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| Registros recuperados: 12 | |
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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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| Oelofse, Myles; Høgh-Jensen, Henning; Abreu, L.S.; Almeida, Gustavo Fonseca de; Hui, Qiao Yu; Sultan, Tursinbek; de Neergaard, Andreas. |
| Based on three case studies in China and Brazil, this paper explores the terms of access for farmers' participation in certified organic agriculture (OA) and investigates the influence of adoption on productivity, nutrient budgets, income and labour use. Small-scale farmers converting to OA require substantial external production-related, marketing and certification support. Access to OA was strongly dependent upon the type of support available to farmers. Organization based on a contract-farming model resulted in OA only being an option available to a narrow group of farmers, whilst OA initiated by a farmer cooperative provided better access. Gross output was significantly higher for oranges, whilst for the other crops gross output was similar. However,... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Quality and evaluation of inputs. |
| Ano: 2010 |
URL: http://orgprints.org/18301/1/Oelofse_et_al_Ecological_Economics_2010_In_press.pdf |
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| Lassen, Jesper; Oelofse, Myles. |
| To avoid the risks of conventionalisation and becoming a modified version of conventional farming, organic farming is under a continuous pressure to reinvent itself by adopting new technologies. This article examines the role of precaution in organic farmers’ assessment of potential new technologies, and how farmer’s assessment draws on different types of knowledge. The article further explores how knowledge type compares to the role of knowledge and precaution set forth in the principles of organic farming by the organic movement (IFOAM). Results from a case study of the introduction of sewage sludge as an alternative – and controversial - source of nutrients in organic agriculture are presented. Empirically, this case study builds on the analysis of five... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Knowledge management. |
| Ano: 2015 |
URL: http://orgprints.org/28537/1/Knowledge%20and%20precaution_FINAL.pdf |
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| Lassen, Jesper; Oelofse, Myles. |
| Organic farming is under constant pressure to reinvent itself by adopting new technologies. This article examines the role of precaution in organic farmers’ assessments of new technologies, and asks how their assessments draw on different types of knowledge. The article further explores how knowledge type compares to the role of knowledge and precaution expressed in the principles of organic farming as defined by the organic movement organisation, IFOAM. Results from a study of the introduction of sewage sludge as an alternative source of nutrients in organic agriculture are presented. Empirically, this case-study builds on the analysis of five focus groups made up of Danish organic farmers. While some farmers called for precaution, supporting this with... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Knowledge management. |
| Ano: 2018 |
URL: http://orgprints.org/31293/7/2016%20Knowledge%20and%20Precaution%20%28SORU%29.pdf |
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| Høgh-Jensen, Henning; Oelofse, Myles; Egelyng, Henrik. |
| The need for enhancing food production and availability in underprivileged regions of the world requires the attention of scientists. This paper explores the possibilities for rethinking Agricultural Research for Development (AR4D) in the light of new challenges characterized by a high degree of scientific uncertainty and associated with intense political differences of interest. New challenges that particularly influence food production in underprivileged regions include global climate change, globalisation of food chains, and emerging low-carbon energy systems. We argue that by applying the people-centred Sustainable Livelihoods Approach as a research paradigm in AR4D, researchers may be more successful in producing knowledge that is useful to... |
| Tipo: Journal paper |
Palavras-chave: Community development; "Organics" in general; Research methodology and philosophy. |
| Ano: 2010 |
URL: http://orgprints.org/18300/1/18300.pdf |
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| Oelofse, Myles; Høgh-Jensen, Henning; Abreu, Lucimar Santiago de; Almeida, Gustavo Fonseca de; El-Araby, Ahmed; Hui, Qiao Yu; Sultan, Tursinbek; de Neergaard, Andreas. |
| Certified organic agriculture stipulates a range of principles and standards, which govern farmer practices. The recent global expansion of organic agriculture has raised new challenges for organic agriculture, particularly whether management practices in organic farms are subject to the forces of conventionalisation. We studied changes in agroecological practices in certified organic farms in China,Brazil and Egypt. The study takes departure in the conventionalisation hypothesis and the analysis is framed using organic and agroecological principles. The study focuses on agroecological design principles, inherent to organic agriculture, of diversity in crop production, pest, disease and weed management, and soil fertility management. The research design... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Systems research and participatory research; Food systems; Policy environments and social economy; Research methodology and philosophy; Knowledge management. |
