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A Life-Cycle Perspective on Governing Cooperative Enterprises in Agriculture AgEcon
Hueth, Brent; Reynolds, Anne.
Tipo: Journal Article Palavras-chave: Cooperatives; Governance; Life Cycle; Competition; Finance; Agribusiness; Q12; Q13; Q14.
Ano: 2011 URL: http://purl.umn.edu/117411
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A PRECARIEDADE DO TRANSPORTE RODOVIÁRIO BRASILEIRO PARA O ESCOAMENTO DA PRODUÇÃO DE SOJA DO CENTRO-OESTE: SITUAÇÃO E PERSPECTIVAS AgEcon
Capacle, Vivian Helena; Ramos, Pedro.
A região Centro-Oeste do país se destaca como um pólo produtor de soja e essa produção é escoada, em sua maioria, por meio de rodovias. Pela crise fiscal do Estado, a partir dos anos 80, a malha rodoviária brasileira perde participação nos recursos públicos para investimentos em sua ampliação, conservação e restauração e, essa escassez de investimentos nas rodovias tem reflexos sobre a competitividade internacional da soja dos cerrados, uma vez que o principal modal utilizado para o escoamento dessa produção para os portos das Regiões Sul e Sudeste é o modal rodoviário cujas vias estão em estado precário de conservação, com destaque para trechos das rodovias BR 163 e BR 364 que são vias importantes na região do Centro-Oeste. Por conta disso, 25% da receita...
Tipo: Conference Paper or Presentation Palavras-chave: Infra-Estrutura de Transportes; Rodovias; Soja; Competitividade; Transportation Infrastructure; Roads; Soy Bean; Competition; Agribusiness.
Ano: 2008 URL: http://purl.umn.edu/109376
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Adaptive value of ryegrass biotypes with low-level resistance and susceptible to the herbicide fluazifop and competitive ability with the wheat culture Planta Daninha
Fraga,D.S.; Agostinetto,D.; Vargas,L.; Nohatto,M.A.; Thürmer,L.; Holz,M.T..
Ryegrass is the main weed in wheat crop, causing yield loss due to competition by environmental resources. The objectives of this study were to estimate the fitness cost of ryegrass biotypes with low-level resistance and susceptible to fluazifop and to investigate the relative competitive ability of these biotypes between themselves and against the crop. Thus, fitness cost and competitive ability experiments were conducted under greenhouse conditions. For the fitness cost experiments, the low-level resistant ryegrass biotypes and those susceptible to fluazifop were used. For competitive ability, the treatments were arranged in a replacement series, with five proportions of the wheat cultivar FUNDACEP Horizonte and the low-level resistant and susceptible...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Weed; Competition; Lolium multiflorum.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400014
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Adsorption of Cd, Cu, Ni and Zn in tropical soils under competitive and non-competitive systems Scientia Agricola
Moreira,Cindy Silva; Alleoni,Luís Reynaldo Ferracciú.
The adsorption of heavy metals in soils affects their behavior in the environment and their bioavailability to plants. The knowledge of the adsorption mechanisms in competitive systems allows a more realistic evaluation of the metals' behavior in the soil than the single metal adsorption. The objectives of this study were (i) to evaluate Cd, Cu, Ni, and Zn adsorption in 14 surface samples (0-0.2 m) of representative soils of the Brazilian humid-tropical region, in competitive and non-competitive systems, and (ii) to establish metal affinity sequences for each soil, based in the maximum adsorption capacity (MAC) estimated by the Langmuir model. The Rhodic Eutrudox, the Kandiudalf Eutrudox, the Arenic Hapludalf, the Arenic Hapludult and the Typic Argiudoll...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metals; Competition; Tropical soil.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000300008
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Advertisement call of Dendropsophus microps (Anura: Hylidae) from two populations from southeastern Brazil Rev. Bras. Zool.
Forti,Lucas Rodriguez; Márquez,Rafael; Bertoluci,Jaime.
In anurans, acoustic communication is a major mechanism of pre-zygotic isolation, since it carries information about species recognition. Detailed descriptions of the acoustic properties of anuran advertisement calls provide important data to taxonomist and to the understanding of the evolution of the group. Herein we re-describe the advertisement call of the hylid frog Dendropsophus microps (Peters, 1872) after analyzing a larger sample than that of previous descriptions. We also compare the acoustic properties of the call in two populations and discuss the effect of the presence of the sister species, Dendropsophus giesleri (Mertens, 1950), a potential competitor, in one of the populations. Additionally, we provide information on calling sites and size...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic traits; Amphibia; Bioacoustics; Call evolution; Competition.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300187
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Alexandrium minutum growth controlled by phosphorus An applied model ArchiMer
Chapelle, Annie; Labry, Claire; Sourisseau, Marc; Lebreton, Carole; Youenou, Agnes; Crassous, Marie-pierre.
