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Effect of pasture botanical composition on milk composition in organic production Organic Eprints
Adler, Steffen; Dahl, A.V.; Vae, A.H.; Thuen, E.; Garmo, T.; Krogh-Jensen, S.; Hansen-Møller, J.; Steinshamn, Håvard.
Milk samples from sixteen Norwegian Red dairy cows grazing mixed swards of either grass-red clover (GR) or mixed swards of sown and unsown species of grass, clover and other herbs (GCH) were collected during four periods. Both pastures were organically managed. Pasture botanical composition had no effect on milk fat, protein or vitamin concentration and only minor effects on fatty acid composition. Milk from GR had higher concentrations of the phytoestrogens equol, genistein and biochanin A than the milk from GCH. Concentrations of equol in milk from GR were higher than concentrations reported from experiments with red clover silage. The oxidative stability of the milk lipids was not affected by pasture type.
Tipo: Conference paper, poster, etc. Palavras-chave: Dairy cattle; Pasture and forage crops; Feeding and growth.
Ano: 2010 URL: http://orgprints.org/17493/1/147_Adler_AH.pdf
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Forage botanical and chemical composition on dairy farms with different grassland systems and production systems Organic Eprints
Adler, Steffen; Steinshamn, Håvard.
Thirty-two dairy farms in Middle-Norway with different grassland systems (short-term (<4 years) grassland (S) or long-term (>7 years) grassland (L)) and different production systems (organic (O) or conventional (C)) were compared in a field study in 2007. In a principal component analysis on variables including farm details, botanical composition and chemical forage composition, the farms were separated into organic and conventional farms with the exception of one farm. Amongst the organic farms most SO farms were distinguished from LO farms. Concentration of forage crude protein was positively correlated with proportion of grass. Concentration of non-fibrous carbohydrates, in vitro digestibility and net energy lactation was positively correlated...
Tipo: Conference paper, poster, etc. Palavras-chave: Dairy cattle; Pasture and forage crops.
Ano: 2010 URL: http://orgprints.org/17497/1/149_Adler_AH.pdf
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Ley Destruction with Shallow Ploughing or Cultivators Organic Eprints
Alföldi, Thomas; Wüthrich, Bertrand.
To plough a ley at a maximum depth of 10 cm is a major challenge. The video shows how different machines succeed in handling the issue. The following machines are presented: 01:08 WecoDyn (Bärtschi Hüswil) 02:10 Kerner Komet (Alphatec) 3:23 Vario Digger (PL Agri - Service) 04:25 Treffler TG 300 (GVS agricultural) 05:22 Carré Penterra (Grunderco) 06:08 Einböck Taifun (Aebi Suisse) 06:52 Skim plough Ovlac (Aebi Suisse) 07:28 Standard Plough Kverneland (Agriott) The choice of a machine for a specific farm is highly dependent on the prevailing soil conditions, the weed pressure and its crop rotation and should be carefully considered. The Video is available in German https://www.youtube.com/watch?v=McZU2lTYfyI and in French...
Tipo: Practice tool Palavras-chave: Pasture and forage crops; Production systems; Soil tillage.
Ano: 2016 URL: http://orgprints.org/30994/1/video.php_y%3Dhttps_%252F%252Fwww.youtube.com%252Fwatch_v%3DMcZU2lTYfyI
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Avaliação preliminar de um sistema rotacionado em pastagens nativas no Pantanal Organic Eprints
Amador, Gisaine de Andrade; Keuroglian, Alexine; Eaton, Donald P.; Guimaraes, Jóber; Santos, Sandra Aparecida.
O sistema rotacionado de pastagens é uma forma de manejo desenvolvida para garantir melhor eficiência na utilização da forragem, numa determinada área de pastagem. Neste estudo foram apresentados alguns resultados preliminares sobre um projeto piloto que visa avaliar a implantação de um sistema rotacionado, com pastagens nativas, numa fazenda particular na sub-região da Nhecolândia, Pantanal, MS. Este estudo piloto indicou que as novilhas mantidas em sistema rotacionado tiveram um melhor ganho de peso, quando comparadas com novilhas da mesma categoria mantidas em sistema contínuo, mas no ano anterior. Porém, como no Pantanal a dinâmica das pastagens é variável entre anos, estudos adicionais devem ser feitos comparando o sistema rotacionado com o contínuo,...
