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Finger Millet Growth and Nutrient Uptake Is Improved in Intercropping With Pigeon Pea Through “Biofertilization” and “Bioirrigation” Mediated by Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Rhizobacteria Organic Eprints
Saharan, Krishna; Schütz, Lukas; Kahmen, Ansgar; Wiemken, Andres; Boller, Thomas; Mathimaran, Natarajan.
Legume-cereal intercropping is well known in traditional dry land agriculture. Here, we tested whether finger millet, a shallow-rooted cereal, can profit from neighboring pigeon pea, a deep-rooted legume, in the presence of “biofertilization” with arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR), under drought conditions. We conducted a greenhouse experiment using compartmented microcosms. Pigeon pea was grown in a deep compartment with access to a moist substrate layer at the bottom, whereas finger millet was grown in a neighboring shallow compartment, separated by 25-µm nylon mesh, without access to the moist substrate layer. In the presence of a common mycorrhizal network (CMN), with or without PGPR, a drought condition...
Tipo: Journal paper Palavras-chave: Crop combinations and interactions Nutrient turnover Crop health; Quality; Protection.
Ano: 2018 URL: http://orgprints.org/35409/1/Saharan-etal-2018-frontiersEnvSci-vol6-article46-p1-11.pdf
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Arbuscular mycorrhizae in a long-term field trial comparing low-input (organic, biological) and high-input (conventional) farming systems in a crop rotation Organic Eprints
Mäder, Paul; Edenhofer, Stephan; Boller, Thomas; Wiemken, Andres; Niggli, Urs.
Arbuscular mycorrhizal (AM) root colonization was studied in a long-term field trial in which four farming systems currently in use in Switzerland were continuously applied to a randomized set of plots at a single field site from 1978 till 1993. There were two low-input farming systems (organic and bio-dynamic) and two high-input (conventional) farming systems (according to Swiss guidelines of integrated plant production with and without farmyard manure). The systems had an identical 7-year crop rotation and tillage scheme and differed essentially only in the amount and type of fertilizer supplied and in plant protection management. The percentage of root colonization by AM fungi was determined in field samples 2–3 times over the growing season in crops in...
Tipo: Journal paper Palavras-chave: Soil biology.
Ano: 2000 URL: http://orgprints.org/26771/1/Maeder_et_al_2000_BFS.pdf
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Nutrient use efficiency and arbuscular mycorrhizal root colonisation of winter wheat cultivars in different farming systems of the DOK long-term trial Organic Eprints
Hildermann, Isabell; Messmer, Monika; Dubois, David; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
BACKGROUND: For organic farming, cultivars are required with high nutrient use efficiency under nutrient limited conditions. Arbuscular mycorrhizal fungi (AMF) are known to contribute to nutrient uptake under low input conditions. We compared nutrient use efficiency (NUE) of old and modern organically and conventionally bred cultivars in organic and conventional systems and assessed AMF-root colonisation (AMF-RC) in relation to nutrient concentrations. RESULTS: Cultivars and systems had a statistically significant effect on nitrogen (N) and phosphorus (P) concentrations and NUE parameters, whereas no genotype × environment interactions appeared. In contrast to N and P uptake, the NUE parameters were higher under organic than under conventional...
Tipo: Journal paper Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation Crop health; Quality; Protection.
Ano: 2010 URL: http://orgprints.org/17911/1/Hildermann-etal-2010-jsci-food-agric.pdf
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Sorte x Umwelt – Interaktionen von Winterweizen im biologischen Landbau Organic Eprints
Hildermann, Isabell; Messmer, Monika; Kunz, Peter; Pregitzer, Anjana; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
Winterweizensorten für den Biolandbau müssen an sehr variable Umweltbedingungen angepasst sein. Acht biologisch und konventionell gezüchtete Weizensorten wurden 2007 im DOKLangzeitversuch in CH-Therwil in zwei bio-dynamischen Systemen (BIODYN 1 und BIODYN 2) auf Loess und 2008 auf bio-dynamischen Betrieben in Rheinau (SH) (Sand mit hohem Kiesanteil), Fehraltorf (ZH) (sandiger Lehm) und Vielbringen-Worb (BE) (sandiger Lehm) an marginalen Standorten getestet.
