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| Registros recuperados: 4.506 | |
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| Sønderskov, Kim Mannemar; Daugbjerg, Carsten. |
| Trustworthy eco-labels provide consumers with valuable information on environmentally friendly products and thus promote green consumerism. But what makes an eco-label trustworthy and what can government do to increase consumer confidence? The scant existing literature indicates that low governmental involvement increases confidence. This suggests that government should just provide the basic legal framework for eco-labeling and leave the rest to non-governmental organizations. However, the empirical underpinning of this conclusion is insufficient. This paper analyses consumer confidence in different organic food labeling regimes with varying degrees of governmental involvement. Using unique and detailed survey data from USA, United Kingdom, Denmark and... |
| Tipo: Journal paper |
Palavras-chave: Policy environments and social economy. |
| Ano: 2011 |
URL: http://orgprints.org/20902/7/20902.pdf |
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| Høgh-Jensen, Dr Henning; Schjoerring, Dr Jan K.; Soussana, Dr Jean-Francois. |
| The effects of P deficiency on growth, N2-fixation and photosynthesis in white clover (Trifolium repens L.) were investigated using three contrasting relative addition rates of P, or following abrupt withdrawal of the P supply. Responses to a constant below-optimum P supply rate consisted of a decline in N2-fixation per unit root weight and a small reduction in the efficiency with which electrons were allocated to the reduction of N2 in the nodules. Abrupt P removal arrested nodule growth and caused a substantial decline in nitrogenase activity per unit root weight, but not per unit nodule mass. Similarly, the rate of photosynthesis per unit leaf area was unaffected by abrupt P removal, while the CO2 acquisition for the plant as a whole decreased due to... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2002 |
URL: http://orgprints.org/286/1/Pstress%2Dfinal.pdf |
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| Sternfeld, Eva. |
| China joined the international organic movement comparatively late. Challenged by the scarcity of arable land and a large population to feed, the Chinese Ministry of Agriculture (MoA) for many years has been reluctant to support organic farming that might result in a drop of agricultural output. On the contrary, China’s “Green Revolution” catapulted the country to a leading producer and user of agrochemicals in the world. This development came at a high cost for the country’s environmental quality and food safety. In recent years, accumulating public complaints about environmental pollution, food poisoning, sickness and death of farmers poisoned by agrochemicals as well as increasing difficulties with agricultural exports rejected as a result of... |
| Tipo: Journal paper |
Palavras-chave: China. |
| Ano: 2009 |
URL: http://orgprints.org/15979/1/15979.pdf |
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| Padel, Susanne; Midmore, Peter. |
| The purpose of the paper is present experiences using a well established forecasting tool, the Delphi- method, to explore the dynamics of, and prospects for the development of the market for organic food in Europe. DELPHI, developed by the Rand co-operation to improve military technology forecasting, uses expert feedback to refine an informed perspective on complex or uncertain issues. This study used experts of the organic food market in 18 countries to explore factors influencing the development of the organic market; future market prospects, and the role of governments in future market development. The results show that short supply chains and focus on regional organic shops may be an indication of an earlier stage of market development, likely to be... |
| Tipo: Journal paper |
Palavras-chave: Markets and trade. |
| Ano: 2005 |
URL: http://orgprints.org/8071/2/BFJ_Delphi_0701070806.pdf |
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| Nielsen, N.E.; Thomsen, I.K.; Berntsen, J.. |
| Vårbyggens optagelse og udnyttelse af næringsstoffer, konkurrenceevne over for ukrudt samt sygdomsresistens har stor betydning for den økologiske planteavl. Opnåelse af en optimal ernæring forudsætter den rette kombination af et stort antal biologiske, fysiske og kemiske jord- og plantefaktorer. Kulturplanter, som sås om foråret, starter i reglen med en moderat mangel på fosfor og kalium (Nielsen et al., 2003). I pløjelaget findes hovedparten af det plantetilgængelige fosfor og i en vis udstrækning tillige kalium og mikronæringsstoffer, mens det plantetilgængelige kvælstof og svovl ofte er fordelt i hele roddybden. |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds. |
| Ano: 2004 |
URL: http://orgprints.org/3278/1/F%C3%98JOenyt.pdf |