Toxic algae are a worldwide problem threatening aquaculture public health and tourism Alexandrium a toxic dinoflagellate proliferates in Northwest France estuaries (i e the Penze estuary) causing Paralytic Shellfish Poisoning events Vegetative growth and in particular the role of nutrient uptake and growth rate are crucial parameters to understand toxic blooms With the goal of modelling in situ Alexandrium blooms related to environmental parameters we first try to calibrate a zero-dimensional box model of Alexandrium growth This work focuses on phosphorus nutrition Our objective is to calibrate Alexandrium minutum as well as Heterocapsa triquetra (a non-toxic dinoflagellate) growth under different rates of phosphorus supply other factors being optimal and...
Tipo: Text Palavras-chave: Toxic algal blooms; Alexandrium; Phosphorus uptake; Models; Competition; Northwest France.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00018/12901/9905.pdf
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Allelopathic research in Brazil Acta Botanica
Reigosa,Manuel; Gomes,Anabele Stefânia; Ferreira,Alfredo Gui; Borghetti,Fabian.
In this article, we review allelopathy studies conducted in Brazil or involving plant species that occur in the country. Conceptions and misconceptions associated with allelopathy, as well as some international criteria to be applied in allelopathic research, are presented and discussed. We observed a sharp increase in the number of papers on this subject conducted in Brazil between 1991 and 2010. However, most studies are conducted under laboratory conditions, lack a clear hypothesis or a solid justification, and typically make use of target species that do not co-exist with the donor species under natural conditions. We also found that most studies do not take the additional steps in order to purify and identify the bioactive molecules. We recommend that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allelopathy; Allelochemicals; Competition; Interference; Phytotoxicity; Weed control.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400001
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Análisis de la red de valor del mango Ataulfo en la subcuenca del Río Atoyac, estado de Guerrero. Colegio de Postgraduados
Embris Jiménez, Omar.
El presente trabajo tuvo como objetivo definir las causas que existen en torno al problema de la red de valor del mango Ataulfo en la subcuenca de Atoyac, así como identificar las alternativas de aprovechamiento de las ventajas competitivas propias del territorio y del potencial productivo que permitan generar ingresos a la población. Aunque el mango Ataulfo es líder en rendimiento y representa los mayores ingresos para los productores, presenta bajo nivel competitivo, debido a: altos costos de producción y postcosecha, baja calidad del producto, deficiente organización, escasez de capital de trabajo, escasez de asistencia técnica y capacitación, y poco vínculo entre los agentes: productor, empacador y cliente. Para revertir este fenómeno, es necesario que...
Palavras-chave: Comercialización; Competitividad; Mango ataulfo; Red de valor; Ataulfo mango; Competition; Marketing; Value network; EDAR; Desarrollo Sostenible de Zonas Indígenas; Maestría Tecnológica.
Ano: 2011 URL: http://hdl.handle.net/10521/654
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Analogous Products and Food Quality Products: Two Poles of the Competition AgEcon
Bošková, Iveta.
The globalisation of processing industry and the consolidation of the international retail trade, together with the increase of imports after the EU access, supported the competition hot up and saturation of domestic food market. Both food processors and food retailers are exposed to increasing competition. In order to maintenance on the market they are increasingly pressed to minimize their costs and/or to accomplish higher prices for products with competitive advantage. Besides of that all participants of the agri-food chain are pressed to intensify marketing support of their goods. Aiming to reduce the costs, some of processors choose the way by the substitution of part of the input material by another, cheaper one. On the other hand, the offer of...
Tipo: Conference Paper or Presentation Palavras-chave: Competition; Marketing; Quality; Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2007 URL: http://purl.umn.edu/7880
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Antidumping and Market Power in the Agriculture Sector, with a Special Case Study of the Fresh Tomato Industry AgEcon
Baylis, Katherine R..
