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| Registros recuperados: 184 | |
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| Martin, Thomas Newton; Fros, Luis Antonio Saccol; Nunes, Ubirajara Russi; Marchesan, Enio; Stecca, Jessica Deolinda Leivas; Cunha, Vinicius dos Santos. |
| There are several factors that may compromise the initial establishment of wheat crops, reduce the plant populations, and consequently affect yield components and grain yield. The objective of this study was to produce reseeding recommendations for wheat crops affected by reduced plant stands based on an economic analysis of the yield cost and the expectation of financial return. Experiments were conducted during two agricultural years (2011 and 2012) in the Experimental da Coxilha area, which belongs to the Department of Plant Science of Universidade Federal de Santa Maria, in the state of Rio Grande do Sul (Brazil). Random removals of wheat plants were undertaken, corresponding to 0, 20, 40, and 60% of the initial population of plants for the following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.00.00-9 Triticum aestivum L.; Economic analysis; Plants stand Fitotecnia. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28714 |
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| Pimentel, Leidiane Reis; Silva, Fabiano Ferreira da; Silva, Robério Rodrigues; Schio, Alex Resende; Rodrigues, Eli Santana de Oliveira; Costa, Lucas Teixeira. |
| This study aimed to evaluate the inclusion of palm kernel cake in the diet for lactating crossbred cows in feedlot system, and its implications on economic viability. We used 12 crossbred Holstein x Zebu cows assigned to three 4 x 4 Latin Squares, in the following treatments: control (without inclusion of palm kernel cake in the diet); inclusion of 50, 100 or 150 g palm kernel cake (PKC) per kg in the total dry matter (TDM). Earnings per animal showed a reduction in values, this decrease in profitability is related to the increase in feed costs, specifically, and the costs with concentrate, which increased as the palm kernel cake was included in the treatments, 0, 50, 100 and 150 g kg-1 TDM. The effect observed for profitability affected the internal rate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic analysis; Costs; Profits; Gross income.. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31150 |
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| Oliveira, Emanuela Lima de; Universidade Federal Rural de Pernambuco; Ludke, Maria do Carmo Mohaupt Marques; Universidade Federal Rural de Pernambuco; Ludke, Jorge Vitor; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Suínos e Aves; Bertol, Marisa Teresinha; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Suínos e Aves; Guidoni, Antônio Lourenço; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Suínos e Aves; Salvagni, Gizelli; Universidade do Estado de Santa Catarina. |
| O experimento foi desenvolvido com os objetivos de avaliar os efeitos da proteína concentrada de soja nas dietas de leitões no desempenho e viabilidade econômica durante a fase de creche. Foram avaliados os seguintes tratamentos em dietas pré-inicial (25 a 37 dias de idade), inicial I (37 a 50 dias de idade) e inicial II (50 a 64 dias de idade): FS a base de milho e farelo de soja Hypro; PCS-60% proteína concentrada de soja; PCSH-2h com PCS hidrolisada com enzima protease por um período de 2 horas; PCSH-8h com PCS hidrolisada com enzima protease por um período de 8 horas. No período entre 25-50 dias foi observada diferença significativa para a receita diária (p = 5,1%) e para a margem bruta (p = 2,1%). Os tratamentos PCS-60%, PCSH-2h e PCSH-8h apresentaram... |
| Tipo: Pesquisa de campo; análise laboratorial |
Palavras-chave: 5.04.03.00-1 alimento proteico; Análise econômica; Ganho de peso; Nutrição; Suinocultura proteic feedstuff; Economic analysis; Weight gain; Nutrition; Swine production. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11223 |
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| Aguilar, Poliana Batista de; Teixeira, Fábio Andrade; Silva, Fabiano Ferreira da; Pires, Aureliano José Vieira; Nascimento, Paulo Valter Nunes; Santos, Otanael Oliveira dos. |
| The objective of this study was to evaluate the effect of different levels of nitrogen on deferred pastures of Urochloa brizantha cv. Marandu, and the implications on the economic viability of production of Nellore heifers. This was a completely randomized design with four treatments (T1 = deferred pasture without nitrogen fertilization; T2 = deferred pasture fertilized with 50 kg N ha-1, T3 = deferred pasture with 100 kg N ha-1, T4 = deferred pasture with 150 kg N ha-1) and four replications (16 fertilized paddocks). First, there were used 48 Nellore heifers, average eight months of age and initial body weight of 178.69 ± 26.67 kg, with three heifers in each paddock, in all treatments, in a continuous grazing system, with variable stocking rate. Only the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic analysis; Deferment; Nitrogen fertilization; Profitability; Urea. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28375 |
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| Rosentrater, Kurt A.. |