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Beef cattle.
Ano: 2008 URL: http://orgprints.org/17365/1/Amador_2SAMGSul_.pdf
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Short-term carbon and nitrogen cycling in urine patches assessed by combined carbon-13 and nitrogen-15 labelling. Organic Eprints
Ambus, P.; Petersen, S.O.; Soussana, J.-F..
Deposition of urine and dung by grazing animals is a strong source for N2O production and evolution in grass pastures. Investigations have shown that at least 20% of the annual losses of N2O from a grazed pasture may be associated with urine patches. Moreover, it is well known that urine depositions causes plant damage (scorching) and root death. It can therefore be hypothesized that organic C is released, which may further stimulate the production of N2O. In this study we have used combined 13C-pulse labeling and 15N-labeled urine in order to determine the amount of plant derived C respired in response to the urine application and assess the N2O emission factor from urine patches. Over a six weeks course the cumulated amount of CO2 evolved equaled the...
Tipo: Journal paper Palavras-chave: Pasture and forage crops; Air and water emissions.
Ano: 2007 URL: http://orgprints.org/10143/1/AGEE2979-Jan2007.pdf
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Wirkung verschiedener Nutzungsintensitäten auf montane Goldhaferwiesen im Biolandbau Organic Eprints
Angeringer, Wolfgang; Starz, Walter; Karrer, Gerhard.
In 2012 about 25 % of permanent Austrian grasslands were managed organically. At the same time the farms enlarged their average field areas especially in Alpine regions. In order to investigate intensification limits of montane meadows, an on-farm field experiment at the Upper Styrian Pöls valley was established in 2008. The triannual case study consisted of a balanced incomplete block design with 30 sub-plots at two autochthonous meadows of the Trisetetum association. These examined six treatments with different cutting regimes (2, 3, 4 cuts per year) and either slurry or solid manure for organic fertilization. Three years of investigation describe changes in coverage of grassland species as well as yield quantity and quality. The results show changes in...
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Composting and manuring.
Ano: 2013 URL: http://orgprints.org/21433/1/21433_angeringer.pdf
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Vegetation change of mountainous hay meadows to intensified management regime in organic farming Organic Eprints
Angeringer, Wolfgang; Starz, Walter; Pfister, Rupert; Rohrer, Hannes; Karrer, Gerhard.
The whole vegetation assemblage of 60 relevés (4 m²) in a block design was examined at two mountainous hay meadow stands over a two-year period. All sites were situated at a certified organic farm, managed according to the guidelines of organic farming since 1995. According to the traditional management acreages are mowed two times per year followed by grazing and solid manure fertilisation in autumn. The effect of management intensity (two, three, four cuts per year and adapted fertilisation) was tested for coverage of most frequent species: Trisetum flavescens, Dactylis glomerata, Poa pratensis, Poa trivialis, Festuca pratensis, Lolium perenne, Trifolium repens, Taraxacum officinale agg., Carum carvi and Achillea millefolium. Our main interest was to...
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops.
Ano: 2011 URL: http://orgprints.org/19487/1/Vegetation_change_of_mountainous_hay__meadows_to_intensified_management_regime_in_organic_farming.pdf
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Reconciling scientific approaches for organic farming research: Part II - Effects of manure types and white clover (Trifolium repens) cultivars on the productivity of grass-clover mixtures grown on a humid sandy soil Organic Eprints
Baars, Ton.
This Part describes the agronomic results of the multidisciplinary grassland study. This project concerned the effects of clover varieties and spring applications of animal manure on the yield of grass-white clover mixtures on a moist sandy soil (1993-1996). To be aware of the context of the findings in a multidisciplinary approach, attention was paid to: chemical soil fertility, damage to clover by slugs and soil borne nematodes. To increase the understanding of soil fertility, earthworm dynamics were also measured. At the end of the period the botanical composition of all plots was assessed. Factors measured besides total yield and clover yield were N, P and K yield. It was found that these ‘context ’-measurements were important for the overall...
