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| Registros recuperados: 508 | |
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| Larbi, Mohamed. |
| Le potentiel suppressif de certains composts et de leurs extraits sur les maladies telluriques ou foliaires a souvent été démontré. L’efficacité des composts et/ou des extraits varie en fonction du type de compost et du système plante hôte-pathogène. Les raisons de cette variabilité demeurent encore en grande partie méconnues. De plus, les mécanismes d’inhibition des pathogènes par les composts et/ou les extraits de composts restent encore insuffisamment explorés. Une meilleure connaissance des paramètres influençant les propriétés phytosanitaires des composts et de leurs extraits est donc indispensable afin de pouvoir optimiser leur utilisation pour lutter contre les maladies des plantes. Les objectifs du présent travail visent (i) la caractérisation des... |
| Tipo: Thesis |
Palavras-chave: Composting and manuring Crop health; Quality; Protection. |
| Ano: 2006 |
URL: http://orgprints.org/8935/1/larbi%2D2006%2Ddissertation.pdf |
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| Poulsen, Signe Herbers. |
| The doctoral thesis deals with the use of science communication in a digital environment and explores how the internet supports and develops international science communication between researchers and their target groups. Through several empirical investigations of the users and their use of organic research communication online the thesis underline the fact that that the internet has become a popular media and a primary source for science communication on organic research. Nevertheless the actual use of online resources depends on the user’s background and their social networks as well as the information provider’s design of the web communication. The results indicate that science communication online primarily consists of traditional forms of... |
| Tipo: Thesis |
Palavras-chave: Education; Extension and communication. |
| Ano: 2010 |
URL: http://orgprints.org/17163/1/17163.pdf |
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| Urbatzka, Peer. |
| Der Anbau von Sommerkörnererbsen ist im Ökologischen Landbau häufig aufgrund einer geringen Beikrautunterdrückung und daraus resultierender Druschprobleme sowie spezifischen Pilzkrankheiten schwierig. Zusätzlich wird dieser Kultur oft eine mangelnde Wettbewerbsfähigkeit gegenüber anderen Produktionsverfahren attestiert. Als Folge wurde in den letzten Jahren der An-bauumfang in der landwirtschaftlichen Praxis deutlich reduziert. Einerseits ist im ökologischen Pflanzenbau neben einer schwierigen Beikrautregulierung die Stickstoffversorgung der Fruchtfolge einer der größten Problembereiche. An-dererseits besteht in der ökologischen Tierhaltung ein großer Bedarf an ei-weißreichen Futtermitteln. Daher wurde in Rein- und Gemengesaat mit Getreide die... |
| Tipo: Thesis |
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Weed management. |
| Ano: 2010 |
URL: http://orgprints.org/17367/1/DissKurzfassung.doc |
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| Thyrring, Jakob. |
| Sub-Saharan Africa is changing. Population growth and climate changes have affected food and water available. This, and the expanding urbanisation have put further pressure on food and water security, in a region classified as one of the worlds poorest. Long draught and intense heavy rainfall destroys crops while urbanization leaves more people to be fed and less to produce. Much effort has been put in optimizing agricultural production; restore soil fecundity, and farming efficiency. However, increased agricultural production is not enough to improve and ensure proper food security in the developing countries. More than 50 % of the fruits and vegetables produced those regions are lost during transport. Postharvest handling is of central importance as... |
| Tipo: Thesis |
Palavras-chave: Food systems. |
| Ano: 2012 |
URL: http://orgprints.org/21055/4/21055.pdf |
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| Assis, Renato Linhares de. |
| A agroecologia é uma ciência, originária da busca de fundamento teórico para os movimentos de agricultura alternativa disseminados a partir da década de 1970. Corrente mais difundida, a agricultura orgânica é uma prática agrícola, e como tal construída socialmente. Verifica-se que o custo de conversão para a agricultura orgânica mantém relação inversa com o padrão inicial de produtividade, e que práticas agroecológicas são intensivas em mão-de-obra e favorecem a redução do risco financeiro da produção familiar, indicando maior adequação de sua difusão junto a este tipo de agricultor. Finaliza-se afirmando que, no Brasil, há necessidade de maior atuação do Estado, com políticas, agrícola e ambiental, específicas que fomentem a produção agroecológica e... |