In this article we highlight the anticompetitive nature of antidumping (AD) legislation. Antidumping legislation was set up to protect domestic firms from predatory pricing by foreign firms. We argue that protecting highly concentrated industries drastically reduces competition at home. In cases where the industry consists only of one or two firms, import restriction may breed monopolies at the expense of domestic consumers. This article looks at cases filed by the agriculture sector, and at the market concentration of industries in this sector, to illustrate the above possibility. We study the case of fresh tomatoes in detail to further demonstrate the anticompetitive nature of AD legislation. We show the effect of AD legislation on imports, as well as...
Tipo: Journal Article Palavras-chave: Agriculture; Antidumping legislation; Competition; Fresh tomato industry; Crop Production/Industries; International Relations/Trade.
Ano: 2008 URL: http://purl.umn.edu/6320
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Article 82 EC – The Problems and The Solution AgEcon
Lang, John T..
The Commission's Guidance paper on exclusionary abuse under Article 82 EC is open to three fundamental criticisms. First, it leads to less legal certainty, because the rules suggested are vague and imprecise, because dominant companies will not have the information needed to apply them, and because the Commission is trying to change the law, which it has no power to do. Second, it would lead to some anticompetitive effects, because in practice it discourages price competition, by discouraging individualised price negotiations and retroactive rebates, and by suggesting that the Commission will protect not-yet-as-efficient competitors from price competition. Third, it leads to too many "false positives", i.e., findings of exclusionary abuse that are not...
Tipo: Working or Discussion Paper Palavras-chave: Article 82EC; Competition; Abuse; Institutional and Behavioral Economics; K21.
Ano: 2009 URL: http://purl.umn.edu/54282
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Aspectos da competicao entre plantas com especial atencao ao algodoeiro-Gossypium hirsutum L. Infoteca-e
BELTRÃO, N. E. de M..
A competicao e suas modalidades; Informes da pesquisa sobre competicao na cultura algodoeira no centro-sul do Brasil e no mundo; Informes da pesquisa sobre competicao na cultura algodoeira no nordeste brasileiro.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Algodao herbaceo; Arboreo; Erva daninha; Competicao; Gossypium hirsutum L; Brasil; Nordeste; Weed; Competition; Perennial cotton; Annual cotton.
Ano: 1977 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/262412
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Assembly rules in Muscid Fly assemblages in the grasslands Biome of Southern Brazil Neotropical Entomology
Krüger,Rodrigo F; Carvalho,Claudio J B de; Ribeiro,Paulo B.
The distribution of muscid species (Diptera) in grasslands fragments of southern Brazil was assessed using null models according to three assembly rules: (a) negatively-associated distributions; (b) guild proportionality; and (c) constant body-size ratios. We built presence/absence matrices and calculated the C-score index to test negatively-associated distributions and guild proportionality based on the following algorithms: total number of fixed lines (F L), total number of fi xed columns (F C), and the effect of the average size of the populations along lines (W) for 5000 randomizations. We used null models to generate random communities that were not structured by competition and evaluated the patterns generated using three models: general, trophic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Community; Competition; Diptera; Muscidae; Niche theory; Null model.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300006
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Assessing Competition in the U.S. Beef Packing Industry AgEcon
Ward, Clement E..
Tipo: Journal Article Palavras-chave: Beef; Cattle; Competition; Concentration; Market structure; Meatpacking; Pricing; Agribusiness; Livestock Production/Industries; L13; Q13.
Ano: 2010 URL: http://purl.umn.edu/94758
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Assessing Oligopoly and Oligopsony Power in the U.S. Catfish Industry AgEcon
Bouras, David; Engle, Carole R..
This paper addresses the issue of competition in the U.S. catfish industry. To this end, a conjectural variation oligopolistic model was developed. The model was estimated econometrically using the Generalized Method of Moments (GMM) procedure. Chi-square analysis implied that catfish processors do not exert market power over farmers or over consumers. The conjectural elasticity was estimated to be 0.073, the oligopoly power index 0.28, and the oligopsony power index 0.68, and none of these values were statistically significant. The results support competitive behavior of the catfish processing sector.
Tipo: Journal Article Palavras-chave: Competition; Conjectural variation model; U.S. catfish industry; Agribusiness; Livestock Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/62284
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Assessing the Competitive Ability of Rhynchosia capitata; an Emerging Summer Weed in Asia Planta Daninha
Ali,H.H.; Tanveer,A.; Naeem,M.; Jamil,M.; Iqbal,M.; Chadhar,A.R.; Kashif,M.S..