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010 URL: http://orgprints.org/26574/1/SGPW_Bulletin23_2010.pdf
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Inoculation of root microorganisms for sustainable wheat-rice and wheat-black gram rotations in India Organic Eprints
Mäder, Paul; Kaiser, Franziska; Adholeya, Alok; Singh, Reena; Uppal, Harminder S.; Sharma, Anil K.; Srivastava, Rashmi; Sahai, Vikram; Aragno, Michel; Wiemken, Andres; Johri, Bhavdish N.; Fried, Padrout M..
The scarcity of non-renewable resources such as soils and fertilizers and the consequences of climate change can dramatically influence the food security of future generations. Mutualistic root microorganisms such as plant growth-promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) can improve plant fitness. We tested the growth response of wheat (Triticum aestivum [L.]), rice (Oriza sativa [L.]) and black gram (Vigna mungo [L.], Hepper) to an inoculation of AMF and PGPR alone or in combination over two years at seven locations in a region extending from the Himalayan foothills to the Indo-Gangetic plain. The AMF applied consisted of a consortium of different strains, the PGPR of two fluorescent Pseudomonas strains (Pseudomonas jessenii,...
Tipo: Journal paper Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection.
Ano: 2011 URL: http://orgprints.org/18936/1/Maeder_et_al._Soil_Biol_Biochem_43_(2011)_609%2D619.pdf
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Genotype x Environment Interactions of Winter Wheat Organic Eprints
Hildermann, Isabell; Messmer, Monika; Kunz, Peter; Pregitzer, Anjana; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
Winter wheat cultivars for organic farming have to be adapted to highly variable environments. Yield and yield stability, the nutritional value and the bread making quality are here of major importance. Particularly, seed quality, tillering capacity, regeneration ability after harrowing, weed suppression ability, resistance or tolerance against diseases and improved nutrient use efficiency (NUE) under limited nutrient conditions need to be improved by specific breeding efforts (Kunz et al., 2006; Löschenberger et al., 2008). Ten winter wheat cultivars were grown in 2007 in two organic systems of the DOK long-term experiment in CH-Therwil. Eight of these cultivars were tested in 2008 at three organic farms in different pedo-climatic environments in...
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010 URL: http://orgprints.org/19328/1/Hildermann_Eucarpia_2010_Paris_abstract.pdf
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Sorte x Umwelt – Interaktionen von Winterweizen im Biolandbau Organic Eprints
Hildermann, Isabell; Messmer, Monika; Kunz, Peter; Pregitzer, Anjana; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
Winterweizensorten mit Eignung für den Biolandbau müssen an sehr variable Umweltbedingungen angepasst sein. Möglichkeiten, diese Bedingungen in biologischen Anbausystemen zu kontrollieren, sind stark begrenzt, da die Nährstoffzufuhr limitiert ist und keine chemisch synthetischen Pflanzenschutzmittel und leichtlöslichen Mineraldünger eingesetzt werden. Die Züchtungsziele für den Biolandbau weichen teilweise deutlich von den Zielen für den konventionellen Anbau ab. Von besonderer Bedeutung im Biolandbau sind Bestockungsvermögen, Regenerationsfähigkeit nach mechanischer Unkrautbekämpfung, rasche Nährstoffaufnahme, Unkrautunterdrückungsvermögen, Pflanzenhöhe und Resistenz oder mindestens Toleranz gegenüber Blatt- vor allem aber Ährenkrankheiten, ein gut...
