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| Registros recuperados: 31 | |
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| Fuchs, Jacques G.; Bruns, Christian; Mäder, Paul; Schmidt, Harald; Thürig, Barbara; Wilbois, Klaus-Peter; Tamm, Lucius. |
| Fertile soils are highly important for arable farming. To maintain soil fertility, crop rotation including legumes is applied, particularly in stockless farms. Yet, many commercial farms report yield reductions for legumes. The aim of the present study was to evaluate whether the causes for the observed soil fatigue can be narrowed down by a bioassay (modified differential diagnosis according to Bouhot) and whether this bioassay could be a useful tool to predict the suitability of a field to grow legumes. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality Crop combinations and interactions Crop husbandry Crop health; Quality; Protection. |
| Ano: 2013 |
URL: http://orgprints.org/21452/1/21452_Fuchs.pdf |
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| Schmidt, Harald. |
| Von 2007 bis 2008 wurden auf dreißig Feldern von fünfzehn Ökobetrieben mit reduzierter Bodenbearbeitung in drei Bodenschichten verschiedene Parameter untersucht. Acht Betriebe haben die Bodenbearbeitungstiefe deutlich reduziert, die anderen sieben Betriebe lockern den Boden krumentief mit nicht wendenden Verfahren. Im Durchschnitt wurde eine Anreicherung von organischer Substanz und von Nährstoffen in der Oberkrume festgestellt. Der Unterschied im Gehalt an organischer Substanz zwischen Ober- und Unterkrume war mit der Dauer des Bodenbearbeitungssystems positiv korreliert. Außerdem lag das Porenvolumen in der Oberkrume deutlich über dem der Unterkrume, stark korrelierte mit dem Gehalt an organischer Substanz. Die Ergebnisse bestätigen die Beobachtungen der... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil tillage; Soil. |
| Ano: 2011 |
URL: http://orgprints.org/17466/3/Schmidt_17466.pdf |
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| Schmidt, Harald; Bruns, Christian; Wilbois, Klaus-Peter. |
| Auf 32 Ökobetrieben in Deutschland wurden von 2009 bis 2012 insgesamt 128 Felder untersucht. Ziel war es wesentliche Faktoren für den Boden-Eindringwiderstand zu identifizieren und die Beziehung zwischen Eindringwiderstands-Parametern und dem Ertrag von Wintergetreide zu prüfen. Auf ca. einem Viertel der untersuchten Felder wurden häufig stark verdichtete Bodenschichten gefunden. Korrelationsanalysen ergaben als wesentliche Faktoren eines großen Eindringwiderstands im Untergrund einen hohen Sandanteil, Flachgründigkeit von Böden, warme Temperaturen, niedrige Kleegras- und Winterfruchtanteile sowie hohe Anteile an Kartoffeln in der Fruchtfolge, große Pflugtiefen und hohe Schleppergewichte. Partielle Korrelationsanalysen ergaben negative Beziehungen zwischen... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality Cereals; Pulses and oilseeds Crop husbandry Soil. |
| Ano: 2015 |
URL: http://orgprints.org/27146/1/27146_schmidt.pdf |
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| Fuchs, Jacques G.; Thürig, Barbara; Brandhuber, Robert; Bruns, Christian; Finckh, Maria R.; Fließbach, Andreas; Mäder, Paul; Schmidt, Harald; Vogt-Kaute, Werner; Wilbois, Klaus-Peter; Lucius, Tamm. |
| The aim of the study was to establish a diagnostic tool to narrow down the causes for pea yield depressions. A differential two-level diagnostic test system was established under controlled conditions usingpeas (Pisum sativum L.) as test plants. Soils from 22 organically managed sites with unexplained moderate to high pea yield losses were tested in level 1 diagnostics (y-irradiation to eliminate potentiallyharmful organisms, nutrient additions to compensate for potential nutrient deficiencies or activated charcoal amendment to bind and thereby to immobilize potentially phytotoxic compounds). Results showedthat organisms harmful to the test plant were the primary cause of limited germination and growth inmost of the sampled soils, whereas a positive effect... |
