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Der Einfluss organischer Düngung im Langzeitdüngungsversuch auf das Ausmaß der Wurzelinfektion mit Arbuskulärer Mykorrhiza sowie die Entwicklung des wurzelexternen Myzels bei Kartoffel (Solanum tuberosum)

Scharfy, Deborah; Raupp, Dr Joachim and Neumann, Elke (2005) Der Einfluss organischer Düngung im Langzeitdüngungsversuch auf das Ausmaß der Wurzelinfektion mit Arbuskulärer Mykorrhiza sowie die Entwicklung des wurzelexternen Myzels bei Kartoffel (Solanum tuberosum). [Effect of organic fertilisation on the root colonisation by arbuscular mycorrhizal fungi within a long-term fertilisation trial and the development of the extraradi-cal mycelium of potato (Solanum tuberosum).] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

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Summary

In the present study, AMF root colonisation of potato plants was compared between organically and minerally fertilised field plots, which did not significantly differ in the total amount of plant available P. The AMF root colonisation was increased in response to organic fertilisation. This indicates that organic fertilisation can enhance AMF development independently from the soil P fertilisation level. Furthermore, soil grown mycelium was trapped in fungal compartments. This technique allowed the extraction and quantification of coarse and finely branched soil grown hyphae after harvest. The soil in the fungal compartments was either fertilised with low or with high amounts of mineral P. In organically fertilised field plots, the amounts of finely branched hyphae in fungal compartments filled with soil of a high P fertilisation level were much higher compared to compartments filled with low P soil. It is discussed, whether AMF isolates from organically managed field sites have a better ability to forage for locally restricted, P rich soil patches compared to AMF isolates from minerally fertilised fields.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Bodenfruchtbarkeit Pflanzenernährung Mykorrhiza Stallmist Phosphor
Subjects: Soil > Nutrient turnover
Soil > Soil quality > Soil biology
Crop husbandry > Composting and manuring
Research affiliation: International Conferences > 2005: Scientific Conference on Organic Agriculture
Germany > Institute for Biodynamic Research - IBDF
Deposited By: Raupp, Dr. Joachim
ID Code:3679
Deposited On:22 Jul 2005
Last Modified:12 Apr 2010 07:30
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted

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