Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation

Biological nitrogen fixation (BNF) by legumes is an indicator of their potential contribution to recycling nitrogen in cropping systems. Many techniques exist for the quantitative measurement of legume BNF. The isotopic dilution (ID) methods are the most accurate but are too expensive, time-consumin...

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Main Authors: Boubié Vincent Bado, Michel Sedogo, François Lompo, Sanoussi Manzo Maman Laminou
Format: Article
Language:English
Published: Hindawi Limited 2018-01-01
Series:Advances in Agriculture
Online Access:http://dx.doi.org/10.1155/2018/9641923
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spelling doaj-bba5a230031c45a18372354f3ea7c41f2020-11-24T21:00:39ZengHindawi LimitedAdvances in Agriculture2356-654X2314-75392018-01-01201810.1155/2018/96419239641923Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick EstimationBoubié Vincent Bado0Michel Sedogo1François Lompo2Sanoussi Manzo Maman Laminou3International Crop Research Institute for the Semi-Arid Tropics (ICRISAT), BP 12404 Niamey, NigerInstitut de l’Environnement et de Recherche Agricoles (INERA), BP 7192, Ouagadougou, Burkina FasoInstitut de l’Environnement et de Recherche Agricoles (INERA), BP 7192, Ouagadougou, Burkina FasoInternational Crop Research Institute for the Semi-Arid Tropics (ICRISAT), BP 12404 Niamey, NigerBiological nitrogen fixation (BNF) by legumes is an indicator of their potential contribution to recycling nitrogen in cropping systems. Many techniques exist for the quantitative measurement of legume BNF. The isotopic dilution (ID) methods are the most accurate but are too expensive, time-consuming and require technical expertise. There is a gap between the simple but less accurate Total Nitrogen Difference (TND) method and the Isotopic Dilution (ID) methods. By measuring the BNF of 11 cowpea (Vigna unguiculata) genotypes, this study aimed to develop a simple model as an improved tool for the quick estimation of BNF. Total N accumulated by traditional genotypes from Burkina Faso varied from 23 to 41 kg ha−1. Approximately 40 to 65% of this was nitrogen derived from the atmosphere (Ndfa) when the TND method was used (Ndfa-TND), while the ID method indicated that 29 to 37% of N accumulated was derived from the atmosphere (Ndfa-ID). The TND method overestimated the BNF of high N-yielding genotypes but underestimated the BNF of low N-yielding genotypes (N-accumulated below 31 kg N ha−1). The relationship between N-accumulated and Ndfa-ID was described by a polynomial regression: Yi = 0.0127 Xi2 - 0.5354 Xi + 17.44, where Yi and Xi represent Ndfa-ID and N-accumulated, respectively (P<0.05, R2 =0.92). The model was validated and could be used for quick estimation of BNF directly from the N accumulated.http://dx.doi.org/10.1155/2018/9641923
collection DOAJ
language English
format Article
sources DOAJ
author Boubié Vincent Bado
Michel Sedogo
François Lompo
Sanoussi Manzo Maman Laminou
spellingShingle Boubié Vincent Bado
Michel Sedogo
François Lompo
Sanoussi Manzo Maman Laminou
Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation
Advances in Agriculture
author_facet Boubié Vincent Bado
Michel Sedogo
François Lompo
Sanoussi Manzo Maman Laminou
author_sort Boubié Vincent Bado
title Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation
title_short Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation
title_full Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation
title_fullStr Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation
title_full_unstemmed Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation
title_sort biological nitrogen fixation by local and improved genotypes of cowpea in burkina faso (west africa): total nitrogen accumulated can be used for quick estimation
publisher Hindawi Limited
series Advances in Agriculture
issn 2356-654X
2314-7539
publishDate 2018-01-01
description Biological nitrogen fixation (BNF) by legumes is an indicator of their potential contribution to recycling nitrogen in cropping systems. Many techniques exist for the quantitative measurement of legume BNF. The isotopic dilution (ID) methods are the most accurate but are too expensive, time-consuming and require technical expertise. There is a gap between the simple but less accurate Total Nitrogen Difference (TND) method and the Isotopic Dilution (ID) methods. By measuring the BNF of 11 cowpea (Vigna unguiculata) genotypes, this study aimed to develop a simple model as an improved tool for the quick estimation of BNF. Total N accumulated by traditional genotypes from Burkina Faso varied from 23 to 41 kg ha−1. Approximately 40 to 65% of this was nitrogen derived from the atmosphere (Ndfa) when the TND method was used (Ndfa-TND), while the ID method indicated that 29 to 37% of N accumulated was derived from the atmosphere (Ndfa-ID). The TND method overestimated the BNF of high N-yielding genotypes but underestimated the BNF of low N-yielding genotypes (N-accumulated below 31 kg N ha−1). The relationship between N-accumulated and Ndfa-ID was described by a polynomial regression: Yi = 0.0127 Xi2 - 0.5354 Xi + 17.44, where Yi and Xi represent Ndfa-ID and N-accumulated, respectively (P<0.05, R2 =0.92). The model was validated and could be used for quick estimation of BNF directly from the N accumulated.
url http://dx.doi.org/10.1155/2018/9641923
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