| Tipo: Journal paper |
Palavras-chave: Composting and manuring; Soil tillage. |
| Ano: 2014 |
URL: http://orgprints.org/25617/1/Fuchs_2014.pdf |
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| Schmidt, Harald; Wild, Melanie. |
| With the aim of identifying key factors for field pea yield, 52 fields on 21 organic farms were evaluated from 2009 to 2011. Criteria for evaluation were soil variables, crop data, management and field history. The average pea yield of all farms was 2.1 t/ha including 5 fields that did not harvest due to inadequate growth and/or high weed pressure. Based on measurements in three control points per field, yield was 65 % higher when harvesting by hand. The main causes were heterogeneous crops and high yield losses through combine harvesting. According to multiple linear regression analysis of yields in control points, factors leading to high pea yield included deep soil, high available phosphorous content, low clay content and longer intervals between pea... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds. |
| Ano: 2013 |
URL: http://orgprints.org/21409/1/21409_schmidt.pdf |
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| Schmidt, Harald; Langanky, Lucas. |
| Die Daten von 114 ökologisch und konventionell bewirtschafteten Soja-Schlägen wurden zwischen 2015 und 2017 hinsichtlich ackerbaulicher Fragen analysiert. Der durchschnittliche Sojaertrag aller Betriebe betrug an den Messpunkten (Handernte) 4,0 t / ha und 2,9 t / ha vom gesamten Schlag (Mähdrusch). Es konnten keine Ertragsunterschiede zwischen ökologischer und konventioneller Bewirtschaftung festgestellt werden. Nach einer multiplen linearen Regressionsanalyse der Erträge an den Messpunkten waren die Hauptfaktoren für den Sojaertrag Wasserversorgung, Temperatur in der Anfangsphase, Sorte und Unkrautdeckungsgrad. Wichtige Faktoren des Unkrautdeckungsgrads auf den Öko-Schlägen waren die Homogenität und die Pflanzendichte des Bestandes, gefolgt von Faktoren... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Weed management. |
| Ano: 2019 |
URL: http://orgprints.org/36114/1/Beitrag_186_final_a.pdf |
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| Böhm, Herwart; Bohne, Björn; Brandhuber, Robert; Bruns, Christian; Demmel, Markus; Finckh, Maria R.; Fuchs, Jacques G.; Gronle, Annkathrin; Hensel, Oliver; Lux, Guido; Möller, Detlev; Schmidt, Harald; Schmidtke, Knut; Spiegel, Ann-Kathrin; Vogt-Kaute, Werner; Wilbois, Klaus-Peter; Wild, Melanie; Wolf, Daniel. |
| The German Federal programme on organic farming and other forms of sustainable agriculture developed practical cultivation strategies with the aim of improving soil fertility and plant nutrition. During the five-year project, some new practical knowledge was gained. These findings are listed in the booklet. Reading this guideline should encourage farmers to intensify the cultivation of grain legumes. |
| Tipo: Practice tool |
Palavras-chave: Soil. |
| Ano: 2014 |
URL: http://orgprints.org/31992/1/1654-koernerleguminosen.pdf |
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| Berner, Alfred; Böhm, Herwart; Brandhuber, Robert; Braun, Josef; Brede, Uwe; Colling-von Roesgen, Jean-Louis; Demmel, Markus; Dierauer, Hansueli; Doppler, Georg; Ewald, Bernd; Fisel, Thomas; Fließbach, Andreas; Fuchs, Jacques; Gattinger, Andreas; Häberli, Hansueli; Heß, Jürgen; Hülsbergen, Kurt-Jürgen; Köchli, Martin; Kolbe, Hartmut; Koller, Martin; Mäder, Paul; Müller, Adrian; Neessen, Peter; Patzel, Nikola; Pfiffner, Lukas; Schmidt, Harald; Weller, Stefan; Wild, Melanie. |
| Die Broschüre beleuchtet die Bodenfruchtbarkeit aus verschiedenen wissenschaftlichen und bäuerlichen Blickwinkeln. Die Informationen wollen praktische Beobachtungen der Landwirte ergänzen und dazu anregen, die Beziehung zum Boden zu überdenken und eine wirklich nachhaltige Bodenkultur zu praktizieren. |
