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Biomass production and nitrogen content of C₃-and C₄-grasses in pure and mixed culture with different nitrogen supply

Title data

Gebauer, Gerhard ; Schubert, B. ; Schuhmacher, M. I. ; Rehder, H. ; Ziegler, H.:
Biomass production and nitrogen content of C₃-and C₄-grasses in pure and mixed culture with different nitrogen supply.
In: Oecologia. Vol. 71 (1987) Issue 4 . - pp. 613-617.
ISSN 1432-1939
DOI: https://doi.org/10.1007/BF00379307

Abstract in another language

Two C3 grasses (Hordeum vulgare L., Avena sativa L.) and two C4 grasses (Panicum miliaceum L., Panicum crus-galli L.) were cultivated in standard soil in the open air in pure cultures and in various mixed cultures at low and high nitrogen fertilization levels. After three months the dry weight, length and nitrogen content of the aboveground and below-ground parts of the plants and the shoot/root ratios were determined. Hordeum vulgare was the most successful species irrespective of the nitrogen fertilization level, and also exhibited in most cases the highest nitrogen concentrations. Panicum miliaceum, on the other hand, was the species least able to compete. The production of biomass was reduced in cultures growing under nitrogen starvation conditions, this phenomenon being more pronounced with respect to the C4 than to the C3 species. The decrease in the production of biomass at low N conditions was most drastic with Panicum crus-galli, the species with the lowest nitrogen content and thus assumed to be best adapted to nitrogen starvation conditions. In cultures growing at low nitrogen fertilization levels the shoot/root ratios of all species.shifted in favour of an increasing root proportion. The extent of this shift, however, differed from species to species.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25923
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 15 Apr 2016 07:06
Last Modified: 15 Apr 2016 07:06
URI: https://eref.uni-bayreuth.de/id/eprint/32185