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Soil nitrogen and water management by winter-killed catch crops

Gentsch, N.; Heuermann, D.; Boy, J.; Schierding, S.; von Wirén, N.; Schweneker, D....

SOIL 8, S. 269-281.
DOI: 10.5194/soil-8-269-2022


Open Access
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Ukraine-Krieg: Fallen jetzt die GPS-Lenksysteme an Traktoren aus?

Hoffmann, L.; Noack, P. (2022)

agrarheute.com, 05.03.2022.

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Model Based Optimization of an Insulating Panel Made from Biogenic Residues

Ratka, A.; Hofmann, J.; Ernst, W. (2021)

Construction and Building Materials Volume 318, 125807 (2022).
DOI: 10.1016/j.conbuildmat.2021.125807

 

Within the scope of this article is the development of a mathematical model of an insulating panel made from grain husks and the optimization of the panel regarding the thermal characteristics by using this self-developed thermodynamically model. The model comprises one husk as the smallest unit of the insulating panel. In order to solve the model analytically, the following relevant parameters have been determined:

  • husk geometry
  • density of the pure husk material
  • thermal conductivity of the pure husk material
  • emission coefficient of the husk's surface
  • convection coefficient inside the husks
  • density of the binder
  • thickness of the binder
  • thermal conductivity of the binder

The solved model is validated with produced insulating panels out of grain husks. The optimization of the effective thermal conductivity λeff is done regarding the following parameters:

  • the filling gas
  • the edge length of the husks

According to the results of the simulation, by using Xenon as filling gas instead of air, the effective thermal conductivity λeff can be reduced by 21.6%. The optimal value of the husk’s edge length a depends on the filling gas und therefore varies between 4 and 6 mm. The optimization of the edge length leads to a reduction of the effective thermal conductivity λeff of 7.5 %, according to the model. When implementing individual calculated optimizations in real insulation boards, the thermal conductivity could be improved by up to 32 %. The project is funded by BMWi, the German ministry of economy and energy, and supervised by AiF, the working group of industrial research associations.

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"Effects of phytogenic polyphenols in feed – a review" XII International Agriculture Symposium ‚AGROSYM 2021‘

Fähnrich, B. (2021)

Book of Abstracts: 616 XII International Agriculture Symposium ‚AGROSYM 2021‘.


Mobilität - Grün und Sauber

Huber, N. (2021)

14. Wissenschaftstag der Europäischen Metropolregion Nürnberg am 30. September 2021 in Ansbach.


Biodiversität – grün und bunt

Rudner, M. (2021)

Wissenschaftstag der Metropolregion Nürnberg, Panel „Stadt der Zukunft – Grün und Vielfalt der Generationen“ am 30.09.2021.


Analyse der Auswirkung unterschiedlicher ökologischer Milchviehhaltungssysteme in Bayern auf standardisiert erhobene Werte zu Milchleistung, Fortpflanzungsgeschehen und Stoffwechselgesundheit

Paula, H.; Zeiler, E.; Sauter-Louis, C.; Erhard, M.; Göttl, M.; Kammer, M.; Scholz, S....

Berliner und Münchener Tierärztliche Wochenschrift 2021 (134), S. 1-14.
DOI: 10.2376/1439-0299-2020-41


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Erfinderisches Problemlösen mit TRIZ - Grundlagen und Begriffe

Adunka, R.; Czinki, A.; Gronauer, B.; Götz, K.; Hartschen, M.; Hentschel, C....

VDI-Richtlinie VDI 4521, Blatt 1, 20 S.


Beurteilungswerte für immissionsbedingte Stoffanreicherungen in standardisierten Graskulturen – Orientierungswerte für maximale Hintergrundgehalte ausgewählter anorganischer Luftverunreinigungen

Rudner, M. (2021)

Mitwirkung bei der VDI-Richtlinie 3857 Blatt 2.


HSWT-Forschungsprojekt zu Baulücken und Wohneigentum kooperiert mit drei ländlichen Kommunen in Westmittelfranken

Newsmeldung HSWT, . (2021)

Newsmeldung auf der Webseite der HSWT, online am 28.06.2021.