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010 URL: http://orgprints.org/19281/1/Hildermann_et_al_DGQ_2010_V01.pdf
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Erträge und Nährstoffgehalte von alten, biologisch und konventionell gezüchteten Winterweizensorten in verschiedenen landwirtschaftlichen Systemen Organic Eprints
Hildermann, Isabell; Thommen, Andreas; Dubois, David; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
Due to limited nutrient conditions in organic farming winter wheat cultivars can often not perform to the full extent of their genetic potential. This study aims to assess nutrient acquisition potential and yields of old, organically and conventionally bred winter wheat cultivars. Ten cultivars were tested within the DOK long-term experiment in two organic systems at low and moderate intensity, a conventional stockless system and an unfertilized control. Yields and nutrient contents of grain and straw were significantly affected by cultivars and systems. Cultivar x system interactions were not detected. Yields were increasing with nutrient level and year of release of cultivars. Under organic conditions all cultivars performed equally well with...
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2009 URL: http://orgprints.org/14030/1/Hildermann_14030.pdf
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Yield and baking quality of winter wheat cultivars in different farming systems of the DOK long-term trial Organic Eprints
Hildermann, Isabell; Thommen, Andreas; Dubois, David; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
A challenge in wheat (Triticum aestivum L.) breeding for organic farming is to provide high-yielding cultivars with appropriate baking qualities under the limiting conditions of organic fertiliser input and without the use of pesticides. Cultivars are usually tested on organic and conventional farms. However, field properties may differ owing to spatial variations of soils and microclimate heterogeneity. In this study, old, organically bred and conventionally bred cultivars were tested in organic and conventional farming systems of the DOK long-term system comparison trial.
Tipo: Journal paper Palavras-chave: Soil biology Cereals; Pulses and oilseeds.
Ano: 2009 URL: http://orgprints.org/17849/1/Hildermann-etal-2009-jsci-food-agric.pdf
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Distinct sporulation dynamics of arbuscular mycorrhizal fungal communities from different agroecosystems in long-term microcosms Organic Eprints
Oehl, Fritz; Sieverding, Ewald; Ineichen, Kurt; Mäder, Paul; Wiemken, Andres; Boller, Thomas.
The aim of this study was to investigate sporulation dynamics of arbuscular mycorrhizal fungal (AMF) communities from agroecosystems differing in land use intensity in long-term experimental microcosms. These were set up with characteristic grassland plants (Lolium perenne, Trifolium pratense, Plantago lanceolata), and inoculated with soils from several grasslands and arable lands subjected to crop rotation or continuous monocropping. The microcosms were maintained under ambient light and temperature conditions over 3 years. A novel, localized sampling scheme was applied for attaining exclusively the newly formed spores at bimonthly intervals. Overall, 39 AMF species were detected by morphological spore identification. Some species were recovered from all...
Tipo: Journal paper Palavras-chave: Soil.
Ano: 2009 URL: http://orgprints.org/26382/1/Oehl_etal_2009_AEE134.pdf
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Response of old, new and organically bred winter wheat cultivars in different farming systems:concept and experimental layout in the DOK field trial Organic Eprints
Hildermann, Isabell; Thommen, Andreas; Dubois, David; Wiemken, Andres; Boller, Thomas; Maeder, Paul.
Organic farmers often use winter wheat (Triticum aestivum L.) cultivars that have been bred under conventional high-input conditions. We test the hypothesis, whether old and organically bred cultivars are better adapted to low-input conditions through a better functioning of the symbiosis with arbuscular mycorrhizal fungi (AMF). Our aim is to assess the nutrient acquisition potential of old, new and organically bred winter wheat cultivars and to identify the role of AMF for nutrient uptake and growth. In October 2006, an experiment with 10 wheat cultivars was superimposed to all four field replicates of the DOK long-term experiment, comprising four different treatments with increasing nutrient input: unfertilized, biodynamic low and moderate intensity and...
Tipo: Conference paper, poster, etc. Palavras-chave: Crop husbandry.
Ano: 2008 URL: http://orgprints.org/12307/1/Hildermann_12307_ed.doc
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Communities of arbuscular mycorrhizal fungi in arable soils are not necessarily low in diversity Organic Eprints
Hijri, Isabelle; Sýkorová, Zuzana; Oehl, Fritz; Ineichen, Kurt; Mäder, Paul; Wiemken, Andres; Redecker, Dirk.
