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| Registros recuperados: 8.082 | |
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| Colomb, B.; Desclaux, D.; Debaeke, P.; Justes, E.; Burger, P.. |
| Low-input production schemes adopted in organic or conventional farms require crop varieties that combine good product quality and high yield stability under non optimal environmental conditions (Gooding et al., 1999). These traits are not yet found among the durum wheat genotypes available in France. Consequently the cultivation of this crop is hardly successful in stockless organic farms in southern France, which are characterised by very low nitrogen resources. Some hopes emerged with the identification of new durum wheat pure lines with a high grain protein content in breeding experiments conducted near Montpellier in 2001 and 2002. The aim of the present work was to confirm and elucidate the origin of the enhanced protein performance of these new... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation Farm nutrient management. |
| Ano: 2004 |
URL: http://orgprints.org/6491/1/colomb.pdf |
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| Huber, Julia; Siegel, Thomas; Schmid, Harald; Hülsbergen, Kurt-Jürgen. |
| The increasing demand for bioenergy and the combination of agricultural production with conservation has made agroforestry to a sustainable land-management option. Aboveground woody biomass plays a decisive role considering the economic value of the agroforestry systems as well as the carbon storage. With the objective to study aboveground woody biomass production of agroforestry systems with different cultivation methods (organic/ integrated), short rotation plantations of different tree species were established 2009 and coppiced in 2012. The studied tree species were black alder (Alnus glutinosa), black locust (Robinia pseudoacacia), poplar “Max 3”, (Populus maximowiczii x Populus nigra) and willow “Inger” (Salix triandra x Salix viminalis). At the end... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Crop husbandry; Biodiversity and ecosystem services. |
| Ano: 2014 |
URL: http://orgprints.org/24048/1/24048_MM.pdf |
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| Tamm, L.; Smit, B.; Hospers, M.; Jannsens, B.; Burma, J.; Mølgaard, J.P.; Lærke, P.E.; Hansen, H.H.; Bertrand, C.; Lambion, J.; Finckh, M.; Schüler, C.; Lammerts van Bueren, E.; Ruissen, T.; Solberg, S.; Speiser, B.; S., Philip; M., Wolfe; Leifert, C. |
| Problemstellung/Ziele Die Kraut- und Knollenfäule (Phytophthora infestans) ist die Krankheit, die im biologischen (aber auch konventionellen) Kartoffelanbau in Europa die größten Probleme verursacht. Unter günstigen klimatischen Bedingungen breitet sich die Krankheit sehr rasch aus und kann große Ertragsausfälle verursachen. Innerhalb von Europa variiert der durch P. infestans verursachte wirtschaftliche Schaden stark zwischen den Regionen. Dies hängt von verschiedenen Faktoren ab, aber in biologisch bewirtschafteten Anbausystemen immt man an, dass die klimatischen Bedingungen, die verwendeten Sorten sowie die agronomischen Maßnahmen wie Bodenbearbeitung oder die Verwendung von Pflanzenschutzmitteln eine wichtige Rolle spielen. Die Reduktion oder das... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Root crops Crop health; Quality; Protection. |
| Ano: 2003 |
URL: http://orgprints.org/1918/1/tamm%2Det%2Dal%2D2003%2Dbio%2Dartoffel%2Deuropa%2Dinventar.pdf |
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| Weissengruber, Lina; Friedel, Jürgen K.; Möller, Kurt. |
| In order to assess the risk of the use of recycled phosphorus (P) fertilisers for organic farming, the potential accumulation of heavy metals in soil after a 200-year fertilizer application equivalent to 11 kg P ha-1 yr-1 was calculated in a mass balance approach. Both fertilizers currently allowed in organic farming and recycled P fertilizers were regarded. For heavy metals, four scenarios with two soil pH levels (pH 5 and pH 7) and two precipitation excess levels (F 0.1 and F 0.3 m yr-1) were calculated. Recycled P fertilizers like struvite, meat- and bone meal, ashes, sewage sludge and digestate, as well as phosphate rock and triple superphosphate had a higher P content and a lower heavy metal-to-P ratio than composts. Consequently, compost application... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Composting and manuring; Nutrient turnover. |
