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

<div>Relationships between total N yields of cowpea genotypes and N derived from the atmosphere as affected by the isotopic dilution (Ndfa-ID) and total N difference (Ndfa-TND) methods.</div>

Advances in Agriculture

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Figure 3

Figure 3: Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation 

Figure 3 | Biological Nitrogen Fixation by Local and Improved Genotypes of Cowpea in Burkina Faso (West Africa): Total Nitrogen Accumulated can be used for Quick Estimation 