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| Registros recuperados: 683 | |
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| Garibay, Salvador; Amador, Manuel; Castro, Jonathan; Kilcher, Lukas. |
| Coffee is Nicaragua’s main organic product. There are 13,100 hectares of certified coffee. This area represents 10 percent of the total coffee production of Nicaragua and is managed by approximately 3,500 small producers. 90 percent of the organic coffee is sold for the export market. In Nicaragua a legal framework for organic farming as well as regulations for the development of environmental services payments exist (forest conservation, water management, biodiversity conservation, carbon sequestration). There are also studies on carbon sequestration and carbon emissions in agriculture, forestry and industry. However, there are no investigations relating specifically to organic agriculture and climate change. 2. Background investigation Since 2004,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Policy environments and social economy; Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/13207/1/garibay%2Detal%2D2008%2Dclimate%2Dchange%2Ddeveloping%2Dcountries.pdf |
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| Oudshoorn, Frank; Kristensen, Troels; Nadimi, Esmaeil. |
| The objective of this paper was to investigate the effect of limited grazing time on urination and defecation frequency, spatial distribution of excrement in the paddock, and the resulting nitrogen balance at animal and field level. During a 6-week period in early summer, 60 Holstein Frisian dairy cows (31.0±5.4 kg ECM) were randomly allocated to three different treatments, with grazing at clover-grass pasture during daytime for 4, 6.5 or 9 h daily. Indoor feeding, with a mixture of roughage and concentrates (13% crude protein), was restricted for treatment 4 and 6.5 h to the amount the 9-h treatment could eat. Cows allowed grazing at pasture for 4 h moved more rapidly during pasture, moved longer distance per active hour and used a higher proportion of... |
| Tipo: Journal paper |
Palavras-chave: Dairy cattle; Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/13856/1/13856.pdf |
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| Uusi-Kämppä, Jaana. |
| The buffer zones seem to be effective to stop erosion and trap particle bound P in surface runoff from the autumn ploughed clay soil. On pastures, the buffers are not so important, if P fertiliser is not surface applied and the grazing intensity is not too high. However, the high DRP loss to surface runoff may be a real problem on grass fields in spring. The buffers are not able to uptake nutrients in early spring when the runoff is highest. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2008 |
URL: http://orgprints.org/15042/1/njffosf.pdf |
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| Bautze, Lin; Nicolay, Gian L.; Meier, Matthias; Gattinger, Andreas; Müller, Adrian. |
| Climate change increases the number of risks for agricultural production in arid and semiarid regions, especially in Western Africa. Smallholder farmers are particularly vulnerable to climate change risks. These risks affect their socioeconomic situation, as well as the local food sector value chain in general. Therefore, their food security is threatened if smallholder farming structures do not adapt to them. Thus, effective climate change adaptation measures for smallholders are essential and should be implemented without delay. However, success hinges on the acceptance of the promoted measures among various stakeholders. Thus, their acceptance needs to be assessed before promoting. The project “The potential of sustainable land-use systems to promote... |
| Tipo: Book chapter |
Palavras-chave: Air and water emissions; Policy environments and social economy; Africa. |
| Ano: 2018 |
URL: http://orgprints.org/34706/1/Bautze-etal-2018_ReferenceWorkEntry_ClimateChangeAdaptationThrough-Chapter-p1-15.pdf |
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| Zhao, Jin; De Notaris, Chiara; Olesen, Jørgen E.. |