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| Porto, Marcelo Firpo de Souza; Schütz, Gabriel Eduardo. |
| O artigo discute limites, alternativas e desafios da gestão ambiental nas sociedades contemporâneas inseridas no capitalismo globalizado a partir de uma análise crítica apoiada em autores das ciências sociais, da ecologia política e da saúde coletiva. Para isso, sistematizamos o significado da gestão ambiental hegemônica em sua vertente da ecoeficiência e seus limites para o enfrentamento dos riscos ambientais e para a construção de processos e sociedades mais democráticos. Construímos quatro tipos ideais de cenários envolvendo possíveis combinações entre gestão ambiental e democracia. Este modelo serviu de base, juntamente com trabalhos acadêmicos e a experiência teórica e militante dos autores, para uma reflexão sobre as características atuais e as... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Social aspects. |
| Ano: 2012 |
URL: http://orgprints.org/28518/1/Souza_gest%C3%A3o.pdf |
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| Rasmussen, Jesper; Bibby, Bo Martin; Schou, Anders P.. |
| In six field experiments it was investigated whether row spacing, timing, direction and orientation of post-emergence weed harrowing in spring barley influenced the selectivity and whether it is important that increasing intensities of harrowing are generated either by increasing number of passes or increasing driving speed. Selectivity was defined as the relationship between crop burial in soil immediately after treatment and weed control. To estimate crop burial, digital image analysis was used in order to make the estimations objective. The study showed that narrow row spacing decreased selectivity in a late growth stage (21) whereas row spacing in the range of 5.3 cm to 24 cm had no effects in an early growth stage (12). Harrowing across rows decreased... |
| Tipo: Journal paper |
Palavras-chave: Weed management; Technology transfer. |
| Ano: 2008 |
URL: http://orgprints.org/14987/1/14987.pdf |
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| Medeiros, Damiana Cleuma de; Azevedo, Celicina Maria da Silveira Borges; Marques, Luciano Façanha; Sousa, Robson Alexsandro; Oliveira, Cosme Jales de. |
| O objetivo deste trabalho foi avaliar a produção de mudas de tomate em três substratos sob irrigação com efluente de piscicultura. O experimento foi conduzido na horta do Departamento de Ciências Vegetais, na Universidade Federal Rural do Semiárido (UFERSA), Mossoró, RN. O delineamento experimental foi o inteiramente casualizado, em esquema fatorial 3 x 2, com quatro repetições, sendo os tratamentos constituídos pelas combinações tipos de substrato (Plantmax®, composto orgânico e areia lavada) com fonte de água de irrigação (efluente de piscicultura e água de poço). A avaliação foi feita aos 24 dias da germinação através de número de folhas, altura da parte aérea, comprimento da raiz principal, massa seca da parte aérea e massa seca do sistema radicular. O... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Vegetables; Farm nutrient management; Irrigation and drainage. |
| Ano: 2013 |
URL: http://orgprints.org/25600/1/Medeiros_Qualidade%20de%20mudas%20de%20tomate%20em%20fun%C3%A7%C3%A3o%20do%20substrato%20e%20irriga%C3%A7%C3%A3o%20com%20efluente.pdf |
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| Wyss, Eric; Pfiffner, Lukas. |
| Conservation and enhancement of biodiversity are mentioned in the International Federation of Organic Agriculture Movements (IFOAM) standards and in all national guidelines as essential pillars for organic agriculture. Recent reviews show that organic agriculture enhances the number of species and the abundance of many taxa (plants, birds, mammals, earthworms, arthropods, soil microbes), compared with conventional agriculture. Considering the benefits for sustainability, a multi-criteria analysis shows that organic agriculture not only improves biodiversity but also has positive effects on soil (e.g., soil erosion, structure, biological activity), water (e.g., no pesticide residues) and climatic factors (e.g., air pollution). In organic horticulture,... |
| Tipo: Journal paper |
Palavras-chave: Vegetables; Biodiversity and ecosystem services; Fruit and berries. |
| Ano: 2008 |
URL: http://orgprints.org/17807/1/wyss-pfiffner-2008-actahort.pdf |
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| Leiber, Florian; Schenk, Isabel K.; Maeschli, Ariane; Ivemeyer, Silvia; Zeitz, Johanna O.; Moakes, Simon; Klocke, Peter; Staehli, Pamela; Notz, Christophe; Walkenhorst, Michael. |