| Tipo: Thesis |
Palavras-chave: Farm economics Social aspects Crop health; Quality; Protection Post harvest management and techniques. |
| Ano: 2002 |
URL: http://orgprints.org/20910/1/Assis_Agroecologia.pdf |
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| Poitral, Chloé. |
| Le développement des systèmes céréaliers sans élevage en Agriculture Biologique conduit à une utilisation croissante et coûteuse d’azote exogène à la ferme. Le semis de légumineuses sous couvert est une solution qui permet d’apporter de l’azote au sol et de contrôler les adventices. Cette technique fait l’objet de résultats contrastés. L’étude s’intéresse à la combinaison de deux sources d’azote : les légumineuses et la fertilisation de printemps, et à son effet sur le rendement et la teneur en protéines du blé en Rhône-Alpes. Les effets indirects de ces pratiques sur le système cultural sont étudiés à travers la pression des adventices et les maladies foliaires. L’expérience est menée sur cinq parcelles de blé réparties dans la région. Quatre espèces de... |
| Tipo: Thesis |
Palavras-chave: Cereals; Pulses and oilseeds Nutrient turnover Crop health; Quality; Protection Farm nutrient management. |
| Ano: 2009 |
URL: http://orgprints.org/19381/4/Poitral_2009_%2319381_master_thesis.pdf |
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| Kaya, Seçkin; Düzyaman, Eftal. |
| Bu çalışma, 2008 ve 2009 yıllarında Bornova ve Menemen lokasyonlarında, yerel sofralık domates populasyonlarının organik tarıma uygunlukları ve organik çeşit geliştirme amacıyla kullanım olanaklarının araştırılması amacıyla yürütülmüştür. Bu amaçla, çeşitli kaynaklardan elde edilen 33 farklı domates genotipi taranmıştır. Domates genotipleri iki lokasyonda da açık tarla koşullarında, tesadüf blokları deneme desenine göre, her tekerrürde 30 bitki olacak şekilde organik tarım şartlarında yetiştirilmiştir. Bitkiler damla sulama yöntemi ile sulanmış ve gübreleme kompost çayı kullanılarak yapılmıştır. 2 yıl ve 2 ayrı lokasyonda kurulan denemelerde, verim, meyve çap ve boyu, meyve rengi, toplam suda çözünebilir kuru madde, titre edilebilir... |
| Tipo: Thesis |
Palavras-chave: "Organics" in general Crop combinations and interactions Breeding; Genetics and propagation. |
| Ano: 2012 |
URL: http://orgprints.org/23362/1/Se%C3%A7kin%20KAYA.pdf |
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| Jawtusch, Julia. |
| Die Kontrolle und Zertifizierung von ökologischen Produkten in Drittländern für den Import in die EU stellt eine Herausforderung dar. Die Zielsetzung der vorliegenden Arbeit ist eine Untersuchung der möglichen Auswirkungen der neuen Drittlandsregelung auf der Basis einer Expertenbefragung. Acht Experten wurden telefonisch anhand eines Leitfadens befragt. Zwei übergeordnete Fragestellungen sollten beantwortet werden: 1. Welche Vor- und Nachteile beinhalten Konformität beziehungsweise Gleichwertigkeit in Bezug auf die Verbrauchersicherheit von Drittlands-Öko-Produkten? 2. Welche Vor- und Nachteile bieten Konformität beziehungsweise Gleichwertigkeit in Bezug auf kleinbäuerliche Landwirtschaft in Entwicklungsländern? Die Konformität ist sowohl aus dem... |
| Tipo: Thesis |
Palavras-chave: Regulation. |
| Ano: 2008 |
URL: http://orgprints.org/15728/1/Auswirkungen_neue_Drittlandsimportregelung_Jawtusch_2008%2D06%2D09.pdf |
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| Uusitalo, Risto. |
| Runoff phosphorus (P) associated with eroded soil contributes to eutrophication to some extent. The present work examines two methods for estimating the potential bioavailability of particulate P (PP) in runoff, and studies the concentrations and losses of different P forms in surface and subsurface runoff from arable soils. The potential bioavailability of PP was approximated by extraction with (i) anion exchange resin (AER-PP), giving a measure of desorbable PP under aerobic conditions, and with (ii) bicarbonate-dithionite (BD-PP), which dissolves redox-labile PP. Both methods were applied in runoff analysis without sediment preconcentration. |
| Tipo: Thesis |
Palavras-chave: Air and water emissions. |
| Ano: 2004 |
URL: http://orgprints.org/11135/1/met53.pdf |
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| Zambaux, Pauline; Melot, Romain; Aubry, C.. |
