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| Registros recuperados: 4.506 | |
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| Offermann, Frank; Nieberg, Hiltrud. |
| Organic farming in Europe has increased rapidly since the early 1990s but still only accounts for a small share of production. This article analyses the structure and financial performance of organic farming in Europe using data from 18 countries. In the countries analysed, organic farms achieved significant price preniia for their outputs and were able to compete financially with conventional farms, with equal or higher profits in most cases, even though yields were up to 40 per cent lower. There was, however, a wide variation in performance within the samples and between countries and farm types. Consumer willingness to pay higher prices for organic products along with European Union and government support payments for organic farming and the design of... |
| Tipo: Journal paper |
Palavras-chave: Policy environments and social economy. |
| Ano: 2002 |
URL: http://orgprints.org/827/1/scanned_fulltext.pdf |
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| Fontana, Mario; Berner, Alfred; Mäder, Paul; Lamy, Frederic; Pascal, Boivin. |
| Soil conservation practices are growingly used with different aims such as reducing fuel consumption and preserving soil organic carbon (SOC). Among others, reduced tillage (RT) often replaces conventional tillage (CT). However, the compared impact of these practices on soil quality remains a matter of controversy. Moreover, the various changes expected are rarely considered all together though they are known to interact. This study aimed at characterizing together the changes in SOC, microbial activity, and a large set of physical properties when comparing RT and CT performed on a clayey soil. Shrinkage analysis allowed to characterize simultaneously the soil pore systems, their volume, air and water content, the hydro-structural stability, and the... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Soil tillage. |
| Ano: 2015 |
URL: http://orgprints.org/29851/1/E_Fontana_2015_SSAJ.pdf |
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| Paull, John. |
| Few agriculture books achieve the status of ‘classic’. F. H. King’s book Farmers of Forty Centuries or Permanent Agriculture in China, Korea and Japan was privately published in Wisconsin, USA, in 1911. The book had an in-auspicious start, and the longevity and acclaim that this book has since achieved must have been, then, barely conceivable. The author was dead, the book was incomplete, and there was no commercial publisher. Yet through a combination of perhaps luck and circumstance the book was ‘resurrected’ in 1927 by a London publisher, Jonathan Cape, who then kept it in print for more than two decades. The London issue of King’s book was favorably cited in the 1930s and 1940s by leading agriculture and organic agriculture writers including: Lord... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Asia; China; History of organics. |
| Ano: 2011 |
URL: http://orgprints.org/22530/1/Paull2011King.AgSciAbstract.pdf |
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| Hüppi, Roman; Felber, Raphael; Krauss, Maike; Six, Johan; Leifeld, Jens; Fuß, Roland. |
| The static chamber approach is often used for greenhouse gas (GHG) flux measurements, whereby the flux is deduced from the increase of species concentration after closing the chamber. Since this increase changes diffusion gradients between chamber air and soil air, a nonlinear increase is expected. Lateral gas flow and leakages also contribute to non linearity. Several models have been suggested to account for this non linearity, the most recent being the Hutchinson±Mosier regression model (HMR). However, the practical application of these models is challenging because the researcher needs to decide for each flux whether a nonlinear fit is appropriate or exaggerates flux estimates due to measurement artifacts. In the latter case, a flux estimate from the... |
| Tipo: Journal paper |
Palavras-chave: Specific methods; Air and water emissions. |
| Ano: 2018 |
URL: http://orgprints.org/34683/1/hueppi_etal_2018_PlosOne_Vol13_Issue7-p1-17.pdf |
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| Thürig, Barbara; Fließbach, Andreas; Berger, Nicole; Fuchs, Jacques G.; Kraus, Noemy; Mahlberg, Nicole; Nietlispach, Bruno; Tamm, Lucius. |
| The aim of this study was to investigate the potentials and limitations in restoring soil suppressiveness in disturbed soils. Soils from three sites in UK and Switzerland (STC, REC, THE) differing in their level of suppressiveness to soil-borne and air-borne diseases were γ-irradiated and this soil matrix was re-inoculated with 1% (w/w) of either parent native soil or native soil from the other sites (‘soil inoculum’). Suppressiveness to air-borne and soil-borne diseases was quantified by means of the host–pathogen systems Lepidium sativum (cress)–Pythium ultimum, an oomycete causing root rot and seedling damping-off, and Arabidopsis thaliana–Hyaloperonospora parasitica, an oomycete causing downy mildew. Soil microbial biomass, activity and community... |
| Tipo: Journal paper |
Palavras-chave: Soil biology Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/17866/1/thuerig-etal-2009-see-front-matter.pdf |
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| Registros recuperados: 4.506 | |
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