Beitrag in einem Tagungsband
Einfluss der Mykorrhizierung auf die N-Rhizodeposition der Erbse im Laufe der Vegetation
Details zur Publikation
Autor(inn)en: | Hupe, A.; Näther, F.; Schulz, H.; Jörgensen, R.; Heß, J.; Wichern, F. |
Herausgeber: | Häring, A. M.; Hörning, B.; Hoffmann-Bahnsen, R.; Luley, H.; Luthardt, V.; Pape, J.; Trei, G. |
Verlag: | Verlag Dr. Köster |
Verlagsort / Veröffentlichungsort: | Berlin |
Publikationsjahr: | 2015 |
Seitenbereich: | 24-25 |
Buchtitel: | Beiträge zur 13. Wissenschaftstagung Ökologischer Landbau. Am Mut hängt der Erfolg: Rückblicke und Ausblicke auf die ökologische Landbewirtschaftung. |
ISBN: | 978-3-89574-885-1 |
URN / URL: |
Zusammenfassung, Abstract
Below-ground plant N (BGN) of grain legumes is an important N pool for subsequent crops. Especially the easily available rhizodeposits (RD) provide an important N input, which might also be relevant in mixed stands. The objective of the present study was to estimate the time course of the BGN, especially RD-N, and the effect of mycorrhization on RD-N. Therefore, the quantity of RD-N of peas with and without mycorrhiza (Frisson and P2) was estimated at four different growth stages. The results show that the relative contribution of BGN to total plant N was equal in both varieties during the growing season. The contribution of RD-N to total plant N decreased over time. Mycorrhization did not affect the quantity of N-rhizodeposition. Consequences for mixed cropping systems will be further investigated in the project.
Below-ground plant N (BGN) of grain legumes is an important N pool for subsequent crops. Especially the easily available rhizodeposits (RD) provide an important N input, which might also be relevant in mixed stands. The objective of the present study was to estimate the time course of the BGN, especially RD-N, and the effect of mycorrhization on RD-N. Therefore, the quantity of RD-N of peas with and without mycorrhiza (Frisson and P2) was estimated at four different growth stages. The results show that the relative contribution of BGN to total plant N was equal in both varieties during the growing season. The contribution of RD-N to total plant N decreased over time. Mycorrhization did not affect the quantity of N-rhizodeposition. Consequences for mixed cropping systems will be further investigated in the project.
