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| Registros recuperados: 31.147 | |
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| Oelofse, Myles; Høgh-Jensen, Henning; de Abreu, L.S.; de Almeira, G.F.; Hui, Q.Y.; de Neergaard, Andreas. |
| Increased demand for certified organic products has led to an increase in the number of certified organic farms in developing countries. Knowledge of farmer nutrient management practices on certified organic farms in developing countries is limited. Thus, the aim of this study was to investigate the impact of the adoption of certified organic agriculture on farm nutrient flows and nutrient budgets, and evaluate to which degree organic farms comply with organic principles relating to nutrient management. The study is based on five case studies of different types of certified organic farming systems in Brazil, Egypt and China. Farm nutrient flows and nutrient budgets for nitrogen, phosphorous and potassium were created for each farm. Four of the five... |
| Tipo: Journal paper |
Palavras-chave: Farm nutrient management. |
| Ano: 2010 |
URL: http://orgprints.org/18298/1/18298.pdf |
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| Morales Gutierrez, A. Carlos. |
| To ignore the historical perspective of socio-economical phenomena while looking ahead to the future in an attempt to raise expectations and set new challenges, can prove a risky move when approaching the cooperative movement as a whole. This is particularly so in the case of the European agricultural cooperatives. We expect them to play a relevant role in the overall panorama of a globalized world. The aim of this article is to trace the origins of the agricultural cooperative movement in seven European countries (Belgium, Denmark, France, Italy, The Netherlands, Portugal and the United Kingdom) and discuss the coincidences and differences which account for common problems with a view to avoiding them in future joint ventures. Some issues discussed here... |
| Tipo: Journal Article |
Palavras-chave: Economic history; History of micro enterprise; Cooperative enterprise; Agricultural markets; Agribusiness. |
| Ano: 2005 |
URL: http://purl.umn.edu/59711 |
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| Loomis, John B.; Bell, Paul; Cooney, Helen; Asmus, Cheryl. |
| We estimate adults’ willingness to pay (WTP) to reduce health risks to their own or other families’ infants to test for altruism. A conjoint analysis of adults paying for bottled water found marginal WTP for reduction in risk of shock, brain damage, and mortality in the cash treatment of $2, $3.70, and $9.43, respectively. In the hypothetical market these amounts were $14, $26, and $66, indicating substantial hypothetical bias, although not unexpected due to the topic of infant health. Statistical tests confirm a high degree of altruism in our WTP results, and altruism held even when real money was involved. |
| Tipo: Journal Article |
Palavras-chave: Altruism; Conjoint; Drinking water; Nitrates; Validity; Willingness to pay; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; Institutional and Behavioral Economics; I10; Q53. |
| Ano: 2009 |
URL: http://purl.umn.edu/56657 |
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| Argiles, Josep M.; Brown, Nestor Duch. |
| While conventional farming systems face serious problems of sustainability, organic agriculture is seen as a more environmentally friendly system since it favours renewable resources, recycles nutrients, uses the environment’s own systems for controlling pests and diseases, sustains ecosystems, protects soils, and reduces pollution. At the same time organic farming promotes animal welfare, the use of natural foodstuffs, product diversity and the avoidance of waste, among other practices. However, the future of organic agriculture will depend on its economic viability and on the determination shown by governments to protect these practices. This paper performs panel regressions with a sample of Catalan farms (Spain) to test the influence of organic farming... |
| Tipo: Article |
Palavras-chave: Organic farming; Conventional farming; Social/environmental/financial performance; Social and environmental accounting; Agribusiness; Environmental Economics and Policy; Farm Management; Q01; Q12; Q51; M41. |
| Ano: 2011 |
URL: http://purl.umn.edu/118577 |
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| Begum,Tamina; Dasgupta,Tapash. |
| Three sesame genotypes (Rama, SI 1666 and IC 21706) were treated with physical (γ-rays: 200 Gy, 400 Gy or 600 Gy) or chemical (ethyl methane sulphonate, EMS: 0.5%, 1.0%, 1.5% or 2.0%) mutagens and their mutagenic effectiveness and efficiency were estimated in the M2 generation. The M3 generation was used to identify the most effective mutagen and dose for induction of mutations. The average effectiveness of EMS was much higher than γ-rays. The lowest dose of γ-rays (200 Gy) and the lowest concentration of EMS (0.5%) showed the highest mutagenic efficiency in all genotypes. Analysis of the M3 generation data based on parameters such as the variance ratio and the difference in residual variances derived from the model of Montalván and Ando indicated that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Effectiveness; Efficiency; Mutagens; Quantitative characters; Sesame. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400025 |
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| Institute for Environment and Sustainability (Joint Research Centre). |
| Chemical risk assessment always entails an evaluation of expected environmental concentrations of substances; these concentrations may be predicted using mathematical models or may be chosen on the basis of experimental observations and monitoring activities. The work discusses the usefulness and limitations in building compilations of published monitoring data by describing a feasibility study on polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-pdioxins and dibenzofurans (PCDD/Fs), for which observed concentration data were retrieved from scientific journal articles published between 2000 and 2009. These chemicals are typical POPs and are of constantly high concern for their potential adverse effects on human health and ecosystems. PCBs were... |
| Tipo: Text |
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| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00653/76494/77583.pdf |
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| Fornazier, Armando; Pedrozo, Eugenio Avila. |
| A produção de produtos denominados orgânicos ou ecológicos tem sido uma realidade, porém, no processo de comercialização muitas vezes não se consegue caracterizar todos os atributos do produto. O objetivo deste trabalho foi de avaliar a percepção dos agentes envolvidos na produção e comercialização de produtos oriundos da agricultura ecológica comercializados numa feira de produtos ecológicos de Porto Alegre, estado do Rio Grande do Sul, avaliando o processo através de alguns aspectos da Economia dos Custos de Transação (ECT). Dessa forma, busca-se descrever como a confiança entre os membros permite o desenvolvimento de uma relação de afirmação na garantia de uma dada característica do produto. O estudo do caso mostrou ter relações de confiança entre os... |
| Tipo: Journal paper |
Palavras-chave: Farm economics; Farming Systems; Social aspects. |
| Ano: 2010 |
URL: http://orgprints.org/25013/1/Fornazier_Confian%C3%A7a.pdf |
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| Campos, Jurema Iara; Valente, Ana Lúcia Eduardo Farah. |
| Este estudo apresenta os principais resultados da análise de como habitantes de Alto Paraíso de Goiás estão buscando alternativas para o desenvolvimento sustentável do município, por meio da implantação, pela Embrapa, de projeto relativo ao resgate do café. A mineração e as atividades agropecuárias foram exercidas na região até os anos 60, quando a atividade principal passou a ser o turismo, a partir da criação do Parque Nacional da Chapada dos Veadeiros e da inauguração de Brasília. Em 2000, o fluxo de turistas decaiu devido a problemas relativos à saúde pública, acarretando estagnação da economia local. Nos últimos anos, produtores familiares despertaram para a existência, ali, de um café que pode ser comercializado em nichos de mercado de grãos... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Markets and trade. |
| Ano: 2010 |
URL: http://orgprints.org/22600/1/Campos_Constru%C3%A7%C3%A3o.pdf |
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| Registros recuperados: 31.147 | |
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