| Enjeu de santé publique et de préservation des milieux, la protection des captages et de la ressource en eau fait l’objet d’une série de dispositifs mis en oeuvre à la fois de façon règlementaire et volontaire. Les acteurs de la protection, à l’échelon local, ont notamment recours à toute la gamme d’outils fonciers : de la maîtrise de l’usage du sol à l’acquisition foncière en propriété. En plus, la mise en oeuvre de pratiques agricoles durables, par le biais du bail environnemental notamment, est une orientation forte pour concilier activité agricole et protection des ressources en eau. Les expériences observables en Île-de-France font état des obstacles rencontrés pour la mise en oeuvre de ce type d’actions. La principale difficulté, en dehors de la... |
| Tipo: Thesis |
Palavras-chave: Air and water emissions; Policy environments and social economy; Regulation. |
| Ano: 2011 |
URL: http://orgprints.org/27927/1/Zambaux_2011_M%C3%A9moire_ABIPEC.pdf |
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| Christensen, Jesper Ørsnes; Bennedsgaard, Torben Werner; Capion, N.. |
| The effectiveness of a footbath with a calcium carbonate (CaCO3) suspension was evaluated as treatment and prevention of digital dermatitis (DD) in four commercial dairy herds. DD is a serious problem in dairy herds in many countries including Denmark. Footbaths have been the preferred method for treating and preventing DD. Different compounds have been used in these, most og them chemical disinfectants aimed at reducing bacterial infection. However many of these compounds have no proven effect against DD. Others have effect against DD but are either harmful to humans, cows or the environment. The objective of this study was to evaluate calcium carbonate (CaCO3) used in footbaths as treatment and prevention of DD. The study was done as a clinical... |
| Tipo: Thesis |
Palavras-chave: Health and welfare. |
| Ano: 2011 |
URL: http://orgprints.org/20662/4/20662.pdf |
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| Aude, Erik. |
| While the development objective of my Ph.D.-study was to investigate the importance of disturbance and productivity for the shaping of dry grass-dominated plant communities, the specific objectives were to test a number of hypotheses regarding vegetation development in hedgerow vegetation and experimental vegetation in response to experimental treatments. I combined field studies with experiments. Firstly, field vegetation data and explanatory variables were collected in organic and conventional hedgerows (Paper I and II). Secondly, an outdoor factorial microcosm experiment was carried out in order to test the influence of nutrients, defoliation and vascular plant species composition on the recruitment and diversity of bryophytes (Paper III). Finally, a... |
| Tipo: Thesis |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2004 |
URL: http://orgprints.org/10370/1/10370.pdf |
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| Stepanov, Riina. |
| Milk is as ancient as mankind itself, as it is created to feed the mammalian infant. All species of mammals, from man to whales, produce milk for this purpose. The role of milk in nature is to nourish and provide immunological protection for the mammalian young and it has high nutritional value. Milk that was used in consumer test was treated in a way that nutritional value would remain. The main goal was to see how consumer perceive different milk. The role of milk in the traditional diet has varied remarkably in different regions of the world. The tropical countries have not been traditional milk consumers, whereas the more northern regions of the world. Europe (especially Scandinavia) and North America, have traditionally consumed far more milk and milk... |
| Tipo: Thesis |
Palavras-chave: "Organics" in general. |
| Ano: 2007 |
URL: http://orgprints.org/19973/1/19973.pdf |
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| Machado, Raphael. |
| O Brasil é o maior produtor mundial de cana-de-açúcar, tendo duas regiões produtoras (centro-sul e nordeste) com safras alternadas, podendo manter sua presença no mercado mundial ao longo de todo o ano. Se por um lado as grandes usinas têm como principais produtos o açúcar e o álcool, por outro lado os pequenos produtores rurais têm encontrado na rapadura, no açúcar mascavo e na cachaça, formas de agregar valor num nicho de mercado ainda pouco explorado pelos grandes produtores da cultura. Precisamente para esses pequenos produtores, a produção de cana-de-açúcar orgânica em pequenas áreas, consorciada com outras culturas de primeira necessidade, mostra-se uma alternativa viável. Considerando-se a área total cultivada com cana-de-açúcar, aproximadamente 20%... |
