Table 6.
Potential N fixation through symbiotic associations of rhizobia and legume crops under conducive environments Adapted from FAO (1984)
| Legume crop (scientific name) | N fixedA (kg ha–1 year–1) |
|---|---|
| Bean (Phaseolus vulgaris) | 40–70 |
| Pea (Pisum sativum) | 52–77 |
| Lentil (Lens esculentum) | 88–114 |
| Groundnut (Arachis hypogaea) | 72–124 |
| Soybean (Glycine max) | 60–168 |
| Stylo (Stylosanthes spp.) | 34–220 |
| Pigeon pea (Cajanus cajan) | 168–280 |
| Alfalfa (Medicago sativa) | 229–290 |
| Mung bean (Vigna mungo) | 63–342 |
| Cowpea (Vigna unguiculata) | 73–354 |
| Centro (Centrosema pubescens) | 126–398 |
| Calapo (Calapogonium mucunoides) | 370–450 |
| Horse bean (Vicia faba) | 45–552 |
| Leucaena (Leucaena leucocephala) | 74–584 |
AThe values represent the range based on the legume genotype, rhizobium strain, environmental conditions, and legume crop management practices.