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| Registros recuperados: 16 | |
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| Fritz, Jürgen; Athmann, Miriam; Meissner, Georg; Köpke, Ulrich. |
| Nine encoded wine samples from a German long-term field trial on the comparison of different cultivation systems were examined with the image forming methods biocrystallization, capillary dynamolysis and circular chromatography. The images of the encoded samples were i. differentiated into three groups of images with similar form expression, ii. characterised as ‘fresh – aged’ based on a catalogue of reference images, iii. ranked (according to the quality characterization) and iv. assigned to the different cultivation systems (classified). Images gained with samples from integrated farming showed more structures indicating enhanced aging compared with the samples from organic and especially from biodynamic origin. Based on these observations, a correct... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2014 |
URL: http://orgprints.org/24044/1/24044_Fritz%20et%20al_MM.pdf |
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| Morau, A.; Fritz, Jürgen. |
| The biodynamic preparations have been investigated mainly in field trials. By contrast long-term project is to establish a rapid bioassay to evaluate the effectiveness of the horn manure preparation (HMP). The investigated bioassay is based on hydroponically grown cress (Lepidium sativum L.) as an indicator plant. Past results indicated its sensitivity for typical dilutions of HMP in agricultural practice. However one limiting point was the use of non-standard local well water as hydroponic solution. The aim of the present study was to standardise this parameter. A series of 8 experiments was conducted to compare a selected mineral water with well water. The results indicate a highly significant (p<0,001) effect of the HMP on the root´s length was... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Nutrient turnover. |
| Ano: 2017 |
URL: http://orgprints.org/31862/1/Standardisierung%20eines%20Kressetestes%20f%C3%BCr%20das%20biologischdynamische.pdf |
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| Morau, Alain; Fritz, Jürgen. |
| Die ‘Landwirtschaftliche Individualität’ ist der grundlegende Begriff der biologisch-dynamischen Landwirtschaft. Er ist allerdings mit der wissenschaftlichen Diskussion wenig verbunden. Unser Ziel ist es, einige Aspekte davon und seine aktuelle Bedeutung zu erklären. Die 'landwirtschaftliche Individualität’ beschreibt die Gesamtheit von allen Tieren und Pflanzen samt dem Biotop in einem Betrieb. Dabei wird diese Gesamtheit als ein Organismus höherer Art betrachtet. Als Rudolf Steiner diesen Begriff 1924 einführt, werden zur gleichen Zeit ähnliche Ansichten in der Naturwissenschaft entwickelt, insbesondere in der Ökologie mit dem Begriff des Holozöns. Diese ganzheitlichen Ansichten geraten später allerdings in Vergessenheit. Heutzutage gibt der aktuelle... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Research methodology and philosophy. |
| Ano: 2019 |
URL: http://orgprints.org/36110/1/Beitrag_182_final_a.pdf |
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| Fritz, Jürgen. |
| Dr. Jürgen Fritz fasst die aktuellsten Forschungen zur Wirkung biodynamischer Präparate anhand von drei Doktorarbeiten (Juknevičienė 2015, Meissner 2015, Vaitkevičienė 2016) zusammen. Die Häufigkeit signifikanter Pflanzenreaktionen zeigt, dass die Präparate wirken. Sie beeinflussen unter anderem die Verlebendigung von Dünger und Erde, die Verbesserung der Pflanzengesundheit sowie die Verbesserung der Nahrungsmittelqualität. Eine gesteigerte Resilienz der Pflanzen wurde festgestellt. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Crop health; Quality; Protection Germany. |
| Ano: 2018 |
URL: http://orgprints.org/34059/1/Forschung_2018-5.pdf |
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| Fritz, Jürgen; Sikora, Frank. |
| A correlation between generation of new leaves per day of Fatshedera lizei and syn-odical lunar rhythm could be shown in the months of November, December and Janu-ary in the years 1992/1993 and 2005/2006, highly significantly in both years. The maximum of leaf generations was in the year 1992/1993 two days after full moon and in the year 2005/2006 on the day of full moon. The coefficient of determination for this correlation was 56% and 55%. In both years, after February 1st there was no signifi-cant correlation any more between generation of new leaves per day and synodical lunar rhythm. The reasons for the significant correlation between generation of new leaves per day and the synodical lunar rhythm in the months of November, December and January are... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/9578/1/9578_Fritz_Vortrag.pdf |
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| Fritz, Jürgen; Morau, Alain. |
| Wie andere natürliche Biostimulanten wird das biodynamische Hornmistpräparat (HMP) auf landwirtschaftliche Flächen in sehr geringen Mengen ausgebracht. Wegen der schwierigen Reproduzierbarkeit von Forschungsergebnissen in Feldversuchen ist die Entwicklung eines standardisierten spezifischen Labortests für die Bioaktivität des HMP notwendig. Frühere Untersuchungen haben gezeigt, dass ein Biotest mit Gartenkresse (Lepidium sativum L.) signifikant auf HMP reagierte. Ziel des vorliegenden Projektes war, die Wiederholbarkeit und –spezifität dieses Biotests zu ermitteln. Der Biotest bestand aus einer hydroponischen Kultur von Kressekeimlingen in Polyethylen-Beutel, die in einer randomisierten vollständigen Blockanlage (n=20) eingeordnet wurden. Die untersuchten... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2017 |
URL: http://orgprints.org/32104/1/32104-13OE006-uni-kassel-fritz-2017-gartenkresse-hornmistpraeparat.pdf |
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| Fritz, Jürgen; Athmann, Miriam; Köpke, Ulrich. |