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Entwicklung einer sterilen Kamillensorte zur Erweiterung der Anbaufläche in Deutschland

Fähnrich, B.; Otto, L.; Sonnenschein, M.; Franz, C.; Ruzicka, J.; Novak, J.; Fraust, B....

Journal für Kulturpflanzen - Assistenzsysteme für den Pflanzenschutz 73 (5 + 6), S. 173 - 174.
DOI: 10.5073/JfK.2021.5-6


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Landwirtschaft und Vielfalt

Gronauer-Weddige, F.; Rudner, M. (2021)

B&B Agrar - die Zeitschrift für Bildung und Beratung 74 (2), S. 26-27.


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Morphologische Untersuchungen an Alopecurus rendlei-Populationen in Luxemburg und angrenzenden Gebieten

Besch, L.; Schneider, S.; Rudner, M. (2021)

Bulletin de la Société des naturalistes luxembourgeois 123, S. 59-81.


Open Access
 

Alopecurus rendlei is an annual grass species of the Poaceae family. The species’
north-eastern distribution range includes Luxembourg and the southern part of Belgium.
The species has shown a dramatic decline in the past decade in both countries and in neighbouring
Germany. The aim of the present study was to investigate the characteristics of A.
rendlei populations in Luxembourg and its bordering regions in Belgium, Germany, and
France and to determine whether regions and populations differ in plant morphology and
site ecology. At each survey site plant material from A. rendlei was collected and the species’
population density was calculated. Furthermore, soil samples were taken, and the floristic
composition of the sites overall was analysed. Within the study area, mean density of A.
rendlei plants per population showed extensive variation. The presence of the species could
only be confirmed in half of the known sites, out of which more than 50% were meadows.
In reference to plant morphology, Luxemburgish populations were similar to the Belgian
ones, except for one population in the south of Luxembourg that displayed many similarities
to French populations. In the German population the internodia were shorter than in
the other studied populations. Plant size as well as leaf length and the leaf length-width ratio
increased from Belgium to Luxembourg and France. The conclusions include management
and further research proposals. Based on our results as well as those of further investigations
that are required, the decline of Alopecurus rendlei should be counteracted.

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Medicinal plants and their secondary metabolites − State of the art and trends in breeding, analytics and use in feed supplementation− with special focus on German chamomile

Fähnrich, B.; Franz, C.; Nemaz, P.; Kaul, H. (2021)

Journal of Applied Botany and Food Quality 94, S. 61 - 74.
DOI: 10.5073/JABFQ.2021.094.008


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Das Schutzgut „Fläche“ in der Umweltverträglichkeitsprüfung. Eine neue Methode in Fachgutachten zu Straßenbauvorhaben

Binder, C.; Krüger, G.; Rudner, M. (2021)

UVP-report 35 (1), S. 26-33.
DOI: 10.17442/uvp-report.035.04

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Den Boden nur sehr flach bearbeiten

Rheinische Bauernzeitung.


Wirklich reif für die Praxis? Teil 1: Wie praxistauglich ist die teilflächenspezifische N-Düngung bereits?

Wilmes, R.; Bauer, B.; Braun, K.; Breunig, P.; Fleischmann, A.; Meyer, T....

Bayrisches Landwirtschaftliches Wochenblatt (18), S. 36-38.


Hier mehr, dort weniger Maiskörner

Wilmes, R.; Bauer, B.; Braun, K.; Breunig, P.; Fleischmann, A.; Meyer, T....

Bayrisches Landwirtschaftliches Wochenblatt (22), S. 38-40.


Feldgrenzen auf den Zentimeter bestimmen

Wilmes, R.; Bauer, B.; Braun, K.; Breunig, P.; Fleischmann, A.; Meyer, T....

Bayrisches Landwirtschaftliches Wochenblatt (27), S. 41-42.


In friedlicher Mission

Wilmes, R.; Bauer, B.; Braun, K.; Breunig, P.; Fleischmann, A.; Meyer, T....

Bayrisches Landwirtschaftliches Wochenblatt (32), S. 38-39.


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