| Ano: 2011 |
URL: http://orgprints.org/23292/7/23292.pdf |
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| Oelofse, Myles; Hegh-Jensen, Henning; Abreu, Lucimar Santiago de; Almeida, Gustavo F.; El-Araby, Ahmed; Yu Hui, Qiao; Sultan, Tursinbek; Neergaard, Andreas de. |
| Certified organic agriculture stipulates a range of principles and standards, which govern farmer practices. The recent global expansion of organic agriculture has raised new challenges for organic agriculture, particularly whether management practices in organic farms are subject to the forces of conventionalisation. We studied changes in agroecological practices in certified organic farms in China, Brazil and Egypt. The study takes departure in the conventionalisation hypothesis and the analysis is framed using organic and agroecological principles. The study focuses on agroecological design principles, inherent to organic agriculture, of diversity in crop production, pest, disease and weed management, and soil fertility management. The research design... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Farm economics. |
| Ano: 2011 |
URL: http://orgprints.org/22760/1/Organic%20farm%20%20conventionalissation%20and%20farmer%20pratices%20in%20China%2C%20Brasil%20and%20Egypt.pdf |
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| Oelofse, Myles; Jensen, Lars Stoumann; Magid, Jakob. |
| Soil fertility management in organic sys- tems, regulated by the organic standards, should seek to build healthy, fertile soils and reduce reliance on external inputs. The use of nutrients from conventional sources, such as animal manures from conventional farms, is currently permitted, with restrictions, in the organic regulations. However, the reliance of organic agriculture on the conventional system is considered problematic. In light of this, the organic sector in Denmark has recently decided to gradually phase out, and ultimately ban, the use of conventional ma- nures and straws in organic agriculture in Denmark. Core focal areas for phasing out conventional nutrients are as follows: (1) amendments to crop selection and rotations, (2) alternative... |
| Tipo: Journal paper |
Palavras-chave: Soil quality Recycling; Balancing and resource management Nutrient turnover Farm nutrient management History of organics. |
| Ano: 2013 |
URL: http://orgprints.org/27911/1/Myles%20Phasing%20out%20implications%20personal%20copy%202013.pdf |
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| Oelofse, Myles; Jensen, Lars Stoumann; Magid, Jakob. |
| Soil fertility management in organic systems, regulated by the organic standards, should seek to build healthy, fertile soils and reduce reliance on external inputs. The use of nutrients from conventional sources, such as animal manures from conventional farms, is currently permitted, with restrictions, in the organic regulations. However, the reliance of organic agriculture on the conventional system is considered problematic. In light of this, the organic sector in Denmark has recently decided to phase out, and ultimately ban, the use of conventional manures and straws in organic agriculture in Denmark by 2021. Core focal areas for phasing out conventional nutrients are 1) amendments to crop selection and rotations, 2) alternative nutrient sources... |
| Tipo: Journal paper |
Palavras-chave: Soil quality Composting and manuring Recycling; Balancing and resource management Nutrient turnover Farm nutrient management Quality and evaluation of inputs. |
| Ano: 2011 |
URL: http://orgprints.org/19839/3/19839.pdf |
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| Oelofse, Myles; Jensen, L.S.; Magid, Jakob. |
| Soil fertility management in organic systems, regulated by the organic standards, should seek to build healthy, fertile soils and reduce reliance on external inputs. The use of nutrients from conventional sources, such as animal manures from conventional farms, is currently permitted, with restrictions, in the organic regulations. However, the reliance of organic agriculture on the conventional system is considered problematic. In light of this, the organic sector in Denmark has recently decided to gradually phase out, and ultimately ban, the use of conventional manures and straws in organic agriculture in Denmark. Core focal areas for phasing out conventional nutrients are as follows: (1) amendments to crop selection and rotations, (2) alternative... |
| Tipo: Journal paper |
Palavras-chave: Soil quality Nutrient turnover Soil Values; Standards and certification Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/24655/1/Oelofse_et_al_Journal%20of%20Organic%20Agriculture.pdf |
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| Registros recuperados: 12 | |
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