| Ten encoded wheat samples from 2008 were taken from a field trial on the comparison of different organic and conventional production systems at Hennef, Germany. The samples were examined with the image forming methods biocrystallization, capillary dynamolysis and circular chromatography. The images of the encoded samples were a) characterised and b) assigned to experimental factors. The factors investigated were i) nitrogen supply, ii) fertilizer type, and iii) horn silica application. The ten samples were assigned 100% correctly to low and high N supply. Within the production methods, samples were assigned correctly to mineral fertilization and manure fertilization. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/21637/1/21637_fritz.pdf |
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| Fritz, Jürgen; Meißner, Georg; Athmann, Miriam; Köpke, Ulrich. |
| 33 encoded grape samples from 2007-2010 were taken from a long-term field trial on the comparison of different organic and conventional production systems at Geisenheim, Germany. The samples were examined with the image forming methods biocrystallization, capillary dynamolysis and circular chromatography. The pictures of the encoded samples were i. differentiated and ii. characterised. The origin of 31 out of 33 encoded samples derived from ‘conventional’, ‘bio-organic’, ‘bio-dynamic‘ production was determined with highest accuracy. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2013 |
URL: http://orgprints.org/21636/1/21636_fritz.pdf |
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| Fritz, Jürgen; Athmann, Miriam; Köpke, Ulrich. |
| By combined application of the three picture forming methods biocrystallization ac-cording to Pfeiffer, capillary dynamolisis according to Wala and circular chromatogra-phy according to Pfeiffer encoded food samples from different production systems have been repeatedly differentiated and identified by Dr. Ursula Graf. In the present study we tested whether by using the combined three picture forming methods en-coded food samples from different production systems could also be differentiated and identified in a different laboratory by another trained person. Ten encoded wheat samples each from 2000 and 2005 harvests were taken from the long-term DOK- trial in Oberwil/Switzerland and examined with the pictomorphological methods. The wheat samples derived... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2007 |
URL: http://orgprints.org/9568/1/9568_Fritz_Poster.pdf |
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| Fritz, Jürgen; Athmann, Miriam; Köpke, Ulrich. |
| Ten encoded rocket samples from 2009 were taken from a field trial on the comparison of nitrogen supply and different organic and conventional production systems at Hennef, Germany. The samples were examined with the image forming methods biocrystallization according to Pfeiffer, capillary dynamolysis according to Wala and circular chromatography according to Pfeiffer. The images of the encoded samples were a) characterised and b) assigned to experimental factors. The factors investigated were i) nitrogen supply, ii) fertilizer type, and iii) horn silica application. The ten samples were assigned 100% correctly to low and high N supply, to mineral fertilization and manure fertilization and to with or without horn silica application. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2011 |
URL: http://orgprints.org/17719/3/Fritz_17719.pdf |
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| Athmann, Miriam; Fritz, Jürgen; Köpke, Ulrich. |
| For spring wheat and rocket lettuce, the influence of light intensity, N supply and fertilizer type on product quality was investigated. The quality assessment, based on morphological parameters, chemical compounds related to growth and differentiation, and image forming methods, is considered as an appropriate approach for Organic Agriculture. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/23860/1/Athmann_FQH_abstract.doc |
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| Morau, Alain; Fritz, Jürgen. |
| Ergebnisse der von 2011-2017 laufenden Versuchsserie mit 76 Einzelexperimenten zur Entwicklung eines standardisierten Biotests für das Hornmistpräparat, die in Kooperation mit der biodynamischen Koordinationsstelle an der Universität Kassel Witzenhausen auf dem Dottenfelderhof durchgeführt wurde. Untersucht wurde, wie sich die Wurzellänge von Kressesamen unter Einfluss des Hornmistpräparats entwickelt. In 28 von 76 Fällen wurde das Wurzelwachstum signifikant beeinflusst. Jedoch ist die Wiederholbarkeit der Ergebnisse über lange Zeitperioden schwierig. Das Potenzial von Laboruntersuchungen zur Wirkweise der biodynamischen Präparate wurde aufgezeigt und sollte weitergeführt werde. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Composting and manuring Crop health; Quality; Protection. |
| Ano: 2018 |
URL: http://orgprints.org/32713/1/Forschung_2018-1.pdf |
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| Fritz, Jürgen; Athmann, Miriam; Meissner, Georg; Köpke, Ulrich. |
| Nine encoded wine samples from a German long-term field trial on the comparison of different cultivation systems were examined with the image forming methods biocrystallization, capillary dynamolysis and circular chromatography. The images of the encoded samples were i. differentiated into three groups of images with similar form expression, ii. characterised as ‘fresh – aged’ based on a catalogue of reference images, iii. ranked (according to the quality characterization) and iv. assigned to the different cultivation systems (classified). Images gained with samples from integrated farming showed more structures indicating enhanced degradation compared with the samples from organic and especially from biodynamic origin. Based on these observations, a... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2015 |
URL: http://orgprints.org/27103/1/27103_fritz.pdf |
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| Registros recuperados: 16 | |
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