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| Registros recuperados: 8.082 | |
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| Brock, Christopher; Hoyer, Uta; Leithold, Günther; Hülsbergen, Kurt-Jürgen. |
| Humus balances provide a profitable approach for humus dynamics assessment in farming practice. Nevertheless, there is a clear demand for methodological adaptation. This article presents a new approach to humus balancing using reproducible algorithms for the estimation of balance coefficients. Humus balance coefficients for crops and organic fertilizers are estimated according to a bipartite algorithm. Humus demand is calculated on the basis of crop yields referring to the nitrogen household in the plant-soil system. Humus supply is derived from organic matter input with plant material and fertilizers. The new approach facilitates the adaptation of the method to new situations. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality. |
| Ano: 2008 |
URL: http://orgprints.org/12077/1/Brock_12077_ed.doc |
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| Vedie, Hélène; Berry, Dominique; Leclerc, Blaise; Grébert, David; Lhôte, Jean-Michel. |
| The effect of controlled traffic with permanent crop beds was compared to mouldboard ploughing in France for organic vegetable production. Four trials were carried out over a period of three to seven years at four sites with different pedo-climatic conditions. Variable results were obtained, depending on soil type (susceptibility to compaction), tillage machinery type, vegetable type (root or not, grown from seed or transplant) and weed development. However, permanent crop beds with controlled traffic generally improved biological activity and reduced labour demand. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality. |
| Ano: 2008 |
URL: http://orgprints.org/11824/1/Vedie_11824_ed.rtf |
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| Cheng, Hongyuan; Friis, Alan. |
| A new engineering method is proposed to understand extrudate expansion and extrusion operation parameters for starch based food extrusion cooking process through dimensional analysis principle, i.e. Buckingham pi theorem. Three dimensionless groups, i.e. pump efficiency, water content and temperature, are suggested to describe the extrudate expansion. Using the three dimensionless groups, an equation is derived to express the extrudate expansion. The model has been used to correlate the experimental data for whole wheat flour and fish feed extrusion cooking. The average deviations of the correlation are respectively 5.9% and 9% for the whole wheat flour and the fish feed extrusion. An alternative 4-coefficient equation is also suggested from the 3... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Knowledge management. |
| Ano: 2009 |
URL: http://orgprints.org/16126/2/16126.pdf |
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| Frost, David; Wacher, Carolyn. |
| Although there is a widespread assumption that organic farming developed in response to the intensification of agriculture in the second half of the twentieth century, a number of scholars have sought to show that the origins of the movement date to the 1920s and 1930s. They argue that that there is continuity in the development of the organic movement and that the ideals and values of the early organicists are the origin of current organic farming discourse. A detailed history of the organic movement indicates however, that a number of social movements converged to contribute to its development. Particular cultural and socio- demographic changes in the last three decades of the twentieth century produced a new ex-urban organic movement with a new organic... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; History of organics. |
| Ano: 2004 |
URL: http://orgprints.org/24831/1/ORra623%20A%20New%20Incarnation.pdf |
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| Borsari, Bruno; Onwueme, Inno. |
| The prairie ecosystem that occupied most of the North American continent has been mostly converted into agricultural farmland. The looming global scarcity of fossil fuels has spurred interest in producing ethanol from corn (Zea mays) but legitimate objections remain to the idea of supporting this vision. The purpose of this study was to initiate a prairie restoration on marginal soil of a 16.2 ha. farm in southeastern Minnesota and to determine which restoration procedure (only native grass species versus a mixture of grasses and forbes) was most effective for the establishment of prairie on the land that may yield biomass for biofuels. We planted 11.4Kg./ha. of grasses on 4.7 ha. and 0.70Kg./ha. of forbs on 3.2 ha., in June 2007. An evaluation of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2008 |
URL: http://orgprints.org/11300/1/Borsari_11300_ed.doc |
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| Trapman, Marc. |
| Conclusions (1) What can be solved: - Possibly quicker - More transparent, technical and objective evaluation that allows for development What can not be solved: - Differences between countries due to lack of active policy for local registration of Organic Inputs Conclusions (2) What should be considered System effects in: - “domino” effects in the use of other PPP” - substitution of PPP’s - preventing resistance - moving organic production to geographical areas where more Inputs are allowed Conclusions (3) A transparent, technical and system-based evaluation of input materials, aimed at further and equal development of organic agriculture in all EU member states would be highly welcome! |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Quality and evaluation of inputs. |
| Ano: 2005 |
URL: http://orgprints.org/6088/1/trapman_2005_Practitioners_view.pdf |
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| Clarke, Dr Sarah M.; Hinchsliffe, Miss Kay E.; Haigh, Miss Zoe; Jones, Dr Hannah; Pearce, Dr Bruce; Wolfe, Prof Martin S; Thomas, Dr Jane. |