Communities of arbuscular mycorrhizal fungi (AMF) in five agricultural field sites of different management intensities were studied. Variable regions of the ribosomal RNA genes were used to detect and identify AMF directly within colonized roots. Roots from a continuous maize monoculture showed low AMF diversity, in agreement with previous reports on molecular diversity of AMF in agricultural soils. In contrast, a substantially higher diversity of AMF was found throughout the long term `DOK' field experiment, where organic and conventional agricultural practices have been compared side by side since 1978. In this experiment, a 7-year crop rotation is performed under lower levels of inorganic fertilizer input and chemical pest control. These results are in...
Tipo: Journal paper Palavras-chave: Soil biology; Soil quality.
Ano: 2007 URL: http://orgprints.org/13462/1/hijri%2Detal%2D2006%2Dmolecular_ecology%2Dvol15%2D2277%2D89.pdf
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Reduced tillage in temperate organic farming: implications for crop management and forage production Organic Eprints
Krauss, Maike; Berner, Alfred; Burger, Dieter; Wiemken, Andres; Niggli, Urs; Mäder, Paul.
To promote conservation tillage in organic farming systems, weed control and ley removal within arable-ley rotations need to be optimized. A long-term field trial was thus established in Frick, Switzerland in 2002 on a clayey soil and with a mean precipitation of 1000 mm⁄ year. The tillage experiment distinguished between conventional tillage with mouldboard ploughing (CT, 15 cm depth) and reduced tillage (RT), including a chisel plough (15 cm) and a stubble cleaner (5 cm). Results of a 2-year grass-clover ley (2006 ⁄ 2007) and silage maize (2008) are presented. Due to dry conditions, mean grass-clover yields were 25% higher in RT than in CT, indicating better water retention of RT soils. Clover cover and mineral contents of the fodder mixture were also...
Tipo: Journal paper Palavras-chave: Pasture and forage crops; Crop combinations and interactions; Weed management; Soil; Soil biology; Soil tillage.
Ano: 2010 URL: http://orgprints.org/16810/1/Krauss_etal_2010_Red_Till_in_Temperate_organic_farming.pdf
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Sorte x Umwelt-Interaktionen von Winterweizen im biologischen Landbau Organic Eprints
Hildermann, Isabell; Messmer, Monika; Kunz, Peter; Pregitzer, Anjana; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
The possibilities to balance environmental conditions in organic farming systems are strongly restricted as the input of nutrients is limited and no soluble fertilisers and synthetic pestizides are used. These systems require cultivars that are able to adapt to stressful, less controlled and therefore highly variable environments. This study sums up the results of winter wheat cultivars tested under marginal and fertile soil conditions on organic farms in Switzerland. Three were derived from organic, three from conventional breeding programs and two old cultivars. Across three marginal sites, there was a slight trend towards higher yields of the organically bred cultivars. This difference was statistically signifi cant at the lowest yielding site. However,...
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2010 URL: http://orgprints.org/19282/1/Hildermann_NUE_Gumpenstein_2009.pdf
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Impact of land use intensity on the species diversity of arbuscular mycorrhizal fungi in agroecosystems of central Europe Organic Eprints
Oehl, Fritz; Sieverding, Ewald; Ineichen, Kurt; Mäder, Paul; Boller, Thomas; Wiemken, Andres.
The impact of land use intensity on the diversity of arbuscular mycorrhizal fungi (AMF) was investigated at eight sites in the “three-country corner” of France, Germany, and Switzerland. Three sites were low-input, species-rich grasslands. Two sites represented low- to moderate-input farming with a 7-year crop rotation, and three sites represented high-input continuous maize monocropping. Representative soil samples were taken, and the AMF spores present were morphologically identified and counted. The same soil samples also served as inocula for “AMF trap cultures” with Plantago lanceolata, Trifolium pratense, and Lolium perenne. These trap cultures were established in pots in a greenhouse, and AMF root colonization and spore formation were monitored over...
Tipo: Journal paper Palavras-chave: Soil biology.
Ano: 2003 URL: http://orgprints.org/26750/1/Oehl_et_al_2003_AEM.pdf
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