| Tipo: Book |
Palavras-chave: Soil. |
| Ano: 2012 |
URL: http://orgprints.org/21814/1/berner-etal-2012-mb-1576-bodenfruchtbarkeit.pdf |
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| Berner, Alfred; Dierauer, Hansueli; Fuchs, Jacques; Fliessbach, Andreas; Koller, Martin; Mäder, Paul; Müller, Adrian; Pfiffner, Lukas; Patzel, Nikola; Böhm, Herwart; Brandhuber, Robert; Braun, Josef; Brede, Uwe; Colling-von Roesgen, Jean-Louis; Demmel, Markus; Doppler, Georg; Ewald, Bernd; Fisel, Thomas; Gantlett, Richard; Häberli, Hansueli; Hess, Jürgen; Hülsbergen, Kurt-Jürgen; Köchli, Martin; Kolbe, Hartmut; Neessen, Peter; Patzel, Nikola; Schmidt, Harald; Weller, Stefan; Tolhurst, Iain; Wild, Melanie. |
| La fertilità del suolo è riconosciuta come valore fondante sin dai pionieri dell'agricoltura biologica ma, ancor oggi, alla conservazione di un suolo fertile non viene attribuita abbastanza attenzione. Eppure l'agricoltura biologica dipende da una buona e naturale fertilità del suolo. |
| Tipo: Book |
Palavras-chave: Soil. |
| Ano: 2018 |
URL: http://orgprints.org/33065/1/I%20Fondamenti%20della%20fertilit%C3%A0%20del%20terreno%20.pdf |
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| Terhoeven-Urselmans, Thomas; Ilein, Florian; Schmidt, Harald; Ludwig, Bernard. |
| Near-infrared reflectance spectroscopy is known for its inexpensiveness, rapidity and accuracy and may become a useful tool for the assessment of soil fertility. The objec-tives of this study were (i) to evaluate the ability of near-infrared reflectance spectros-copy (NIRS) to predict several soil chemical and biological characteristics of organi-cally managed arable land and (ii) to test if different sample pre-treatments yield comparable results. Spectra of the VIS-NIR region (400-2500 nm) from 56 either fresh or pre-treated (quick-freezing, freeze-drying and grinding) soil samples were recorded. A modified partial least square regression method and cross-validation were used to develop an equation over the whole spectrum (1st to 3rd derivation). Soil... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Soil quality. |
| Ano: 2007 |
URL: http://orgprints.org/9403/1/9403_Terhoeven%2DUrselmans_Vortrag.pdf |
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| Paulsen, Hans Marten; Frank, Helmut; Hülsbergen, Kurt-Jürgen; Rahmann, Gerold; Schmidt, Harald; Warnecke, Sylvia. |
| Sources of greenhouse gas (GHG) emission of milk production were analysed on organic and conventional dairy farms from cradle to farm gate and resulted in a mean of ca. 1 kg CO2 eq kg ECM-1 independent of the farm system. When calculated according to dry matter intake of the cows, mean percentages of GHG emissions from enteric fermentation on organic or conventional farms were 31 or 42 % from the complete product related emissions from milk production from cradle to farm gate, respectively. When feed quality parameters were considered in calculation, enteric methane production increased considerably with higher fibre contents in feedstuffs. This was especially important at lower milk yields. On the 44 farms that were analysed, minimal potential GHG... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Animal husbandry; Feeding and growth; Air and water emissions; Environmental aspects. |
| Ano: 2015 |
URL: http://orgprints.org/27127/1/27127_paulsen.pdf |
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| Böhm, Herwart; Brandhuber, Robert; Bruns, Christian; Demmel, Markus; Finckh, Maria R.; Fuchs, Jacques; Gronle, Annkathrin; Hensel, Oliver; Lux, Guido; Möller, Detlev; Schmidt, Harald; Schmidtke, Knut; Spiegel, Ann-Kathrin; Vogt-Kaute, Werner; Werren, Dagmar; Wilbois, Klaus-Peter; Wild, Melanie; Wolf, Daniel. |