Tipo: Thesis Palavras-chave: Pasture and forage crops.
Ano: 2002 URL: http://orgprints.org/2416/1/g38_h2_1.pdf
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Sulphur supply: a limiting factor in organic roughage-based livestock production? Organic Eprints
Bakken, Anne Kjersti; Hansen, Sissel; Strøm, Turid; Steinshamn, Håvard.
Abstract - The herbage sulphur (S) content on 28 organic farms was monitored in order to evaluate the S supply for plants and ruminants in organic livestock production. The S content and the protein content were generally low. S fertilisation improved the yield and protein content of red clover only when the initial S supply was very low. Increasing S application rates did not increase the S content of red clover above a certain level that depended on other soil and environmental factors. Instead of an increase in the shoots with increasing S supply, there was an accumulation of S in the roots.
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Farm nutrient management; Feeding and growth.
Ano: 2006 URL: http://orgprints.org/7369/1/hansen_et_al_organic_congres_may_2006.doc
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Produksjon og utnytting av gjenvekst ved høge avdråttsnivå Organic Eprints
Bakken, Anne Kjersti; Steinshamn, Håvard.
Kyr med høg avdrått må få energirikt grovfôr frå eng som er tidleg og hyppig slått, og der gjenvekstar utgjer ein stor del av årsavlinga. Mellom vårvekst og gjenvekst vil det vere variasjon i proteininnhald og fiberkvalitet. Det trengst meir kunnskap om korleis ein kan balansere dei ulike kvalitetane i ei målretta fôring.
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Dairy cattle; Feeding and growth.
Ano: 2010 URL: http://orgprints.org/16850/1/Bakken_Steinshamn_Produksjon_og_utnytting_av_gjenvekst_2010.pdf
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Screening Non Legume Species for Use as Cover Crop in Mixtures Organic Eprints
Baresel, Jörg Peter; Fischer, V.; van Hilten, S.; Charrois, A.; Köckeis, M..
Several non-legume species have been tested for their suitability as cover crops, especially as constituent of mixtures with common vetch (Vicia sativa) and subterranean clover (Trifolium subterrananeum) in field trials performed in southern Germany from 2013 to 2016. We present selected results. The highest amounts of biomass were produced by Glebionis segetum, Anethum graveolens and Borago officinalis, which were also able to compete with subterranean clover and common vetch. All other tested species produced less biomass than the two legume species and were outcompeted in mixtures.
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Crop combinations and interactions; Weed management.
Ano: 2017 URL: http://orgprints.org/31536/1/Screening%20Non%20Legume%20Species%20for%20Use%20as%20Cover%20Crop%20in.pdf
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Modellvorhaben zum Einsatz verschiedener gefährdeter Rinderrassen in extensiven Beweidungssystemen des Feuchtgrünlandes unter den Rahmenbedingungen der Agrarreform und einer innovativen, nachhaltigen Wirtschaftsweise im Biosphärenreservat Flusslandschaft Elbe Organic Eprints
Beisiegel, Jürgen; Rahmann, Gerold.
Ziel des Projektes ist die Überprüfung der Integration und Akzeptanz alter gefährdeter Rinderrassen in landwirtschaftlichen Betriebe zur Umsetzung von Naturschutzzielen.
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Beef cattle; Health and welfare; Environmental aspects.
Ano: 2011 URL: http://orgprints.org/19872/1/609_OEL_Weidebeef_Rahmann_Tagungsband.pdf
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Healthy Grassland Soils Pocketbook Organic Eprints
Bennet, Amanda.
This pocketbook, based on work conducted by SRUC, Newcastle University and ADAS, aims develop an industry-recognised method to assessing grassland soils and to provide guidance on soil biology. It contains easy-to-follow guidelines and effective visuals on assessing, maintaining and improving soil structure. This covers surface assessment, soil extraction, soil type, how to identify soil structure and guidance on how to score to the state of the soil with photographs showing soil structure types. It also covers management options for poor soil structures including surface slitting and sward lifting and ploughing, and preventative measures, such preventing compaction, soil testing, maintaining field drainage and improvements for the biological activity...
