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Dive into the research topics where Horst-Henning Steinmann is active.

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Featured researches published by Horst-Henning Steinmann.


Journal of Plant Diseases and Protection | 2013

Spatio-temporal analysis of crop rotations and crop sequence patterns in Northern Germany: potential implications on plant health and crop protection

Horst-Henning Steinmann; Eike Stefan Dobers

Crop sequence patterns are considered as those schemes farmers apply within a single field to succeed crops over time, regardless of whether the same crop is grown continuously or a diverse rotation is used. This study aimed at identifying these patterns for a large and representative area in Northern Germany during a six-year period from 2005 to 2010. The analysis was carried out for the entire federal state of Niedersachsen (Lower Saxony) which has 1.8 million hectares of arable area.Field data was obtained by the Integrated Administration and Control System (IACS), which was developed for the administration of the European agricultural direct payments. So far, German IACS has not been exploited in the light of agronomical practice. In total, the available data comprised about 990 000 records for each year, each representing a single field out of the study region. Throughout the analysis, different agronomic and temporal scopes resulted in a different number of fields being accessible for evaluation. Ten major arable crops and crop groups were considered for the study; 184 701 fields representing 645 870 ha of arable area could be analyzed to identify crop sequence patterns over the six years. Thus, 16 836 combinations of the 10 major crops occurring in time and space could be described. Thereof, 12 crop sequence patterns were found covering 55.6% of arable area. For 2010, 619 447 fields representing 1 730 564 ha of arable area, were analyzed with regard to their respective crops and pre-crops. Maize, winter wheat, sugar beet, oilseed rape and potatoes were studied with special emphasis. On average, 46.9% of maize area were cropped following maize as a pre-crop. For winter wheat, self-sequences were identified on 30.0% of arable area. Oilseed rape and sugar beet are generally grown in typical rotations. However, 24.6% of arable crop area were considered as having a pre-crop which might be disadvantageous for crop health.Due to a rapid increase of maize area in the region, crop sequence patterns are undergoing a dramatic shift. It is concluded that a large proportion of arable area is potentially threatened by risks of pest and disease outbreaks as well as by economical over-reliance in a few cash crops. We demonstrate, that administrative data could offer many insights in agronomical trends and practices and should, therefore, be analyzed in more detail.


Journal of Plant Diseases and Protection | 2010

Using selective herbicides to manage beneficial and rare weed species in winter wheat

Lena Ulber; Horst-Henning Steinmann; Sebastian Klimek

Weed species within arable farming systems act as a source of food and provide habitat for various taxa at higher trophic levels. Using field experiments in winter wheat, we investigated whether selective herbicides can be used as a potential tool for sustaining beneficial, less competitive weed species and rare species of high conservation value while controlling highly competitive weed species. We tested three selective herbicides with different active ingredients (amidosulfuron + iodosulfuron, fluroxypyr, mecoprop-P) at two application rates. We analysed cover of selected focal species (Centaurea cyanus and Papaver rhoeas) as well as weed species richness, winter wheat yield and weed community composition as influenced by herbicide treatments. Herbicide treatments involving fluroxypyr generally allowed for the selective retention of the regionally threatened weed species C. cyanus and P. rhoeas as a beneficial species of high value for associated trophic level and provided considerable control of the competitive species G. aparine. Herbicide treatments significantly affected weed species composition. The PRC method clearly showed the time-dependent herbicide treatment effects on weed community composition and allowed an estimate of the variance in species composition that is explained by the herbicide treatments. Our results indicated that applying selective herbicides can provide a feasible option for in-crop management of weed diversity by retention of beneficial or rare weed species occurring at moderate densities and control of highly-competitive weeds. However, weed control strategies must be tailored to site-specific conditions to account for increased abundance of competitive species.ZusammenfassungUnkräuter können Ressource und Habitat für nützliche Arten höherer trophischer Ebenen bereitstellen. Anhand von Feldversuchen in Winterweizen wurde der Einsatz selektiver Herbizide zur Förderung nützlicher, weniger konkurrenzstarker und seltener Unkrautarten bei gleichzeitiger Kontrolle von konkurrenzstarken Unkrautarten untersucht. Es wurden drei selektive Herbizide (Amidosulfuron + Iodosulfuron, Fluroxypyr, Mecoprop-P) anhand von zwei Aufwandmengen getestet. Dabei wurden der Deckungsgrad der untersuchten Arten (Centaurea cyanus und Papaver rhoeas), die Gesamtartenzahl, der Winterweizenertrag sowie die Zusammensetzung der Unkrautpopulation analysiert. Die Applikation von Fluroxypyr erwies sich als geeignet für sowohl die Erhaltung der regional bedrohten Art C. cyanus und der Art P. rhoeas, die eine hohe Bedeutung für höhere trophischen Ebenen aufweist, als auch für die Bekämpfung der konkurrenzstarken Art G. aparine. Die Herbizidbehandlungen hatten einen signifikanten Einfluss auf die Zusammensetzung der Unkrautpopulationen. Die multivariate Principal Response Curve (PRC) Methode veranschaulichte die Auswirkungen der Herbizidbehandlungen auf die Populationszusammensetzung in Abhängigkeit von der Versuchslaufzeit und ermöglichte zudem eine Abschätzung der durch die Herbizidbehandlungen erklärten Varianz. Die Ergebnisse zeigen, dass selektive Herbizide eingesetzt werden können, um seltene oder nützliche Unkrautarten zu erhalten und konkurrenzstarke Arten zu bekämpfen. Allerdings sollte die jeweilige Behandlung situationsspezifisch an die vorhandenen Unkrautarten angepasst werden um ein erhöhtes Aufkommen von konkurrenzstarken Arten zu vermeiden.


