Table 3.
Origin of cowpea isolates used in this study, and soil chemical properties of the sampling sites.
| Country | Region/Province | Location | Latitude | Longitude | pH (H2O) | B | C | Ca | Fe | K | Mg | Mn | Na | P | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| — | (mg.kg−1) | (%) | cmol(+).kg− | mg.kg−1 | (mg.kg−1) | cmol(+).kg−1 | (mg.kg−1) | (mg.kg−1) | (mg.kg−1) | (%) | |||||
| Ghana | Northern | NyankpalaG | 9.389 | −1.006 | 5.9 | 0.27 | 0.40 | 1.06 | 59.15 | 68 | 0.39 | 79.22 | 8 | 6 | 0.023 |
| DamongoG | 9.043 | −1.814 | 4.3 | 0.23 | 0.31 | 1.13 | 53.73 | 90 | 0.49 | 54.96 | 7 | 10 | 0.04 | ||
| Upper East | GaruF | 10.929 | −0.125 | 5.3 | 0.25 | 0.55 | 1.74 | 40.32 | 38 | 0.46 | 39.09 | 9 | 5 | 0.048 | |
| South Africa | Mpumalanga | KlipplaatdriftF (Middleveld region) | −25.233 | 29.033 | 6.0 | 0.23 | 0.30 | 3.03 | 36.80 | 135 | 1.19 | 56.14 | 11 | 56 | 0.29 |
| NelspruitG (Lowveld region) | −25.474 | 30.970 | 4.9 | 0.09 | 0.26 | 0.74 | 38.16 | 43 | 0.38 | 39.90 | 12 | 32 | 0.029 |
Note: FRhizobia trapped by direct planting of Kersting’s bean in the fields, GRhizobia trapped in the glasshouse from sampled field soils.