| Tipo: Thesis |
Palavras-chave: Production systems; Farm economics; Farming Systems. |
| Ano: 2008 |
URL: http://orgprints.org/22752/1/SistemasOrganicosDeProdu%C3%A7%C3%A3oPara_11578-1.pdf |
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| Brühl, Katharina. |
| The EU legislation on organic farming was aimed at forcing the use of organic seeds in organic production. However, there are striking differences in its implementation across the EU and the use of organic seeds is still sparse. This study examines the use of organic seeds for sweet pepper (Capsicum annuum L.) production in a pilot study for the Netherlands and Spain. In order to identify existing incentives and constraints, a supply chain analysis is applied, derogation requests for using non-organic seeds are analysed and interviews with stakeholders of the supply chain are conducted. Based on the findings, recommendations are given on how each stakeholder can participate in improving the implementation of the EU law, promoting the use of organic seeds. |
| Tipo: Thesis |
Palavras-chave: Breeding; Genetics and propagation Netherlands Spain Regulation. |
| Ano: 2017 |
URL: http://orgprints.org/33218/1/Master%27s%20Thesis%20Katharina%20Bruehl%20%281%29.pdf |
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| Harder, Dennis. |
| Die Trocknung ist einer der ältesten, kostengünstigsten und weit verbreiteten Methoden um Agrarprodukte und andere Arten von Lebensmittel zu konservieren. Am weitesten verbreitet ist der Konvektionstrockner. In den meisten Anwendungen arbeiten die Trockner mit thermischer Energie, die das Wasser im Trocknungsgut in den gasförmigen Zustand überführt und abtransportiert. Die Hochzeit der Forschung über Trocknungstechnik war in den 80er Jahren und in denen die Automatisierung noch nicht fortgeschritten war. Die Trocknungsparameter des komplexen Prozess mit Wärme- und Massenaustausch wurden experimentell ermittelt. Die Folgen für die Prozessführung sind eine reduzierte Energieeffizienz, unzureichende Produktqualitäten und höhere Trocknungszeiten. Der Inhalt... |
| Tipo: Thesis |
Palavras-chave: Processing; Packaging and transportation. |
| Ano: 2016 |
URL: http://orgprints.org/34404/1/Abstract_Thesis_DH.pdf |
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| Shah, Pratik. |
| Karnataka state is a state of India with diverse agro-climatic zones.In 2001 it had a population of 53 million and 66% of population habitants living in villages. Agriculture is still major occupation in the rural areas of Karnataka and more than 90% of rural people are dependent on agriculture and agro-industries. However irregular rainfall patterns,pest attacks and poor nutrient management are resulting more frequently in crop failures. This has resulted in agrarian distress as with crop failures, farmers are unable to repay the loans. The government of Karnataka introduced Karnataka state policy of organic farming to decrease agrarian distress. In order to asses the impacts of this policy on agriculture, economic and ecological... |
| Tipo: Thesis |
Palavras-chave: Crop husbandry; Landscape and recreation; India. |
| Ano: 2010 |
URL: http://orgprints.org/19207/1/Final_thesis_Pratik_Shah.pdf |
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| Dhamala, NR. |
| Plant diversity is often low in high-yielding temporary grasslands in Europe, with grass-clover being the traditional dominant mixture. Non-leguminous dicot forage herbs have potential as complementary species to traditional grassland species. Chicory (Cichorium intybus L.), ribwort plantain (Plantago lanceolata L.) and caraway (Carum carvi L.) are the three non-leguminous dicot forage herbs (hereafter called forbs) that have attracted most attention. Another form of grassland production of increasing interest is the practice of growing species mixtures containing only forage legumes for low-input production of biomass with high protein content. In this study, grassland nitrogen (N) dynamics were studied in a sward that included the forbs chicory, plantain... |
| Tipo: Thesis |
Palavras-chave: Crop combinations and interactions; Nutrient turnover. |
| Ano: 2017 |
URL: http://orgprints.org/32976/1/A%20Complete%20PhD%20Thesis-Nawa%20Raj%20Dhamala%20%2819.04.2017%29-%20%20Sumitted%20to%20GSST.pdf |
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| Registros recuperados: 508 | |
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