| edoc-Server der Humboldt-Universität zu Berlin |
| Publikationsart: | Artikel |
| Autor(en): | Nazim Gruda; Sabine von Tucher; Wilfried H. Schnitzler |
| Titel: | N-Immobilisierung in Holzfasersubstraten bei der Anzucht von Tomatenjungpflanze(Lycopersicon lycopersicum (L.) Karst. ex Farw.) |
| Erschienen in: |
Journal of Applied Botany 74 (1-2)
2000 S. 32-37 |
| ISSN: | 0949-5460 |
| Erstveröffentlichung: | 21.12.1999 |
| Einreichung: | 21.10.1999 |
| Veröffentlichung auf edoc: | 07.04.2009 |
| Status: |
published peer_reviewed |
| Volltext: | pdf (urn:nbn:de:kobv:11-10097307) |
| Fachgebiet(e): | Biowissenschaften, Biologie ; Chemie ; Landwirtschaft, Veterinärmedizin ; Naturwissenschaften ; Pflanzen (Botanik) |
| Schlagwörter (ger): | Jungpflanze, Gewächshaus, N-Bilanz, N-Aufnahme, Pflanzenwachstum, Nettophotosynthese, N-Düngung, Torsersatz, Gemüse, Klimakammer |
| Schlagwörter (eng): | growing media, growing medium, N-balance, N-application, net photosynthesis rate, soilless culture, peat substituite, alternative substrate, impregnated wood fiber, N-fertilization, residual mineral N, N uptake |
| Einrichtung: | Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät |
| Metadatenexport:
|
Endnote Bibtex |
| print on demand:
|
|
| Diese Seite taggen:
|
| Abstract (eng): | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| N-immobilization of wood fiber substrates during production of vegetable transplants was studied in greenhouse and under phytotron conditions. Tomato transplants were grown on white peat, unimpregnated and impregnated wood fiber with three N-levels respectively N-immobilization was calculated on the basis of N-balance including N-uptake by plants and residual mineral N in the substrates. in addition, the influence on net photosynthesis rate was examined. Higher N-immobilization was found by increasing of N-application rates. Net-N-immobilization in impregnated wood fiber substrates was comparable to white peat with 100 mg N l(-1). Tomato transplants, cultivated on impregnated wood fiber substrates, showed significantly higher growth compared to plants cultivated in unimpregnated wood fibers. With additional N-fertilization (level N3) the significance of N-immobilization in impregnated wood fiber substrates for the growth of tomato plants could be neglected. However, general recommendations for the amount of fertilizer to be added are difficult, because of strongly varying contents of mineral nutrients in the different substrate loads. Nevertheless, it is necessary to supply wood fiber substrates with nutrient solutions or fertilizer from the beginning of plant culture. Substrates without plants, exposed to the same conditions showed the same tendencies in N-immobilization, as substrates with plants. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Zugriffsstatistik:
Bei Formatversionen eines Dokuments, die aus mehreren Dateien bestehen (insbesondere HTML), wird jeweils der monatlich höchste Zugriffswert auf eine der Dateien (Kapitel) des Dokuments angezeigt. Um die detaillierten Zugriffszahlen zu sehen, fahren Sie bitte mit dem Mauszeiger über die einzelnen Balken des Diagramms. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Gesamtzahl der Zugriffe seit Jun 2011:
|
|
| |||