Tipo: Practice tool Palavras-chave: Pasture and forage crops; Soil quality; Soil.
Ano: 2015 URL: http://orgprints.org/32537/1/Healthy%20grassland%20soils%20pocketbook.png
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Produção de metano entérico em pastagens tropicais. Organic Eprints
Berchielli, Telma Teresinha; Messana, Juliana Duarte; Canesin, Roberta Carrilho.
Na presente revisão, buscou-se apresentar os principais impactos ambientais causados pela pecuária, sobretudo, em relação às emissões de gases efeito estufa (GEE). Além disso, buscou-se apresentar possíveis formas de mitigar essas externalidades. A criação de bovinos, no Brasil, acontece de forma extensiva, muitas vezes em áreas com pastagem degradada e, portanto, de baixa produtividade. Isso possibilita à atividade uma oportunidade de redução do impacto causado ao meio ambiente, uma vez que ações tomadas, no sentido de melhorar o rendimento animal, devem resultar em um menor consumo de recursos naturais (terra e água) e maior eficiência do sistema digestivo animal. Os principais problemas apontados pelos pesquisadores, no que tange à pecuária extensiva,...
Tipo: Journal paper Palavras-chave: Pasture and forage crops; Production systems; Crop husbandry.
Ano: 2012 URL: http://orgprints.org/29086/1/Berchielli_Produ%C3%A7%C3%A3o.pdf
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Nitrate leaching from organic farming systems with rotational grass-clover and arable crops Organic Eprints
Berntsen, J.; Grant, R.; Olesen, J.E.; Kristensen, I.S.; Vinther, F.P.; Mølgaard, J.P.; Petersen, B.M..
Organic farming is considered an effective mean of reducing nitrogen losses compared with more intensive conventional farming systems. However, under certain conditions organic farming may also be susceptible to high nitrogen (N) losses. This is especially the case for organic dairy farms on sandy soils that use grazed grass-clover in rotation with cereals, which may lead to high rates of nitrate leaching. A study was conducted on two commercial organic farms on sand and loamy sand soils. On each farm a three year old grass-clover field was selected. Half of the field was ploughed the first year and the other half was ploughed the next year. Spring barley (Hordeum vulgare L.) was sown after the spring ploughing. Measurements showed a low N leaching...
Tipo: Journal paper Palavras-chave: Nutrient turnover; Pasture and forage crops; Farming Systems; Soil biology; Soil quality; Air and water emissions.
Ano: 2006 URL: http://orgprints.org/4642/1/4642.doc
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Simulating leaching losses following incorporation of grass and grass-clover leys Organic Eprints
Berntsen, Jørgen; Petersen, B.M.; Pedersen, A.; Jensen, L.S..
Dynamic simulation models can be useful tools for predicting the residual effect of leys, but only if they have been calibrated and validated appropriately for this particular situation. The BIOMOD project has aimed at expanding, calibrating and validating two Danish dynamic simulation models, namely FASSET and Daisy, for a range of crop rotational situations occurring in organic farming. Here we report on the calibration results for an extensive experiment with residual effect and nitrate leaching following grass-clover leys.
Tipo: Journal paper Palavras-chave: Nutrient turnover; Pasture and forage crops; Soil; Soil quality.
Ano: 2003 URL: http://orgprints.org/4635/1/4635.PDF
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Zoneamento agroclimático da palma forrageira (Opuntia sp.) para o estado da Paraíba. Organic Eprints
Bezerra, Bergson G.; Araújo, Jucilene S.; Pereira, Daniel D.; Laurentino, Gustavo Q.; Silva, Lindenberg L. da.
A palma forrageira tornou-se, ao longo dos anos, uma importante alternativa forrageira no semiárido brasileiro (SAB) principalmente em longos períodos de estiagens. Apesar de sua magnitude para a agropecuária, seu cultivo tem dispensando tratos culturais básicos e embasamento técnico-científico quanto às suas exigências climáticas. Assim, o principal objetivo deste estudo foi elaborar o zoneamento agroclimático da cultura da palma forrageira (Opuntia sp.) para o estado da Paraíba. O zoneamento agroclimático da palma forrageira foi elaborado com base nos indicadores climáticos delineados na literatura e nos dados climatológicos de precipitação e temperatura (média, máxima e mínima) de 97 localidades do estado da Paraíba. De acordo com os resultados obtidos,...
