Die chronologische Liste zeigt aktuelle Veröffentlichungen aus dem Forschungsbetrieb der Hochschule Weihenstephan-Triesdorf. Zuständig ist das Zentrum für Forschung und Wissenstransfer (ZFW).
K.-U. Röver,
Nurdan Sahin-Demirbag,
Prof. Dr. Martina Hofmann
Graseverhalten und Selektivität weidender Ochsen auf extensiver Standweide (2005) Mitteilungen der Arbeitsgemeinschaft für Grünland und Futterbau, Band 7, 2005 , S. 49-52.
Nurdan Sahin-Demirbag,
Prof. Dr. Martina Hofmann,
K.-U. Röver,
J. Isselstein
Untersuchungen zur Pflanzenartenvielfalt auf extensiver Standweide mit Fleischrindern (2005) Mitteilungen der Arbeits-gemeinschaft für Grünland und Futterbau, Band 7, 2005 , S. 259-262.
Prof. Dr. Martina Hofmann
Räumliche und zeitliche Aspekte der pflanzlichen Artenvielfalt auf einer Standweide mit Rindern (2005) Vortrag, Jahrestagung der Arbeitsgemeinschaft für Grünland und Futterbau, Bad Elster/Deutschland, 2005 .
Prof. Dr. Martina Hofmann
Erhöhung der Artenvielfalt im Wirtschaftsgrünland – botanische und agronomische Aspekte (2004) Vortrag im Rahmen des Kolloquiums Pflanzenproduktion, Universität Kiel, 3. November 2004 .
Prof. Dr. Martina Hofmann,
J. Isselstein
Berechtigungen: Peer Reviewed
Effects of drought and competition by a ryegrass sward on the seedling growth of a range of grassland species (2004) Journal of Agronomy and Crop Science 190 (4), S. 277-286.
DOI: 10.1111/j.1439-037X.2004.00117.x
In de‐intensified grassland where an increased seedling recruitment is seen as a prerequisite to enhance plant species diversity, establishment success of introduced seeds of wildflower species is often poor. Outshading by the existing sward and dry weather spells when seedlings are at an early stage of development are major reasons for a low seedling establishment. The effects of drought and competition by an existing Lolium perenne sward on the growth of seedlings of seven wildflower species were investigated under standardized environmental conditions. Without competition (control), the relative growth rate of the wildflower seedlings varied between 103 (Tragopogon pratensis) and 184 mg g−1 day−1 (Leontodon autumnalis). Species differed in the extent of growth reduction by competition. Compared with the control, reduction of seedling dry weight ranged from 45 % (Trifolium pratense) up to 88 % (Daucus carota). The time range between onset of desiccation and first effects on growth varied between species, with T. pratense showing early and strong growth reduction in contrast to D. carota being least affected. It can be concluded, that those species which maintain a comparatively high growth rate supported by adapted shoot‐root allocation are most promising for establishment in grassland as they can exploit profiles of higher resource availability.
Prof. Dr. Martina Hofmann,
J. Isselstein
Berechtigungen: Peer Reviewed
Seedling recruitment on agriculturally improved mesic grassland: The influence of disturbance and management schemes (2004) Applied Vegetation Science 7 (2), S. 193-200.
DOI: 10.1111/j.1654-109X.2004.tb00610.x
Question: Are the recruitment patterns of deliberately introduced wildflower species influenced by cutting frequencies and disturbance treatments? To what extent do these different treatments affect productivity and sward structure of an agriculturally improved grassland? Location: A mesic lowland grassland near Göttingen, Lower Saxony, Germany. Methods: Recruitment success of eight sown wildflower species was studied in a permanent grassland treated by a factorial combination of different pre-sowing cutting intervals (1, 3 or 9 wk), post-sowing cutting intervals (1,3 or 9 wk) and disturbance (control, harrowing, removal of sward). Seedling emergence and survival, biomass production and sward structure were followed over two years. Results: For most species seedling emergence was highest in the harrowing treatment. The complete sward removal did not further increase seedling emergence. Seedling survival was strongly influenced by the post-sowing cutting frequency with highest mortality in the 9 wk cutting interval compared to one and 3 wk cutting intervals. Annual dry matter yield varied between 4.4, 5.9 and 9.4 t.ha-1 in the 1,3 and 9 wk pre-sowing cutting treatment, respectively. In June, when the seeds were sown, the tiller number of the 1 wk cut plots was twice as high as for the 9 wk cut plots and five times higher than in the harrowing treatment. Conclusions: Disturbance by harrowing provided the optimal environmental cues to trigger germination, whereas seedling survival was facilitated by increased light penetration due to frequent cutting. The investigation revealed the overriding importance of frequent standing crop removal in the early phase of seedling establishment on agriculturally improved grassland.
Prof. Dr. Martina Hofmann,
J.R.B. Tallowin
Spatial and temporal aspects of sward structure on a continuously stocked, botanically diverse pasture (2004) Grassland Science in Europe 2004 (9), S. 235-238.
Prof. Dr. Martina Hofmann,
C. Fricke,
J. Isselstein
Establishment of experimentally introduced plant species in a hay meadow (2004) Grassland Science in Europe 2004 (9), S. 368-391.
Betreuung der Publikationsseiten
Gerhard Radlmayr
Referent für Wissenstransfer und Forschungskommunikation
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