| Der Boden ist eine der wichtigsten Grundlagen unseres Lebens, das erkannte bereits der Bodenkundler und Jurist Friedrich Albert Fallou. Um der großen Bedeutung des Bodens gerecht zu werden, schrieb das „Bundesprogramm Ökologischer Landbau und andere Formen nachhaltiger Landwirtschaft“ (BÖLN*) eine interdisziplinäre Bekanntmachung aus, um praxisnahe Anbaustrategien zu entwickeln, um die Bodenfruchtbarkeit und Pflanzenernährung im Körnerleguminosenanbau zu verbessern. So wurde das interdisziplinäre Bodenfruchtbarkeitsprojekt ins Leben gerufen, in dem Wissenschaft, Beratung und Praxis eng verzahnt waren. Im Laufe des fünfjährigen Projektes kristallisierten sich viele praxisrelevante Erkenntnisse heraus, die nun in der Praxisbroschüre "Körnerleguminosen und... |
| Tipo: Report |
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Composting and manuring Soil tillage Soil. |
| Ano: 2014 |
URL: http://orgprints.org/25326/1/broschuere_bodenfruchtbarkeit_web.pdf |
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| Wolf, Daniel; Möller, Detlev; Schmidt, Harald; Wild, Melanie; Demmel, Markus. |
| A goal in ecological agriculture is to avoid and reduce soil compaction. One possibility is the use of a tire inflation system (TIS). Additionally, sowing equipment with broader working width can be used. Both technologies save working time and fuel. Furthermore, yield could increase due to less soil compaction, especially for peas as field trials show. Data from the field trials and from original farms were used to calculate the profitability for the soil protection technologies. The fuel savings are enough to cover the variable and fix costs of the TIS. The pea surplus is an extra revenue. If working time reduction is additionally valued than in total the farms can gain above 19,-€/ha arable land using a TIS. The most farms have not enough traction power... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Farm economics; Environmental aspects. |
| Ano: 2013 |
URL: http://orgprints.org/21407/1/21407_Wolf.pdf |
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| Hallmann, Johannes; Frankenberg, Andrea; Paffrath, Andreas; Schmidt, Harald. |
| In an attempt to evaluate the occurrence and economic importance of plant-parasitic nematodes in organic farming in Germany, a survey was conducted with the main emphasis on vegetable and cereal production systems. For vegetables, the survey included quantification and identification of plant-parasitic nematodes in soil samples and a questionnaire for growers querying production factors and damage levels. For cereals, the survey focused on quantification and identification of plant-parasitic nematodes in soil and plant samples. Overall, Pratylenchus and Tylenchorhynchus were the most prominent nematode genera under both production systems with an incidence of over 90% of the samples. Meloidogyne was detected in 51% of the samples in both systems. Other... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/15252/1/hallmann%2Detal%2D2007%2DNematology_Vol9_6__869%2D879.pdf |
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| Schmidt, Harald; Leithold, Günter. |
| In a long term trial at the University of Giessen three organic crop rotation systems with and without livestock and four soil tillage treatments (deep plough, 2 x two layer plough and cultivator/rotary harrow) are investigated since 1998. Compared to the other two rotations the stockless rotation without annual green manure showed lower cash crop yields, a negative N-balance and rising weed coverage. The highest cash crop yields were mostly achieved with deep ploughing. Two layer tillage caused N and C accumulation in the upper soil layer (0-15 cm). The weed coverage was highest in these treatments. Especially exclusive tillage with cultivator/rotary harrow resulted in a distinct increase of thistles and high coverage with annual weeds. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry. |
| Ano: 2005 |
URL: http://orgprints.org/3307/1/3307.pdf |