| Maize is the most widely cultivated cereal crop worldwide, currently ranked the third most important crop globally after wheat and rice. It is a key staple food in many developing countries. However, maize is produced on a seasonal basis, usually harvest once per year. To maintain a constant supply throughout the year, maize should be properly stored. But this may entail high cost and high-energy consumption, which can contribute significant amounts of greenhouse gas emissions. In this study, three storage capacities (25,000 bu, 250,000 bu and 2,500,000 bu) of maize were evaluated for economic analysis and environmental impact. The results show that the total storage cost per bushel decreased as storage capacity increased (3.68$/bu, 1.89$/bu, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Processing Maize storage; Techno-economic analysis; Life cycle assessment; Greenhouse gas emissions; Economic analysis. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5230 |
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| Bernard, Kivumbi. |
| This study was aimed at assessing the techno-economic potential of municipal solid waste (MSW) generated in Kampala City for electricity production through gasification. The quantity, characteristics and gasification parameters were determined. In addition, the gasifier- engine system components were sized, and an economic analysis was conducted to obtain the net present value (NPV) and the payback period. This study found that 523 t/d of MSW is collected in Kampala City. The biomass component of MSW was found to be 459.5 t/d with moisture content of 71.09% on as-received basis. The physical characteristics of the gasified biomass included 11.8% moisture content, 88.2% total solids, 25.9% ash content and 57.7 kg/m3 bulk density. The resulting normalized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Municipal solid waste; Biomass; Gasification; Economic analysis; Producer gas; Electricity. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3363 |
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| Fabricio,Edom de Avila; Pacheco,Paulo Santana; Vaz,Fabiano Nunes; Lemes,Daniel Batista; Camera,Angelina; Machado,Gabriella Ibarra Ocaña. |
| ABSTRACT: The objective of this study was to evaluate various financial indicators, estimated deterministically (considering historical quotes twelve consecutive years - 2003 to 2014), on the economic feasibility of finishing steers commercialized with different weights, using the simulation technique. Performance data steers were simulated with average initial weight of 350kg, fed in feedlot and slaughtered with 410, 440, 470, 500, 530, 560 and 590kg. The feeding period varies from 46 to 185 days, respectively. Based in various economic indicators, the viability of the investment decreased linearly according to the increase in slaughter weight. The coefficient of simple linear regression and means from lowest to highest slaughter weight were,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic analysis; Beef cattle; Investment projects; Intensive systems; Microeconomics. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300931 |
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| Rodrigues,Ana Paula Oeda; Lima,Adriana Ferreira; Maciel,Patricia Oliveira; Santos,Patrícia Resplandes Rocha dos; Flores,Roberto Manolio Valladão; Silva,Adriano Prysthon da. |
| ABSTRACT: The aim of this study was to determine the most adequate stocking density for tambatinga during the initial grow-out phase in net pens, considering fish growth, health, and financial aspects. Three stocking densities (400, 500, and 600 fish m-3) were evaluated for 60 days in a completely randomized design (n=4). There were no significant differences among the stocking densities for growth performance parameters, but yield was higher in the density of 600 fish m-3 (3,909.43±397.79kg m-3) compared to 400 fish m-3 (2,656.43±665.45kg m-3). Glucose, hematocrit, and total plasma proteins levels did not differ among treatments. The production was economically feasible for the three stocking densities. However, the density of 600 fish m-3 showed the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ♀Colossoma macropomum x ♂Piaractus brachypomus; Small-scale fish farming; Growth performance; Economic analysis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100163 |
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| Apáez Barrios, Patricio. |
| Durante el temporal de 2009, se realizó un estudio de campo en Cocula, Gro. (clima cálido) y Montecillo, Méx. (clima templado) en una variedad de frijol chino (Vigna unguiculata (L.) Walp) de crecimiento indeterminado. Se evaluó el rendimiento de grano, biomasa total, índices de crecimiento, eficiencia en el uso del agua y rentabilidad económica en espaldera convencional (FS), espaldera de maíz (FM) y girasol (FG), con y sin biofertilizantes. Se registró la temperatura máxima y mínima, cantidad de lluvia y evaporación. La producción de vaina verde solo se evaluó en clima cálido en función del tipo de espaldera. El diseño experimental fue de bloques completos al azar con cuatro repeticiones. El ciclo del cultivo se acortó en 25 días en clima cálido (125... |
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Palavras-chave: Vigna unguiculata; Tipo de espaldera; Biofertilizantes; Rentabilidad económica; Trellises types; Biofertilizer; Economic analysis; Maestría; Botánica; Unidades de calor. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/217 |
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| Apáez Barrios, Patricio. |