| In response to increasing efforts for reducing concentrate inputs to organic dairy production in grassland-rich areas of Europe, a long-term study was conducted, which assessed the impacts of concentrate reductions on cows’ performance, health, fertility and average herd age. In total, 42 Swiss commercial organic dairy cattle farms were monitored over 6 years (‘Y0’, 2008/09 until ‘Y5’, 2013/14). In comparison with overall data of Swiss herdbooks (including conventional and organic farms), the herds involved in the project had lower milk yields, similar milk solids, shorter calving intervals and higher average lactation numbers. During the first 3 project years farmers reduced the concentrate proportion (i.e. cereals, oilseeds and grain legumes) in the... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; Beef cattle; Feeding and growth; Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/32230/1/Leiber_etal_2017_animal_final.pdf |
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| Eriksen, J.; Hermansen, J.E.. |
| In Danish outdoor pig production the sows are usually kept on grassland, while their progeny are transferred at weaning to indoor housing with access to an outdoor concrete pen. It may seem paradoxical that a large part of meat consumed from outdoor systems comes from pigs that during the majority of their life have been prevented from natural behaviour such as rooting, digging and grazing. The explanation is the drawbacks of rearing growers outdoors including huge space demand, high work expenditure, high feed consumption and high environmental costs due to nutrient losses to aquifers and the atmosphere caused by high nutrient load and difficulty maintaining grass cover. However, it may be questioned if pigs reared indoors comply with consumers’... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover. |
| Ano: 2005 |
URL: http://orgprints.org/5482/1/5482.PDF |
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| Axelsen, J.; Bruus-Pedersen, M.; Larsen, T.; Krogh, P.H.. |
| Soil fauna diversity, as well as total mite and springtail numbers was correlated with soil type, tillage intensity and fertiliser use as well as crop and grazing history and duration of the current state of the field. 430 samples taken in 2002 on a wide range of organically farmed fields also showed that soil type interacted with crop type and grazing intensity. A higher number of mites and springtails were found in crops that included clover, almost independently of soil type. Higher numbers of mites were found at high grazing intensity compared to low grazing intensity on the same soil type. In 2003, microarthropods were collected in spring, summer and autumn in Southern Jutland, Mid-Jutland and Sealand. In each region both cereal and vegetable fields... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services; Soil tillage. |
| Ano: 2006 |
URL: http://orgprints.org/7981/2/7981.pdf |
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| Casaroli, Derblai; Garcia, Danton C.; Muniz, Marlove F. B.; Menezes, Nilson L. de. |
| O trabalho teve como objetivos avaliar e correlacionar a qualidade sanitária e fisiológica de sementes de abóbora, variedade Menina Brasileira (Cucurbita moschata.). Foram avaliados dois lotes de sementes de abóbora produzidas no sistema agroecológico e quatro no sistema convencional, com e sem tratamento químico. Os lotes foram submetidos aos testes de sanidade, seguindo a metodologia do “Blotter test”, com congelamento, germinação e vigor (primeira contagem, índice de velocidade de germinação, envelhecimento acelerado e emergência de plântulas). Os resultados indicaram a separação dos lotes de diferentes origens a partir da qualidade sanitária e fisiológica, onde as maiores incidências de fungos foram observadas nos lotes agroecológicos e o maior... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry Crop health; Quality; Protection. |
| Ano: 2006 |
URL: http://orgprints.org/20062/1/Casaroli_qualidade.pdf |
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| Birkhofer , K; Fließbach , A; Wise , DH; Scheu , S. |
| Organically managed agroecosystems rely in part on biological control to prevent pest outbreaks. Generalist predators (Araneae, Carabidae and Staphylinidae) are a major component of the natural enemy community in agroecosystems. We assessed the seasonal dynamics of major generalist predator groups in conventionally and organically managed grass–clover fields that primarily differed by fertilisation strategy. We further established an experiment, manipulating the abundant wolf spider genus Pardosa, to identify the importance of these predators for herbivore suppression in the same system and growth period. Organic management significantly enhanced ground-active spider numbers early and late in the growing season, with potentially positive effects of plant... |
| Tipo: Journal paper |
Palavras-chave: Soil biology; Biodiversity and ecosystem services. |
| Ano: 2008 |
URL: http://orgprints.org/19615/1/birkkhofer%2Detal%2D2008%2Dpredators.pdf |
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| Registros recuperados: 4.506 | |
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