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Crop Responses to Azospirillum Inoculation

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Advances in Soil Science 12

Part of the book series: Advances in Soil Science ((SOIL,volume 12))

Abstract

Following the first reports of an Azospirillum—plant association over the last decade, there has been considerable interest in the use of Azospirillum species as nitrogen-fixing bacteria in association with the roots of monocotyledonous plants, particularly grasses and grain crops. The original thesis was that Azospirillum (synonym Spirillum) invades cortical cells, forming a “primitive symbiotic association” which was suspected of fixing N2 (Dobereiner and Day, 1976). Despite a substantial body of literature, there is still a lack of clarity concerning the mechanisms that result in improved growth and performance of the host plant, or why lack of response is often observed in the field. This is not altogether surprising because this phenomenon is complex and quite variable.

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  1. Department of Agronomy, University of Georgia, Athens, GA, 30602, USA

    M. E. Sumner

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  1. USDA Conservation & Production Research Laboratory, Bushland, 79012, Texas, USA

    B. A. Stewart

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Sumner, M.E. (1990). Crop Responses to Azospirillum Inoculation. In: Stewart, B.A. (eds) Advances in Soil Science 12. Advances in Soil Science, vol 12. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-3316-9_2

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