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| Raubuch, Markus; Pyttlik, Claudia; Jörgensen, Rainer Georg. |
| In dieser Untersuchung wurden die Auswirkungen die C- und N-Mineralisation und die Rolle der mikrobiellen Biomasse als möglicher Stickstoffpuffer bzw. Zwischenspeicher in einem Zweikulturennutzungssystem erfasst. Die Ergebnisse der Untersuchung beziehen sich auf den pflanzenbaulichen Versuch von Graß und Scheffer 2002 auf der Hessischen Staatsdomäne Frankenhausen. Dabei sollte die Auswirkung von Bodenbearbeitungsmaßnahmen und Düngerapplikationen unterschiedlicher Intensität durch die monatlichen Erhebungen zur Erfassung des mikrobiell gebundenen Kohlen- und Stickstoffes, der C- und N-Mineralisationsleistung abgeschätzt werden. Da der Versuch zum Zeitpunkt der Tagungsanmeldung noch nicht abgeschlossen war, sind in dieser Kurzfassung nur die unvollständigen... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology. |
| Ano: 2003 |
URL: http://orgprints.org/1023/1/raubuch%2D2003%2Dbodenfruchtbarkeit.pdf |
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| Schmidt, Harald; Schüler, Christian; Jörgensen, Rainer Georg. |
| In an on-farm investigation a total of 39 fields of 9 organic managed farms (main crop winter cereals) were sampled in the years 2005 and 2006. Several soil variables were evaluated as well as crop yield, weather data and the field history. Results of statistical analyses (mean, range, standard deviation, correlation and multiple linear regression) are presented. Comparable to physical and chemical variables certain fields were also characterised by soil biological variables. Main factors of cereal N-yield were pre crop, crop rotation, soil type and soil organic matter content (SOM). Soil biological variables had only a low influence. Nitrogen availability was affected by physical and biological soil factors, the weather and management measures as straw... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Crop husbandry. |
| Ano: 2007 |
URL: http://orgprints.org/9581/1/9581_Schmidt_Vortrag.pdf |
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| Hupe, Anke; Näther, Franziska; Schulz, Hannes; Jörgensen, Rainer Georg; Heß, Jürgen; Wichern, Florian. |
| 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... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil. |
| Ano: 2015 |
URL: http://orgprints.org/26935/1/26935_hupe.pdf |
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