| Nitrate leaching losses from arable cropping systems cause severe damages to the environmental services worldwide. There is a considerable need for methods that allow rapid, easy and area covering detection of nitrate leaching to guide N management. We used three years of data from the 5th cycle of a long-term crop rotation experiment in Denmark to quantify the relationships between nitrate leaching in autumn and winter and field conditions in autumn as defined by three vegetation indices [VIs; Ratio Vegetation Index (RVI), Normalized Difference Vegetation Index (NDVI), Ratio Red Edge (RRE)] in autumn. Following cereal crops, catch crops significantly reduced nitrate leaching in autumn and winter, whereas this was only the case for one out of the three... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Air and water emissions; Farm nutrient management. |
| Ano: 2019 |
URL: http://orgprints.org/35137/1/Manuscript-20190324.pdf |
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| Chirinda, N.; Kracher, D.; Porter, J.R.; Olesen, J.E.; Petersen, B.M.; Doltra, J.; Kiese, R.; Butterbach-Bahl, K.. |
| Modelling of soil emissions of nitrous oxide (N2O) and carbon dioxide (CO2) is complicated by complex interactions between processes and factors influencing their production, consumption and transport. In this study N2O emissions and heterotrophic CO2 respiration were simulated from soils under winter wheat grown in three different organic and one inorganic fertilizer-based cropping system using two different models, i.e., MoBiLE-DNDC and FASSET. The two models were generally capable of simulating most seasonal trends of measured soil heterotrophic CO2 respiration and N2O emissions. Annual soil heterotrophic CO2 respiration was underestimated by both models in all systems (about 10−30% by FASSET and 10−40% by MoBiLE-DNDC). Both models overestimated annual... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Air and water emissions. |
| Ano: 2010 |
URL: http://orgprints.org/18512/1/Chirinda_et_al_(modelling).pdf |
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| Gratecap, J.B.; Wezel, A.; Casagrande, Marion; Martin, P.. |
| Organic farming is considered as a solution to preserve water quality in drinking water catchments. For local managers of these catchments it is thus important to identify conventional farmers for potential conversion to organic farming. The aim of this article is to assess technical similarity of conventional farmers concerned by a water catchment to organic farming. We build a typology of farmers based on technical logics related to cropping systems organization. We differentiated five types of farmers among 18 conventional dairy farmers and three recently converted organic farmers. According to our results, only two farmers can be considered as close to technical logics identified in organic farms. Nevertheless, we could identify partial technical... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Air and water emissions. |
| Ano: 2013 |
URL: http://orgprints.org/26278/1/Gratecap_2013_CIAG_Vol32.pdf |
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| Kristensen, H.L.; Thorup-Kristensen, K.. |
| • Deep roots may be important for uptake of NO3- by annual crops. A field experiment with the deep rooted crop curly kale (Brassica oleracea L. convar. acephala (DC.) Alef. var. sabellica L.) was performed to investigate root distribution and N uptake in deep soil layers. • Root distribution was investigated by use of minirhizotrons and root extractions to 2.4 m depth. The capacity for crop N uptake was studied by deep 15NO3- placement followed by analysis of plant 15N content after 3-30 days. • The atom percent 15N excess (APE) of plant samples was of similar size after uptake of 15N placed at depths in the range of 0.4-2 m. Root colonisation and start of 15N uptake were synchronized in 2.4 m depth. • The deep roots had higher inflow of 15N compared... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Soil biology; Farm nutrient management; Air and water emissions. |
| Ano: 2006 |
URL: http://orgprints.org/7918/1/7918.pdf |
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| Müller, Adrian; Meier, Matthias; Horka, Patrick; Heeb, Florian. |
| Im folgenden Bericht wird eine erste Analyse verschiedener Bausteine sowie eine gesamthafte Beurteilung des Potenzials einer benchmarkbasierten Methodologie unternommen, um bodenbürtige Lachgasemissionen aus der Landwirtschaft zu reduzieren und daraus CO2-Zertifikate für die Kompensation unter den Aktivitäten der Stiftung KliK zu generieren. Der Fokus in diesem Bericht liegt auf einem neuen Berechnungstool für bodenbürtige Lachgasemissionen auf der Ebene von Landwirtschaftsbetrieben als grundlegender Baustein für entsprechende Offset-Methodologien. Dies ist der Abschlussbericht einer Vorstudie zu dieser Thematik, der bei positiver Beurteilung des Potenzials dieses Zugangs eine vertiefte Hauptstudie und Umsetzungsphase für eine solche... |
