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Improving nutrient uptake in wheat through cultivar specific interaction with Azospirillum

Hoagland, Dr. Lori; Murphy, Dr. Kevin; Carpenter-Boggs, Dr. Lynne and Jones, Dr. Steve (2008) Improving nutrient uptake in wheat through cultivar specific interaction with Azospirillum. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

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Summary

Obtaining sufficient plant available nitrogen in organic dryland wheat cropping systems is difficult. This study was conducted to determine whether inoculation with Azospirillum could improve nitrogen uptake and increase crop yield, and whether there are differences among wheat cultivars in the ability to benefit from inoculation of these diazotrophic bacteria. Seed from twenty historic and modern wheat cultivars were either left untreated, or treated with a commercial inoculant of Azospirillum, and planted at two locations under certified organic management. In one location with lower fertility, inoculation significantly increased yield and protein, and clear differences existed among individual cultivars in response to the inoculant. In another location with higher fertility, none of the cultivars responded as favorably to the inoculant, and yield in some cultivars was reduced. Plant breeders should be able to select for beneficial cultivar interactions with Azospirillum to increase wheat yield and protein levels. Additional research is needed to determine the impact of site-specific soil conditions on the effectiveness of Azospirillum in organic systems.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:nitrogen, plant breeding, organic farming, diazotrophs
Subjects: Farming Systems > Farm nutrient management
Research affiliation: International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.5 Plant breeding
Deposited By: Hoagland, Dr. Lori
ID Code:12325
Deposited On:30 Sep 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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