Table 4.
%Ndfa, total N2 fixed, biomass yields and grain yields for different soybean varieties and input levels and in different regions. Data in brackets represent standard deviations from the mean.
| Treatment | n | Ndfab (%) | Total N2 fixed (kg ha−1) | Biomass yieldc (t ha−1) | Grain yield (t ha−1) |
|---|---|---|---|---|---|
| Local variety inoculated | 27 | 65.0 (12.4) | 75.7 (57.3) | 3.10 (1.88) | 1.14 (0.71) |
| Nasoko no inputs | 20 | 56.7 (20.2) | 45.0 (43.8) | 2.27 (1.54) | 1.02 (0.65) |
| Nasoko inoculated (I) | 51 | 53.0 (17.6) | 57.8 (50.0) | 2.48 (1.71) | 1.08 (0.75) |
| Nasoko, I and fertiliser | 24 | 54.3 (14.5) | 76.7 (46.9) | 3.48 (1.54) | 1.68 (0.79) |
| SEDa Treatment | 4.47* | 12.01* | 0.41* | 0.18** | |
| Region | |||||
| Dowa | 45 | 57.1 (16.9) | 88.9 (60.9) | 3.70 (1.96) | 1.47 (0.73) |
| Mchinji | 41 | 57.7 (14.3) | 49.9 (36.7) | 2.52 (1.42) | 1.14 (0.61) |
| Salima | 36 | 54.3 (19.9) | 47.1 (37.9) | 2.04 (1.27) | 0.99 (0.86) |
| SED Region | 3.79 | 10.71*** | 0.32*** | 0.15** | |
| Total/Mean | 122 | 56.5 (17.0) | 63.3 (50.9) | 2.76 (1.72) | 1.20 (0.76) |
a
SED = Standard error of difference between means, * p < 0.05, ** p < 0.01, *** p < 0.001.
b
Nitrogen derived from the atmosphere.
c
Above-ground biomass dry weight at R5.5 growth stage.