Issue 1 Volume 2
Issue 1 Volume 2 |
Scientific Articles
| 1 | Modelling of the population dynamics (Apera spica-venti) as a decision aid for the herbicide application within precision farming with respect to soil parameters | |
| Author(s): | Ronald Möws, Karlstrasse 10, 38106 Braunschweig, E-Mail: r.moews@tu-bs.de ist Student der Geoökologie an der TU-Braunschweig im 9. Semester. Dipl.-Ing (FH) Peter Vorpahl, Rudolfstrasse 17, 38104 Braunschweig, E-Mail: p.vorpahl@tu-bs.de ist Student der Geoökologie an der TU-Braunschweig im 9. Semester. |
|
| Abstract: | The present article deals with the spatial abundance variability and the modelling of the population dynamics of Apera spica-venti representatively for an annual weed. The aim was to determine a threshold value for the number of seedlings at which herbicides should be applied. For the mod-elling of the spatial population dynamics the life cycle of Apera spica-venti has been combined with a cellular automat. Differ-ent scenarios with different threshold val-ues for the herbicide application have been calculated over 300 years. The 100 years mean amount of herbicides that was ap-plied has been compared against the mean abundance of mature herb plants. It be-came evident that the mean amount of her-bicides did not vary very much with the change of the threshold value. Neverthe-less a 100 years mean reduction potential of up to 70% could be estimated and a threshold value with a propably reduced ecological impact could be found at 45 plants per square meter. | |
| Acknowlegdements: | Diese Arbeit entstand als eine Studienarbeit aus einem Projektseminar im Studiengang Geo-ökologie an der TU Braunschweig. Wir danken allen Teilnehmern des Projektseminars für die Vorarbeiten zu diesem Artikel. Teilgenommen haben Manuel Buch, Helen Feldhaus, Jan Feldhaus, Christian Gläser, Michael Herbst, Yvonne Hermanns, Kerstin Hockmann, Anna Kaeser, Danyelle Klauß, Oliver Mie-lenz, Ronald Möws, Mona Rabe, Henrike Schelle, Anna Trockel, Ferdinand Vollmers, Peter Vorpahl und Julia Weyer als Studenten der Geoökologie unter Betreuung von Dr. Dagmar Söndgerath, Klaus Schmalstieg und Wolgang Max. Unser besonderer Dank geht an Prof. Dr. Otto Richter und Dr. Henning Nordmeyer für die Leitung des Projektseminars und die Unterstützung bei dieser Arbeit. |
|
| Keywords: |
population dynamics, Apera spica-venti, modelling, cellular automat, precision farming, threshold value, herbicide application. | |
| 2 | Radio frequency identification system for the recording of the behaviour of laying hens | |
| Author(s): | Dr. Georg Fröhlich ist Leiter des Arbeitsbereiches Mechatronik, M. Sc. Stefan Thurner ist Mitarbeiter im Arbeitsbereich Technik in der Nutztierhaltung, s.g. ET Stephan Böck und Dipl. Ing. (FH) Robert Weinfurtner sind Mitarbeiter im Arbeitsbereich Mechatronik des Instituts für Landtechnik und Tierhaltung (Leiter Dr. Georg Wendl). Bayerische Landesanstalt für Landwirtschaft, Institut für Landtechnik und Tierhaltung, Vöttinger Str. 36, D-85354 Freising, Tel. 08161/ 71 3463, Fax. 08161/ 714363, E-Mail: Georg.Froehlich@LfL.bayern.de |
|
| Abstract: | Automated electronic identification of moving animals using RFID transponders under the conditions of sophisticated ex-perimental farms still is a challenge as for identification reliability. Competitive sys-tems to identify as much animals as possi-ble at many different positions in a barn or hen house are not available. So the aim of this work was the development and evalua-tion of an identification system for laying hens to observe the movements between parts of the barn and open air runs as well as the laying behaviour and performance in the nest box. The result is an identifica-tion and sensor data recording unit which can benefit several applications in preci-sion livestock farming. | |