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| Fürnkranz-Tuvshintugs, Michael; Kastelliz, Arno; Pollan, Sieglinde; Schmidt, Harald; Schneeberger, Daniela; Vorderwülbecke, Birgit; Ziebell, Heiko. |
| The leaflet addresses organic farmers who are cultivating green peas. The first article is about crop management from growing to harvesting. Afterwards, an overview about pests, diseases and biological pest control is provided, followed by a specific description of viruses and strategies to reduce nanoviruses. The last topics are aphid attacks and biological aphid control. |
| Tipo: Practice tool |
Palavras-chave: Production systems Cereals; Pulses and oilseeds Crop health; Quality; Protection. |
| Ano: 2016 |
URL: http://orgprints.org/31012/1/gruenerbsenanbau_1610.pdf |
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| Schmidt, Harald; Schüler, Christian; Jörgensen, Rainer Georg. |
| In an on-farm investigation a total of 39 fields of 9 organic managed farms (main crop winter cereals) were sampled in the years 2005 and 2006. Several soil variables were evaluated as well as crop yield, weather data and the field history. Results of statistical analyses (mean, range, standard deviation, correlation and multiple linear regression) are presented. Comparable to physical and chemical variables certain fields were also characterised by soil biological variables. Main factors of cereal N-yield were pre crop, crop rotation, soil type and soil organic matter content (SOM). Soil biological variables had only a low influence. Nitrogen availability was affected by physical and biological soil factors, the weather and management measures as straw... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Crop husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/9581/1/9581_Schmidt_Vortrag.pdf |
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| Finckh, Maria R.; Saeed, M.F.; Schmidt, Harald; Bruns, Christian. |
| A total of 39 organic faba bean and 59 pea seed lots obtained during 2009-2011 from 32 organic farms throughout Germany were assessed for seed-borne fungi. Seed samples collected from the harvested fields grown from these seed lots were also assessed. The focus in the pathogen identification was on the ascochyta blight complex pathogens Ascochyta pisi, Mycosphaerella pinodes and Phoma medicaginis in pea and A. fabae and P. medicaginis in faba bean and on Fusarium spp. Fusarium spp. were found only rarely on peas with 40 of the seed samples and 44 of the harvested samples free of Fusarium spp. and the maximum infestation rate of 12 % in one harvested sample. Eighteen of the sown and 40 of the harvested lots had infestation rates of > 10 % with the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry Crop health; Quality; Protection. |
| Ano: 2013 |
URL: http://orgprints.org/21414/1/21414_finckh.pdf |
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| Heuberger, Heidi; Holzapfel, Christine; Blum, Hanna; Schmidt, Harald. |
| Im zurückliegenden Projekt der Bayerischen Landesanstalt für Landwirtschaft (LfL) und des Fördervereins Ökoplant e.V. wurde der Status-Quo der Unkrautregulierungspraxis im ökologischen Arznei- und Gewürzpflanzenanbau in Bayern ermittelt, wobei ein Fokus auf der Unkrautbekämpfung in der Reihe lag. Eine optimierte Unkrautregulierung zugunsten eines reduzierten Handhackaufwands ist für die Wettbewerbsfähigkeit der heimischen Produzenten von besonderer Bedeutung. Die derzeitigen Diskussionen um die pyrrolizidinalkaloidhaltigen Ackerunkräuter geben einen weiteren aktuellen Anlass, die Unkrautregulierungsstrategien zu optimieren. Mit umfangreichen Befragungen von Ökobetrieben in Bayern und Umgebung, von deutschen Anbauberatern und internationalen... |
| Tipo: Report |
Palavras-chave: Weed management. |
| Ano: 2015 |
URL: http://orgprints.org/29683/1/unkraut_projekt_abschlussbericht.pdf |
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| Registros recuperados: 31 | |
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