| Durante el temporal de 2009, se realizó un estudio de campo en Cocula, Gro. (clima cálido) y Montecillo, Méx. (clima templado) en una variedad de frijol chino (Vigna unguiculata (L.) Walp) de crecimiento indeterminado. Se evaluó el rendimiento de grano, biomasa total, índices de crecimiento, eficiencia en el uso del agua y rentabilidad económica en espaldera convencional (FS), espaldera de maíz (FM) y girasol (FG), con y sin biofertilizantes. Se registró la temperatura máxima y mínima, cantidad de lluvia y evaporación. La producción de vaina verde solo se evaluó en clima cálido en función del tipo de espaldera. El diseño experimental fue de bloques completos al azar con cuatro repeticiones. El ciclo del cultivo se acortó en 25 días en clima cálido (125... |
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Palavras-chave: Vigna unguiculata; Tipo de espaldera; Biofertilizantes; Rentabilidad económica; Trellises types; Biofertilizer; Economic analysis; Maestría; Botánica; Unidades de calor. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/217 |
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| Marouelli,Waldir A; Souza,Ronessa B; Braga,Marcos B; Silva,Washington LC. |
| We aimed to establish strategies for nitrogen (N) fertilization on drip-irrigated determinate-growth-habit tomato, under Cerrado conditions of Central Brazil. Three field experiments were carried out in a randomized block design. In experiment I six N doses (0, 80, 160, 240, 320 and 400 kg ha-1 N) were tested, in experiment II six combinations of the N forms (nitric; ammonium; amide; 2/3 nitric + 1/3 ammonium; 2/3 nitric + 1/3 amide; and 1/3 nitric + 2/3 amide) were evaluated, and in experiment III the combination of three soil pre-plant fertilization fractions (0, 20 and 40%) was evaluated with two splitting schemes of the remaining N via fertigation (linear and adjusted N-uptake curve). SPAD chlorophyll index and N content were measured in the leaves of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicon; Processing tomato; Determinate growth; Fertigation; Nutritional status; Economic analysis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000300327 |
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| Wamser,Anderson Fernando; Valmorbida,Janice; Suzuki,Atsuo; Hahn,Leandro; Mueller,Siegfried; Becker,Walter F; Feltrim,Anderson Luiz; Ender,Marcos M. |
| ABSTRACT We aimed to determine an adequate planting density and arrangement for the mechanized spraying of vertically staked tomatoes. Two experiments were carried out in the 2013/14 and 2014/15 harvests in the city of Calmon, state of Santa Catarina, Brazil, both in randomized block design. In 2013/14, treatments were arranged in a 4x2 factorial, corresponding to four planting densities (10,753, 12,903, 16,129 and 21,505 plants/ha) and two planting arrangements (single and double rows). In 2014/15, treatments were arranged in a 5x2 factorial, corresponding to five plant densities (the same planting densities of the previous harvest beyond 32,258 plants/ha) and the same planting arrangements. Total, marketable (considering extra AA and extra A fruits as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicon; Cropping system; Mechanization; Disease severity; Economic analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400519 |
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| SA, C. P. de; ANDRADE NETO, R. de C.; NEGREIROS, J. R. da S.; NASCIMENTO, G. C. do; NOGUEIRA, S. R.. |
| Este trabalho tem como objetivo avaliar o desempenho econômico do maracujazeiro BRS Gigante Amarelo, no Município de Senador Guiomard, AC, cujo sistema de produção utiliza um conjunto de recomendações técnicas sugeridas pela Embrapa, destacando-se calagem na cova, adubação de fundação e de manutenção, controle de pragas e doenças, além da polinização manual, poda de condução, tutoramento, irrigação localizada, desbrota e limpeza dos galhos velhos e improdutivos. |
| Tipo: Folhetos |
Palavras-chave: Maracujá amarelo; Maracuyá amarillo; Yellow passion fruit; BRS Gigante Amarelo; Senador Guiomard (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Granadillas; Insumos agrícolas; Passiflora edulis f flavicarpa; Costos de producción; Rendimiento de los cultivos; Análisis económico; Rendimento; Custo de produção; Análise econômica; Maracujá Peroba; Plantio; Passiflora edulis flavicarpa; Insumo; Crop yield; Farm inputs; Economic analysis; Production costs. |
| Ano: 2015 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1038324 |
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| FAMINOW, M. D.; OLIVEIRA, S. J. de M.; SA, C. P. de; VOSTI, S. A.; VALENTIM, J. F.. |
| Foi desenvolvido um modelo para analisar a produção leiteira da pequena propriedade da Amazônia Ocidental, seus aspectos financeiros abordando a propriedade rural como um todo. O investimento em um sistema melhorado, centrado na implantação de pastagem melhorada associada com leguminosa, pareceu ser um investimento adequado para pequenos produtores. Entretanto, o investimento criou um longo período inicial de fluxos negativos que têm que ser financiados de alguma maneira, através de reservas existentes na própria unidade de produção ou por fontes externas. E esta é, provavelmente, a maior restrição à adoção das tecnologias propostas. |
| Tipo: Folhetos |
Palavras-chave: Ouro Preto do Oeste (RO); Rondônia; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Gado Leiteiro; Produção Leiteira; Pequeno Produtor; Análise Econômica; Análise de Custo-Benefício; Dairy cattle; Cost benefit analysis; Economic analysis; Small-scale farming; Milk production. |
| Ano: 1997 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/703114 |
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| Registros recuperados: 184 | |
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