| Tipo: Report |
Palavras-chave: Air and water emissions. |
| Ano: 2014 |
URL: http://orgprints.org/25706/1/N-Reduktionsmethodologie_Endversion2014_04_08_Web.pdf |
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| Haas, Guido; Geier, Uwe; Schulz, Dirk; Köpke, Ulrich. |
| Der Agrarsektor (Landwirtschaft, Garten- und Weinbau) der Bundesrepublik Deutschland (alt) verbrauchte im Jahre 1990/91 Energie in Höhe von ca. 413,82 PJ, entsprechend einem Anteil von näherungsweise 3,6% des nationalen Gesamtenergie-Einsatzes. Die daraus abgeleitete Kohlendioxid-Emission lag bei insgesamt ca. 27,658 Mio t CO2 und damit näherungsweise bei einem Anteil von insgesamt 3,9% der nationalen Emission. Flächenbezogen verursachte der Agrarsektor eine Kohlendioxid-Emission in Höhe von 2,344 t CO2 je Hektar. Die von der Bundesregierung Deutschlands angestrebte CO2-Minderung von mittelfristig 25 - 30% kann auch innerhalb des Agrarsektors umgesetzt werden. Durch Optimierung der Produktion und den Einsatz von regenerativen Energien wird dieses Ziel... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 1995 |
URL: http://orgprints.org/13930/1/BuLdw_KlimaD95.pdf |
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| Kratochvil, R.; Lindenthal, T.; Heß, J.; Freyer, B.. |
| Die tatsächlichen oder potentiellen volkswirtschaftlichen (externen) Kosten durch Umweltbelastung der intensiven Landbewirtschaftung werden der Allgemeinheit aufgebürdet, anstatt als Preis- bzw. Kostenfaktor in das betriebliche Rechnungswesen einzugehen. U.a. in Hinblick auf eine Verringerung externer Kosten der Landwirtschaft infolge Grund- und Trinkwasserbelastung wird der Ökologische Landbau als wirksame Alternative diskutiert. Eine Vielzahl wissenschaftlicher Untersuchungen belegt denn auch das hohe Maß an Grundwasserverträglichkeit des Biologischen Landbaus: So wiesen u. a. VEREIJKEN und WIJNANDS (1990),BRANDHUBER und HEGE (1992), MATTHEY (1992), SCHULTE (1996), BERG et al. (1997) sowie SCHLÜTER et al. (1997) deutlich niedrigere Nitratgehalte des... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Community development; Air and water emissions. |
| Ano: 1999 |
URL: http://orgprints.org/4105/1/4105%2Dkratochvil%2Dr%2Det%2Dal%2D1999%2Dwasser%2Dberlin.pdf |
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| Gattinger, Andreas; Oehen, Bernadette. |
| Les producteurs et productrices bio contribuent depuis longtemps à la protection du climat. De nombreuses directives de Bio Suisse vont dans cette direction: Interdiction des transports aériens, limitation des concentrés, interdiction des engrais de synthèse etc. Cette fiche technique montre les interactions entre le changement climatique et l'agriculture et présente des mesures supplémentaires pour diminuer les émissions de gaz à effet de serre dues aux entreprises agricoles biologiques. |
| Tipo: Book |
Palavras-chave: Air and water emissions. |
| Ano: 2013 |
URL: http://orgprints.org/25263/1/1579-climat.pdf |
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| Biernat, Lars; Loges, Ralf; Taube, Friedhelm. |
| Approximately 13 % of the total greenhouse gas emissions in Germany are caused by agricultural practices. From an environmental and economic point of view, gaseous N losses as well as nitrate leaching to groundwater play, a significant role. The aim of the present study is to analyze abiotic environmental effects of organic and conventional all-arable farming at a highly productive site in Northern Germany. Two different organic crop rotations with 25% vs. 40% legumes and no application of external N-fertilizers were compared over a two-year period to a typical site specific conventional rotation at an average mineral fertilser input of 195 kg N ha-1 a-1. For gas flux measurement, the closed-chamber method was applied. Nitrate leaching was measured by... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2015 |
URL: http://orgprints.org/27206/1/27206_biernat.pdf |
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| Registros recuperados: 683 | |
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