Tipo: Journal paper Palavras-chave: Pasture and forage crops; Production systems; Crop husbandry.
Ano: 2014 URL: http://orgprints.org/29067/1/Bezerra_zoneamento.pdf
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Optimal length of the grass-clover period in crop rotations: results of a 9-year field experiment under organic conditions Organic Eprints
Boer, H. de; Eekeren, N. van; Pinxterhuis, Ina; Stienezen, M.W.J..
A nine year crop rotation experiment was carried out in the Netherlands from 2002 through 2010 to (1) determine the optimal length of the grass-clover (mixture) and maize period in crop rotations and (2) to determine which crops should receive slurry application with priority in case the availability of cattle slurry is limited. The results show that dry matter yield decreased for all treatments over the experimental period, due to a decrease in plant-available N (from N fixation by the clover, applied slurry and mineralization of soil N). The relative yield increase (increase relative to the negative trend) due to slurry application was largest when all crops received slurry application, and the effects of slurry application increased over time.
Tipo: Report Palavras-chave: Pasture and forage crops; Farm nutrient management.
Ano: 2012 URL: http://orgprints.org/26233/1/2702.pdf
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Strategien zur Regulierung von Wurzelunkräutern im ökologischen Landbau - Situationsanalyse und Überprüfung von Ansätzen zur Regulierung der Ampfer-Arten Organic Eprints
Böhm, Herwart; Finze, Jana.
Zielsetzung des Projektes war die Analyse der Ist-Situation auf ökologisch wirtschaftenden Betrieben hinsichtlich des Ampferbesatzes und der Regulierungsstrategien sowie die Ermittlung des Forschungsbedarfes mit einhergehender Evaluierung bestehender Regulierungsstrategien sowie der Überprüfung neuer Regulierungsansätze. Die Umfrage unter 156 Öko-Landwirten zeigt, dass 80 % der Betriebe Probleme mit Ampfer haben. Durchschnittlich hat jeder Betrieb auf einem Fünftel seiner als Grünland genutzten Fläche Probleme mit Ampfer. Direkte Regulierungsmaßnahmen werden aus Arbeits- und Kostengründen kaum angewendet. Kenntnisse über vorbeugende Maßnahmen wie z.B. Beweidungsmanagement liegen unzureichend vor. In eigenen Versuche wurden diese Fragestellungen deshalb...
Tipo: Report Palavras-chave: Pasture and forage crops; Weed management.
Ano: 2003 URL: http://orgprints.org/6167/1/6167%2D02OE055%2D1%2Dfal%2Dboehm%2D2003%2Dampfer.pdf
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Verbesserung der Heubergetechnik Organic Eprints
Bohne, Björn; Hensel, Oliver.
Die Trocknung von Grüngut ist die die älteste Methode um den Haustieren während der vegetationslosen Wintermonate eine Futterkonserve in der Stallhaltung vorzulegen. Diese Konvervierungsart wurde im Laufe der Zeit als Heubereitung definiert. Grundlegende Voraussetzungen für den Erfolg der Heubereitung ist eine ausreichend lange Schönwetterperiode um den notwendigen Wasserentzug zu gewährleisten und eine schonende Grüngutbehandlung um das Abbröckeln von Pflanzenteilen zu minimieren. Dies sind auch gleichzeitig die Herausforderungen, welche in der Vergangenheit dazu geführt haben, dass der Anteil der Heubereitung an der Grundfutterproduktion stetig zu Gunsten der im Feld einfacher durchzuführenden Silagebereitung zurückgegangen ist. Seit geraumer Zeit ist...
Tipo: Report Palavras-chave: Pasture and forage crops; Buildings and machinery.
Ano: 2016 URL: http://orgprints.org/30792/1/30792-12NA033-uni-kassel-hensel-2016-heubergetechnik.pdf
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