| Ano: 2017 |
URL: http://orgprints.org/31898/1/Absch%C3%A4tzung%20des%20Risikos%20einer%20Schwermetall-Akkumulation.pdf |
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| Ruch, Beate; Kleeberg, Hubertus. |
| Bisherige Untersuchungen zeigen, dass Halbwertszeiten von Azadirachtin A auf Blättern bzw. Ernteprodukten in der Größenordnung von einem bis drei Tagen liegen. Unter Berücksichtigung der Ausgangskonzentrationen von Azadirachtin A auf/in den Pflanzen und den untoxischen Eigenschaften des Pflanzenschutzmittles NeemAzal-T/S sowie seines Wirkstoffes NeemAzal sollten Wartezeiten etwa 10 Tage betragen, um Rückstände unterhalb der analytischen Bestimmungsgrenze und unter den nach der Diätverordnung zulässigen Höchstmengen zu erwarten. Das hier dargestellte grobe Konzept enthält Vereinfachungen, die jedoch im Allgemeinen die Rückstandsbelastung überschätzen sollten. Bis zur Festlegung von Höchstmengen und Wartezeiten könnte das vorgestellte Verfahren eine... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Specific methods. |
| Ano: 2001 |
URL: http://orgprints.org/1991/1/ruch%2Db%2D2001%2Drueckstandsverhalten%2Dneem.pdf |
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| Fricke, Thomas; Wachendorf, Michael. |
| To describe spatial heterogeneity of crop properties, non-destructive methods can be helpful in capturing whole field data sets. This paper shows examples of different sensor methods that have been evaluated to measure biomass and legume content in legume-grass mixtures. Biomass has been estimated using vegetation indices (NDVI, SR, EVI and REIP) calculated from spectral reflectance measurements in greenhouse experiments. The index REIP has been used to identify species composition as well. Furthermore, biomass values can be derived from ultra sonic measurements of sward heights. To quantify legume contents in short term leys, which is important for forage quality and nitrogen flows, image analysis tools have been used in different experi-ments with good... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops Cereals; Pulses and oilseeds Crop combinations and interactions. |
| Ano: 2007 |
URL: http://orgprints.org/9537/1/9537_Fricke_Poster.pdf |
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| Nielsen, Otto; Philipsen, Holger. |
| The abundance of entomopathogenic nematodes and soil dwelling stages of plant specific insects was studied in an organic cropping system for two years. In addition was the survival of an inoculated strain of Steinernema feltiae studied. The abundance of naturally occurring entomopathogenic nematodes was in general at a low level throughout the observation period (0-26 % positive samples). Inoculated S. feltiae established well when pea was grown in the same or in the following year whereas the nematodes were less able or unable to establish in the other crops (cabbage, carrots, barley, alfalfa/clover). The successful establishment of nematodes, and the abundance in general, correlated well with the presence of plant specific insects. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems. |
| Ano: 2005 |
URL: http://orgprints.org/1612/1/Proceeding.doc |
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| Lohaus, Katharina; Vidal, Stefan. |
| The reorganisation from conventional to organic farming practice on a farm located in Northern Germany was accompanied in a long term monitoring to survey the abun-dances of cereal aphids and their natural enemies in winter wheat. The research project focuses on the interactions of host plant and aphids in ecological crop rotation systems differing in their amount of legumes (nitrogen intensive, nitrogen extensive system). Additionally manure treated winter wheat plots established in both ecological crop rota-tion systems were investigated. For comparison the abundance of aphids in conventional farming systems with winter wheat fields nearby were also monitored. The results indi-cate that within the triannual investigation period, aphids significantly... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/9703/1/9703_Lohaus_Vortrag.pdf |
