Table 2. Statistical summary of growth yield and related traits, grain-Fe concentration and economics of mungbean grown under varying iron levels and application methods.
| Crop variables | Iron levels (Fe) | Iron application methods (M) | Fe × M |
|---|---|---|---|
| Number of roots/plant | * | NS | NS |
| Chlorophyll density (SPAD value) | NS | ** | NS |
| Leaf area index | ** | ** | ** |
| Crop growth rate (g m-2 day-1) | ** | ** | ** |
| Number of monopodial branches/plant | ** | ** | ** |
| Number of sympodial branches/plant | ** | NS | ** |
| Number of grains per pod | ** | ** | ** |
| 1000-grain weight (g) | ** | ** | ** |
| Grain yield (t ha-1) | ** | ** | ** |
| Biological yield (t ha-1) | ** | ** | ** |
| Gross income (US$ ha-1) | ** | ** | ** |
| Net income (US$ ha-1) | ** | ** | ** |
| Benefit: cost ratio | ** | ** | ** |
* = Significant at p 0.05
** = Significant at p 0.01; NS = Non-significant