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IJSTR >> Volume 2- Issue 6, June 2013 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Aeschynomene Aspera L., Nitrogen Fixing Stem Nodulation Plant From Manipur

[Full Text]



Wangkheirakpam Radhapiyari Devi



Keywords: Stem nodulation; Aeschynomene aspera L.; Manipur; Nitrogen fixation; micro Kjeldahl method



Abstract : Aeschynomene aspera L. is a wild annual legume growing in periodically waterlogged soils in Manipur, India with profuse stem nodulation. Nodules are formed on the stem at the emergence of lateral root primordia, called nodulation sites. They are distributed on vertical rows all along the stem and branches. Stem nodules are hemispherical in shaped, dark green outside and contain a red-pigmented central zone. Stem nodules exhibit high nitrogen-fixing potential being detected by micro Kjeldahl method. The amount of Nitrogen (N) content (%) found in term of kg N per kg dry weight was as 2.4x10-7 ± 1x10-7 kg from the 45-50 days old stem nodules. Because of nitrogen fixing potential and its ability to grow in waterlogged conditions, A. aspera L. could be introduced as organic manure into the rice cropping system in Manipur.



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