| Acknowledgements: | Das dieser Veröffentlichung zugrundeliegende Vorhaben wurde mit Mitteln des Bundesminis-teriums für Bildung und Forschung und der Lohmann Tierzucht GmbH gefördert. |
|
| Keywords: |
electronic animal identification, laying hens, transponder, radio frequency identification (RFID). | |
| 3 | Common Vision Blox Manto - A system for the automatic evaluation of the ranging behavior of laying hens | |
| Author(s): | Dipl. Ing. (FH) Rudolf Peis (rudolf.peis@lfl.byern.de ) ist an der Bayerische Landesanstalt für Landwirtschaft am Institut für Landtechnik, Bauwesen und Umwelttechnik in Frei-sing/Weihenstephan als technischer Angestellter beschäftigt und war mit der Bearbeitung des beschriebenen Projektes beauftragt. Dr. Bernhard Haidn leitet den Arbeitsbereich Verfahrens-technik in der Nutztierhaltung des Institut für Landtechnik, Bauwesen und Umwelttechnik der Bayerischen Landesanstalt für Landwirtschaft und war für das Forschungsprojekt verantwortlich. |
|
| Abstract: | There are rarely investigations that deal with the ranging behaviour of laying hens. In particular, only few long-term investiga-tions exist. A possibility to gather suitable data about the ranging behaviour is auto-matic image analysis. Such systems are able to detect objects within the image, determine their number and position. For the analyses carried out at the Bavarian State Research Centre for Agriculture the software „Common vision Blox “® by Stemmer Imaging was used. The software uses algorithms, which are based on neu-ral networks, and allow machine learning. The research project focused on the effects of structural elements on ranging behav-iour, which was examined by using two groups of hens (each 450 animals). Results about the identification accuracy of the automatic evaluation system, the distribu-tion of the hens on the free-range areas as well as their average distance to the barn are presented. As conclusion of the analy-ses, it can be stated that form and ar-rangement of the structural elements should be further improved. | |
| Keywords: |
Ranging behaviour, laying hens, image analysing system, support vector machine. | |
Applications
| 4 | The "ALPS-BBA database" – alternatives to chemical plant protection online | |
| Autor(en): | Die Autoren sind in verschiedenen Instituten der Biologischen Bundesanstalt für Land- und Forstwirtschaft, Stahnsdorfer Damm 81 in 14532 Kleinmachnow beschäftigt. Dr. agr. Udo Wittchen (Institut für Folgenabschätzung im Pflanzenschutz) zeichnet für die Bereitstellung und Pflege themenbezogener Datenbanken verantwortlich. U.Wittchen@BBA.de Dipl.-Math. Jörg Sellmann (Zentrale EDV-Gruppe) arbeitet als Systemanalytiker und Da-tenbankadministrator. J.Sellmann@BBA.de Dr. agr. Petra Seidel (Institut für Integrierten Pflanzenschutz) ist für die Bewertung alterna-tiver Pflanzenschutzmethoden zuständig. Sie leitet das Projekt „ALPS-BBA“ P.Seidel@BBA.de |
|
| Abstract: | Reducing the use of chemical plant protec-tion products is of outstanding importance in developing sustainable agriculture, pre-ventive protection of consumers and pro-tection of the natural balance. A major means to achieve this end is to use alter-native non-chemical plant protection measures.This requires that a potential circle of us-ers (farmers, extension agents) as well as the public (politicians, business people, scientists, and other interested people) are provided with comprehensive and scien-tifically sound information.The online database ALPS-BBA, which reflects the current state of knowledge in this field, is serving this end. The database is perma-nently extended and updated and is an out-standing contribution to reducing applica-tion of chemical plant protection products. | |
| Keywords: |
alternatives to chemical plant protection measures, crop protection, online database. | |