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| Ertem, A.; Menon, M.K.; Bernet, T.. |
| The global Organic market for food has expanded to upwards of US$ 60 billion in consumer purchases annually. However, the market is concentrated in only a few countries, mostly in Europe and North America, and the global market share is far below 1%. We need further developments if the aspirations of the Organic World to provide solutions to global challenges are to be realized. The market and the attractiveness of Organic products on the market are changing, so that we need to adapt. The positioning of Organic products in the various markets, the responses of the Organic Sector to upcoming concerns, the transparency of processes and products, and the reporting of impacts are issues to which marketers need to be up to date. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general. |
| Ano: 2014 |
URL: http://orgprints.org/28083/1/28083.pdf |
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| Olabiyi, T.I.; Okusanya, A.O.; Harris, P.J.C.. |
| A study in 2005-2006 assessed the opportunities for and constraints to Nigeria accessing the international organic market. The study comprised semi-structured interviews with agricultural produce exporters and government officials in Nigeria, and with representatives of certification agencies in the UK, and focus group discussions with farmers’ groups in Ogun State, Nigeria. Fresh and canned pineapple and mango, ginger, and herbs and spices were ranked as having very high potential for Nigeria in the international market. Fruit juice concentrates, palm oil, cashew nuts, honey and cotton were among those products classified as high potential. Constraints identified included lack of awareness of organic farming techniques, high certification costs, lack of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general. |
| Ano: 2008 |
URL: http://orgprints.org/11713/1/Olabiyi_11713_ed.doc |
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| Gredler, B.; Sargolzaei, M.; Bapst, B.; Bieber, A.; Simianer, H.; Seefried, F.R.. |
| Imputation of genotypes can be used to reduce the implementation costs of genomic selection. In this study, we evaluated the accuracy of genotype imputation from Illumina 54k to Illumina High Density (HD) in Brown Swiss cattle. Genotype data comprised 6,106 54k and 880 HD genotyped bulls and cows of Brown Swiss and Original Braunvieh cattle. Genotype data was checked for parentage conflicts and SNP were excluded if MAF was below 0.5% and SNP call rate was lower than 90%. The final data set included 39,004 SNP for the 54k and 627,306 SNP for the HD chip. HD genotypes of animals born between 2004 and 2008 (n=365) were masked to mimic animals genotyped with the 54k chip. Methods used for imputation were FImpute and Findhap V2. Both programs use pedigree... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics. |
| Ano: 2013 |
URL: http://orgprints.org/36412/1/Gredler-etal-2013_Plant_Animal_Genome_XXI_Congress_SanDiego_USA.pdf |
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| Oltmanns, Meike; Raupp, Joachim. |
| Ökologische Betriebe ohne eigene Viehhaltung müssen eine Düngungsalternative für Stallmist finden. Im Gemüse- oder Feldgemüseanbau sind dies meist geschrotete, großkörnige Leguminosensamen. Während die Wirkungen des Stallmistes in vielen Feldversuchen bereits belegt worden sind, stehen entsprechende Untersuchungen mit Leguminosenschroten noch aus. Daher werden seit 1996 in einem Feldversuch die Langzeit-Effekte von pflanzlichen organischen Düngern und Stallmist sowie Mineraldüngung (bei gleicher Stickstoff-Aufwandmenge, 100 kg ha-1 N) verglichen. Ergebnisse in 2005: Der Ertrag der marktfähigen Kartoffeln lag bei den Düngungsarten Stallmist und Ackerbohnenschrot mit ca. 230 dt ha-1 gleich hoch. Der Kaliumgehalt der mit Ackerbohnenschrot gedüngten... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Post harvest management and techniques; Root crops; Composting and manuring. |
| Ano: 2006 |
URL: http://orgprints.org/9184/1/pfl06kartE.pdf |
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| Registros recuperados: 8.082 | |
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