Renewable Agriculture and Food Systems | 2017

Farm level implementation of soil conservation measures: farmers’ beliefs and intentions

M. Werner; Erwin Wauters; Jo Bijttebier; Horst-Henning Steinmann; Greet Ruysschaert; Andrea Knierim

Understanding motivating factors for taking soil conservation measures is seen as key to improving on-farm implementation. However, to date only few on-farm conservation measures have been investigated. The objective of this paper is to investigate the influence of farmers’ subjective beliefs on their intention to apply and actual implementation of cover cropping, with the region of Brandenburg (Germany) as a case. An additional objective was to investigate how these insights can contribute to increase farm level implementation of soil conservation measures. Theory of planned behavior provides an approach to understand human behavior by analyzing farmers’ subjective beliefs. Our results, based on a survey of 96 farmers, show that attitudes (ATTs) and perceived difficulty significantly explain variations in intention to apply cover cropping, with ATTs being generally very positive. We discuss that, in this case, the most effective way to increase on-farm implementation is to decrease the farmers’ perception of difficulty. This can be achieved by providing information to farmers on how to overcome barriers to implementation of conservation measures. In-depth insights into belief structures reveal what kind of information is most useful in the case of cover cropping.


Pest Management Science | 2018

Interactions of glyphosate use with farm characteristics and cropping patterns in Central Europe: Interactions of glyphosate use with farm characteristics and cropping patterns

Armin Wiese; Michael Schulte; Ludwig Theuvsen; Horst-Henning Steinmann

BACKGROUND Although glyphosate is the most widely used herbicide in the European Union, little is known about the patterns of its usage in arable farming. Therefore, a nationwide survey of 2026 German farmers was analysed to obtain further knowledge about glyphosate applications in conventional European arable farming. Given its broad range of agri-environmental and farm-type conditions, Germany can be regarded as a suitable study region to represent Central European farming. The growing season 2013/2014 was set as a reference. RESULTS Farmers who participated in the survey employ diverse patterns of glyphosate use. While 23% stated that they did not use glyphosate in the season in question, others applied glyphosate to their total arable area. However, most applications occurred on specific parts of the farm. Application patterns of oilseed rape, winter wheat, maize and sugar beet were studied in detail, and U-shaped distributions of glyphosate use intensity were observed. The effects of farm type and management practices on glyphosate use patterns were mixed in the various crops. CONCLUSION Motivation for glyphosate use differs widely within the farming community. Agricultural researchers, extension services and policy makers are recommended to mitigate vulnerabilities associated with glyphosate use, such as routine spraying and practices that increase selection pressure for the evolution of glyphosate-resistant weeds.


Julius-Kühn-Archiv | 2018

Beschreibung von Glyphosat-Anwendungsmustern im norddeutschen Ackerbau -Vergleich zweier unterschiedlicher Ansätze.

