| Soil property | Harvest frequency | Alamo | Cave-in-Rock | ||
| PL† | CF† | PL | CF | ||
| Cu (kg∙ha−1) | 1 | 2.0 a* | 1.5 b | 1.9 a | 1.5 b |
| 2 | 1.6 b | 1.4 b | 2.0 a | 1.4 b | |
| Fe (kg∙ha−1) | 1 | 212.5 a* | 184.2 b | 193.3 ab | 189.5 b |
| 2 | 195.5 ab | 188.8 b | 192.6 ab | 160.9 c | |