições. Os tratamentos avaliados consistiram da combinação das cultivares de trigo, BRS 210 e Pioneiro, duas formas de aplicação de adubo nitrogenado (dose total aplicada por ocasião da semeadura ou 20 kg ha-1 na semeadura e o restante em cobertura no início da fase de perfilhamento) e cinco doses de nitrogênio (40, 60, 80, 100 e 120 kg ha-1) tendo como fonte o sulfato de amônio. A cultivar Pioneiro apresentou maior potencial produtivo que a cultivar BRS... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Adubação nitrogenada; Acamamento; Produtividade. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000600007 |
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| Registros recuperados: 19 | |
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