Jan-Erik Mutz; Sabine Andert; Armin Wiese; Horst-Henning Steinmann; Bärbel Gerowitt

Glyphosat ist der meistgenutzte Herbizidwirkstoff in Deutschland. In den vergangenen Jahren haben zahlreiche Studien die Anwendungsmuster glyphosathaltiger Herbizide untersucht. Der vorliegende Beitrag fasst zwei unterschiedliche empirische Untersuchungen zum Einsatz von Glyphosat in Norddeutschland zusammen. Ziel der Studie ist es, durch die gemeinsame Analyse unterschiedlich erhobener Anwendungsdaten weitergehende Erkenntnisse zu den Applikationsmustern glyphosathaltiger Herbizide im Ackerbau zu gewinnen. Der Beitrag besitzt innovativen Charakter, es werden schlagspezifische Anwendungsdaten und betriebliche Fragebogenerhebungen zum Glyphosateinsatz aus funf Regionen Norddeutschlands (Diepholz, Uelzen, Rostock, Flaming und Oder-Spree) zusammengefuhrt. Die Ergebnisse belegen, dass die feldspezifischen Applikationsmuster glyphosathaltiger Herbizide im Ackerbau die Einschatzungen der Landwirte in der Befragung stutzen, die Ubereinstimmung jedoch mit zunehmender Detailtiefe abnimmt. Hinsichtlich der Anwendungsmuster glyphosathaltiger Herbizide weisen die Ergebnisse darauf hin, dass Landwirte fur eine Unterscheidung der Anwendungsgebiete Vorsaatanwendung und Stoppelbehandlung noch nicht ausreichend sensibilisiert sind. Fur die zukunftige Diskussion um den Wirkstoff Glyphosat ware eine einheitliche und von allen Beteiligten verwendete Definition der Anwendungsabgrenzungen wunschenswert, um eine losungsorientierte Diskussion zu ermoglichen.


Journal of Plant Diseases and Protection | 2015

Growth Responses to Elevated Temperature and Reduced Soil Moisture During Early Establishment of three Annual Weeds in Four Soil Types

Barbara Edler; Jana Bürger; Laura Breitsameter; Horst-Henning Steinmann; J. Isselstein

We investigated the effects of simulated prospective increased temperatures and reduced soil moisture during the vegetation period on the early growth of three weed species that co-occur in spring crops and are currently spreading in Europe. Potted four-species crop-weed-communities of Abutilon theophrasti, Datura stramonium, Iva xanthiifolia, and maize were exposed to warming (ambient temperature + 2.5°C, treatment “warm”) and drought (soil water potential of -0.1 to -1.5 MPa, “dry”) versus ambient temperature (treatment “ambient”) and a soil water potential of −0.0036 MPa (“moist”), in four soil types (clay, loess, peat, sand based mixtures) in greenhouse settings. We determined the performance of the weeds in terms of total biomass accumulation as well as their morphological acclimation regarding root length, leaf size and root-to-shoot ratio at various combinations of the experimental factors. Warm-dry conditions had a significant negative effect on total weed biomass and also resulted in a higher proportion of maize in total aboveground biomass. In D. stramonium, aboveground vs. belowground allocation and leaf size responded more strongly to the experimental factors than in the other two species. Total biomass values of individual plants in warm-dry conditions on average were > 50%, 40 to 55%, and < 40% of those in ambient-moist conditions for A. theophrasti, I. xanthiifolia, and D. stramonium, respectively. Soil and its interaction with moisture and temperature additionally had a significant effect on various traits of the weed species which highlights the importance of considering this factor when investigating plant responses to altered climate conditions.


Biological Conservation | 2008

Rewarding farmers for delivering vascular plant diversity in managed grasslands: A transdisciplinary case-study approach

Sebastian Klimek; Anne Richter gen. Kemmermann; Horst-Henning Steinmann; Jan Freese; J. Isselstein


Crop Protection | 2012

Uses and benefits of glyphosate in German arable farming

Horst-Henning Steinmann; Michael Dickeduisberg; Ludwig Theuvsen


Weed Research | 2009

An on-farm approach to investigate the impact of diversified crop rotations on weed species richness and composition in winter wheat

Lena Ulber; Horst-Henning Steinmann; S. Klimek; J. Isselstein


Environmental Conservation | 2011

Implementing and evaluating the effectiveness of a payment scheme for environmental services from agricultural land

Lena Ulber; Sebastian Klimek; Horst-Henning Steinmann; J. Isselstein; Markus Groth

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Barbara Edler

University of Göttingen

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J. Isselstein

University of Göttingen

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Armin Wiese

University of Göttingen

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Lena Ulber

University of Göttingen

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M. Werner

University of Göttingen

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