Rhynchosia capitata is a newly emerging threatening weed of summer crops in many Asian countries. We conducted 2-yr experiments to evaluate R. capitata competition with mungbean under irrigated conditions. Rhynchosia capitata was allowed to compete with mungbean for 0, 3, 4, 5, 6, 7 weeks after planting and for full crop season. The competitive ability of R. capitata was assessed by measuring its dry weight, micro and macro nutrient contents and uptake; and its effects on mungbean growth and yield parameters. The results showed that full season weed competition produced highest dry weight of R. capitata and its macro and micronutrient contents and uptake. Yield and yield components of mungbean decreased in a linear fashion with increase in competition...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhynchosia capitata; Emerging; Infestation; Competition; Mungbean; Nutrients.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200175
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Assessing the Competitive Interaction Between Private Labels and National Brands AgEcon
Cotterill, Ronald W.; Putsis, William P., Jr.; Dhar, Ravi.
In contrast to single-equation cross-sectional studies of private label share, developing a complete understanding of the nature of the competitive interaction between national brands and private labels requires an understanding of the determinants of both demand and strategic pricing decisions by firms. Consequently, we estimate a simultaneous system of share and price for private labels and national brands. From the empirical results, two measures of market response are derived. The unilateral demand elasticity measures the pure “own” demand response, while the residual (or “total”) elasticity also captures the impact of competitive price reaction (Baker and Bresnahan 1985). When taken together, these provide important strategic insights into the pricing...
Tipo: Working or Discussion Paper Palavras-chave: Competition; Competitive strategy; Private labels; Pricing; Demand and Price Analysis.
Ano: 1999 URL: http://purl.umn.edu/25177
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Avaliação de cultivares de caupi para o consórcio com algodoeiro herbáceo. Repositório Alice
BELTRAO, N. E. de M.; SANTANA, J. C. F. de; CRISOSTOMO, J. R.; ARAUJO, J. P. P. de; SOUSA, R. P. de..
Visando a avaliação de cultivares de caupi (Vigna unguiculata (L.) Walp.) com relação as características de produção, qualidade de grão e força de competição no consorciamento com o algodoeiro herbáceo (Gossypium hirsutum L., r. latifolium Hutch.), um experimento foi realizado no município de Gurinhem, Paraíba, em 1983. Testaram-se doze cultivares de caupi de hábitos de crescimento e ciclos diferentes, numa modalidade de consorcio em que se utilizaram fileiras duplas da leguminosa, espaçadas entre si de 0,30 cm e distanciadas das fileiras de algodão herbáceo de 0,35 cm, com uma densidade de cinco plantas por metro de fileira, objetivando maior pressão de competição do caupi sobre a malvacea. O algodão foi plantado no espaçamento de 1,0 m x 0,2m. Apenas...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Gossypium hirsutum; Vigna unguiculata; Qualidade de fibra; Competicao; Lint quality; Competition.
Ano: 1986 URL: http://www.alice.cnptia.embrapa.br/handle/doc/953863
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Avaliacao de germoplasma de batata doce Ipomoea batatas (L.) Lam. visando resistencia a insetos de solo. Repositório Alice
FRANÇA, F. H.; MIRANDA, J. E. C.; FERREIRA, P. E.; MALUF, W. R.; BARBOSA, S..
bitstream/item/191691/1/digitalizar0144.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Batata-doce; Brasilia; Distrito Federal; Brasil; Resistance; Pest insects; Competition; Cerrado; Competição de Variedade; Germoplasma; Inseto; Ipomoea Batatas; Praga; Raiz; Resistência; Solo; Brazil; Germplasm; Roots; Soil; Sweet potatoes; Varieties.
Ano: 1983 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/765515
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Avaliacao de germoplasma de batata (Solanum tuberosum L.) quanto a susceptibilidade ao ataque de Liriomyza huidobrensis Blanchard. Repositório Alice
BARBOSA, S.; FRANCA, F. H.; PUENTE CUIDAD, F. de la..
bitstream/item/191703/1/digitalizar0142.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Brasilia; Distrito Federal; Brasil; Pest insects; Leaf miner; Competition; Batata; Cerrado; Competição de Variedade; Germoplasma; Inseto; Larva Minadora; Liriomyza Huidobrensis; Praga; Solanum Tuberosum; Brazil; Germplasm; Potatoes; Varieties.
Ano: 1983 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/765513
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