| A participatory research methodology was used to compare the performance of UK wheat varieties under organic conditions. Plots of three breadmaking winter wheat varieties (Hereward, Solstice and Xi19) and a mixture (1:1:1) of the varieties were grown at 19 UK farms in two seasons (2003/04 and 2004/05). Meas-urements were taken of growth habit, yield and grain quality. Grain yields in both seasons showed significant site by variety interactions, although the variation among sites was greater than among varieties in both instances. Wheat grown at Western sites was significantly shorter and higher-yielding than that grown at Eastern sites in 2003/04 but significantly taller in 2004/05. As with grain yield, greater variation among site than variety was found... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Cereals; Pulses and oilseeds Crop husbandry. |
| Ano: 2006 |
URL: http://orgprints.org/7444/1/denmark_congress_agronomic_PC_paper.pdf |
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| Jones, Dr H.; Hinchsliffe, Miss K.; Clarke, Dr S M; Pearce, Dr B; Gibbon, Dr D; Lyon, Dr F; Harris, Dr F; Thomas, Dr J; Wolfe, Prof M S. |
| Farmer participation was essential in developing a uniquely useful set of wheat variety trials data on a wide range of organic farms over two years. Although the trials were successful, it became clear that some of the participating farmers felt there were some limitations in the process. These included a lack of ownership in the project and a concern for more researcher help. It was clear that a greater time in-vestment was needed at the start of the project to help with farmer understanding and ownership. De-spite the negative comments, farmers appreciated their involvement, particularly in contrasting their own views and information with that from the wider scene. Farmer participation is essential for systems-level research and this project helped to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Research methodology and philosophy "Organics" in general Systems research and participatory research Education; Extension and communication Technology transfer. |
| Ano: 2006 |
URL: http://orgprints.org/7447/1/denmark_congress_06_PC_social_paper.pdf |
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| Zhang, Fusuo; Qiao, Yuhui; Wang, Fanghao; Zhang, Weifeng. |
| With the rapid development of international production and trade in organic food, organic agriculture is also boosting in China. The milestone of Chinese organic agri-culture was set in 1990 with the first export of a certified organic product (tea) from Lin’an county of Zhejiang Province, China, which marked the launch of organic pro-duction in China. By the end of 2005, there had been about 4.384 million ha organic land, including 1.694 million ha organic, 0.61 million ha conversion as well as 2.08 million ha collection area, about half of which is certified area. About 4.93 million tons organic products and nearly 1600 projects had been certified with 300~400 varieties. According to the above data, now China ranks the 3rd largest country of organic... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: China. |
| Ano: 2007 |
URL: http://orgprints.org/10388/1/10388_Zhang_Vortrag.pdf |
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| Chen, Yung-Song; Liao, I Chiu. |
| The study was conducted to evaluate the applicability of producing organic shrimp without using any chemicals in Ilan, Taiwan. The trials respectively employed intensive monoculture of two penaeoid species, white shrimp (Litopenaeus vannamei ) and kuruma prawn (Marsupenaeus japonicus) and extensive polyculture of kuruma prawn (0.56 m-2 stocking density) and grey mullets (500 pcs). Experimental units consisted of three earthen ponds, 900 m2 , 1100 m2 and 4600 m2, respectively with a minimal water exchange. No significant effects in shrimp growth were found with the probiotics used in the trials. Although the survival rates for both species in the first two trials were low and obviously affected by the disease outbreaks, the third trial on extensive... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems. |
| Ano: 2005 |
URL: http://orgprints.org/4329/3/Chen_Liao_2005_4p_revised%2Ded.doc |
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| Dabbert, S.; Stolze, M.; Häring, A.M.; Piorr, A.. |
| Organic farming has become an important aspect of European agri-environmental policy. Since the implementation of EC Reg. 2078/92, the EU promotes organic farming based explicitly on its positive effects on the environment. The objective of this paper is to contribute to a better understanding of organic farming's effects on the environment in comparison to conventional farming and to discuss the policy relevance of these issues. For this purpose the OECD set of environmental indicators for the agricultural sector has been adapted, taking into consideration only those indicators that are directly affected by the system of organic farming, as are the indicator categories ecosystem, natural resources, farm input and output, and health and welfare. Based on... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Policy environments and social economy. |
| Ano: 2000 |
URL: http://orgprints.org/2342/1/2342%2DDabbert%2Det%2Dal%2D2000%2Difoam%2Dbasel.pdf |
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| Hadjigeorgiou, Dr Ioannis; Xylouri, Prof Eftichia; Poulopoulou, Miss Ioanna; Frangiadaki, Miss Irene; Paparadi, Miss A; Patrikakis, Dr Charalampos; Sideridis, Prof Alexandros. |
| Organic Agriculture (OA) is a reply to Global Society‘s interest in food safety and enviromental conservation. Many European countries have significantly developed the OA sector, where Organic Animal Farming (OAF) systems hold a major part. Since, OA principles, methods and products are constantly evolving, an increasing number of agricultural agencies are using Web sites or portals to provide OA information to stakeholders. However, finding trustworthy information on OA is still time consuming, fragmented and associated with linguistic obstacles. This paper reports a new on-line service that provides (a) access to multilingual, specialized, updated and certified on-line information covering all OA plant and animal production aspects, (b) access to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Knowledge management; Technology transfer. |
| Ano: 2006 |
URL: http://orgprints.org/7290/1/Organic_Congress_Denmark.doc |
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| Registros recuperados: 8.082 | |
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