Table 7.
Soybean yield in 2017 and 2018 at two field sites, Beltsville [Central Maryland (CM)] and Keedysville [Western Maryland (WM)], across three post-harvest treatments following corn harvest. For the three treatments, CC denotes cover crop planted in corn residue/stubble; CP represents plots that were chisel plowed (conventional tillage); and CS (corn stubble) no action.
| Treatment | 2017 | 2017 | 2018 | 2018 |
|---|---|---|---|---|
| CM | WM | CM | WM | |
| Mean ± SE (kg/ha) |
Mean ± SE (kg/ha) |
Mean ± SE (kg/ha) |
Mean ± SE (kg/ha) |
|
| CC | 5345.0 ± 222.9 a | 3161.0 ± 667.7 a | 4626.7 ± 167.1 a | 4613.8 ± 174.1 a |
| CP | 5603.2 ± 194.9 a | 5299.2 ± 136.5 b | 4277.9 ± 265.8 a | 4343.2 ± 54.7 a |
| CS | 5440.4 ± 524.0 a | 5283.8 ± 262.7 b | 4254.7 ± 158.3 a | 4260.2 ± 65.9 a |
Means ± SE that share the same letter(s) are not different among treatments at α = 0.05, based on multiple means comparisons (by computing estimated marginal means).