Quantification of the biological fixation of nitrogen in Canavalia ensiformis by the methods of natural abundance of 15N and difference of total N

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Gloria M. Martín Alonso
Yonger Tamayo Aguilar
Ionel Hernández Forte
Mario Varela Nualles
Ednaldo da Silva Araujo

Abstract

In this work were traced as objectives to evaluate the growth and N accumulation in Canavalia ensiformis, grown in a Cambisol soil of El Salvador municipality, county of Guantánamo, coinoculated with four isolated of Rhizobium and two strains of HMA, as well as to quantify the process of nitrogen simbiotic fixation of this species, by the methods of the natural abundance of 15N and the difference of total N. The dry mass growth and the N absorption of the jackbean sowed in monoculture were superior in presence of the isolated of Rhizobium Can 5, coinoculated with Rhizoglomus intraradices, in these plants, the BNF oscillated from 59 to 72 kg ha-1 in the dry and rainy period, respectively. The methods of BNF quantification, difference of total N and natural abundance of 15N were similar to each other, although the difference of total N overestimates the quantification values regarding the natural abundance.

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How to Cite
Martín Alonso, G. M., Tamayo Aguilar, Y., Hernández Forte, I., Varela Nualles, M., & da Silva Araujo, E. (2017). Quantification of the biological fixation of nitrogen in Canavalia ensiformis by the methods of natural abundance of 15N and difference of total N. Cultivos Tropicales, 38(1), 122–130. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/1347
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