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Yield and arbuscular myccorhiza fungal root colonization of organically or minerally fertilized wheat grown on a dry, sandy soil

Jarosch, A.-M.; Neumann, E.; Oltmanns, M. and Raupp, J. (2008) Yield and arbuscular myccorhiza fungal root colonization of organically or minerally fertilized wheat grown on a dry, sandy soil. In: Proceedings of the 17th IInternational Symposium of CIEC, NRC, Cairo, Egypt, pp. 139-145.

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Summary

We investigated wheat yield and arbuscular mycorrhiza (AM) fungal root colonization and spore formation in response to long-term mineral or organic soil fertilization. Plots were either fertilized with high or low amounts of mineral fertilizer or cattle manure since 27 years. At low fertilization levels there was no difference in yield between minerally and organically fertilized plants. High levels of mineral fertilizer application reduced wheat yields. Probable reasons can be that either the high nitrogen availability was less effectively used for grain development of minerally fertilized plants, or the mineral fertilization rendered the plants more sensitive towards drought stress. The extent of AM fungal root colonization appeared to depend on the plant P nutritional status rather than the type of fertilizer applied. The low fertilization treatments showed higher rates of AM root colonization. The number of AM spores, however, was higher in organically compared with minerally fertilized soil, indicating that organic fertilization increased reproduction of these beneficial microbes under dry soil conditions.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:farmyard manure, mineral fertilizer, wheat, yield, arbuscular mycorrhiza, root colonization, spore density, drought, phosphorus
Subjects: Crop husbandry > Production systems > Cereals, pulses and oilseeds
Soil > Soil quality > Soil biology
Crop husbandry > Composting and manuring
Research affiliation: Germany > Institute for Biodynamic Research - IBDF > Farmyard Manure
Germany > Institute for Biodynamic Research - IBDF > Soil Life
Germany > Institute for Biodynamic Research - IBDF > Crop Growth and Yield
Deposited By: Raupp, Dr. Joachim
ID Code:16096
Deposited On:21 Sep 2009 11:57
Last Modified:12 Apr 2010 07:39
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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